/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 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 20:38:35,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 20:38:35,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 20:38:35,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 20:38:35,365 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 [2021-03-10 20:38:35,392 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 20:38:35,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 20:38:35,393 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 20:38:35,393 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 20:38:35,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 20:38:35,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 20:38:35,396 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 20:38:35,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 20:38:35,396 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 20:38:35,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 20:38:35,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 20:38:35,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 20:38:35,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 20:38:35,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 20:38:35,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 20:38:35,397 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 20:38:35,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 20:38:35,397 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 20:38:35,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 20:38:35,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 20:38:35,397 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 20:38:35,397 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 20:38:35,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 20:38:35,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 20:38:35,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 20:38:35,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 20:38:35,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 20:38:35,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 20:38:35,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 20:38:35,398 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 20:38:35,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 20:38:35,398 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 20:38:35,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 20:38:35,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 20:38:35,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 20:38:35,632 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-10 20:38:35,633 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-10 20:38:35,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/sum_invariant.bpl [2021-03-10 20:38:35,633 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/sum_invariant.bpl' [2021-03-10 20:38:35,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 20:38:35,744 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-10 20:38:35,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 20:38:35,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 20:38:35,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 20:38:35,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 08:38:35" (1/1) ... [2021-03-10 20:38:35,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 08:38:35" (1/1) ... [2021-03-10 20:38:35,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 20:38:35,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 20:38:35,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 20:38:35,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 20:38:35,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 08:38:35" (1/1) ... [2021-03-10 20:38:35,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 08:38:35" (1/1) ... [2021-03-10 20:38:35,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 08:38:35" (1/1) ... [2021-03-10 20:38:35,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 08:38:35" (1/1) ... [2021-03-10 20:38:35,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 08:38:35" (1/1) ... [2021-03-10 20:38:35,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 08:38:35" (1/1) ... [2021-03-10 20:38:35,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 08:38:35" (1/1) ... [2021-03-10 20:38:35,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 20:38:35,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 20:38:35,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 20:38:35,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 20:38:35,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 08:38:35" (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 [2021-03-10 20:38:35,819 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-10 20:38:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 20:38:35,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 20:38:35,820 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-03-10 20:38:35,820 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-03-10 20:38:35,820 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-03-10 20:38:35,820 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 20:38:35,898 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 20:38:35,898 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-10 20:38:35,899 INFO L202 PluginConnector]: Adding new model sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 08:38:35 BoogieIcfgContainer [2021-03-10 20:38:35,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 20:38:35,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 20:38:35,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 20:38:35,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 20:38:35,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 08:38:35" (1/2) ... [2021-03-10 20:38:35,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4b8216 and model type sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 08:38:35, skipping insertion in model container [2021-03-10 20:38:35,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 08:38:35" (2/2) ... [2021-03-10 20:38:35,914 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_invariant.bpl [2021-03-10 20:38:35,920 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 20:38:35,920 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 20:38:35,923 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 20:38:35,923 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 20:38:35,940 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,940 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,940 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,941 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,941 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,941 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,941 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,941 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,941 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,942 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,942 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,942 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,942 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,942 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,942 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,943 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,943 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,943 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,943 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,943 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,943 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,944 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,944 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,944 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,945 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,947 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,948 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,949 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:38:35,962 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-03-10 20:38:35,972 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-10 20:38:35,984 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 20:38:35,984 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 20:38:35,984 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 20:38:35,984 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 20:38:35,985 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 20:38:35,985 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 20:38:35,985 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 20:38:35,985 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 20:38:35,991 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 44 transitions, 156 flow [2021-03-10 20:38:36,115 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) [2021-03-10 20:38:36,118 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) [2021-03-10 20:38:36,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:36,131 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:36,131 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:36,132 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:36,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:36,135 INFO L82 PathProgramCache]: Analyzing trace with hash 376061866, now seen corresponding path program 1 times [2021-03-10 20:38:36,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:36,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680525965] [2021-03-10 20:38:36,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:36,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:36,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680525965] [2021-03-10 20:38:36,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:36,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-10 20:38:36,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453304724] [2021-03-10 20:38:36,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 20:38:36,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:36,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 20:38:36,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 20:38:36,269 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) [2021-03-10 20:38:36,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:36,308 INFO L93 Difference]: Finished difference Result 1331 states and 4324 transitions. [2021-03-10 20:38:36,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 20:38:36,310 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 [2021-03-10 20:38:36,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:36,332 INFO L225 Difference]: With dead ends: 1331 [2021-03-10 20:38:36,332 INFO L226 Difference]: Without dead ends: 1329 [2021-03-10 20:38:36,333 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 20:38:36,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-03-10 20:38:36,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1329. [2021-03-10 20:38:36,422 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) [2021-03-10 20:38:36,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 4322 transitions. [2021-03-10 20:38:36,427 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 4322 transitions. Word has length 26 [2021-03-10 20:38:36,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:36,427 INFO L480 AbstractCegarLoop]: Abstraction has 1329 states and 4322 transitions. [2021-03-10 20:38:36,427 INFO L481 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) [2021-03-10 20:38:36,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 4322 transitions. [2021-03-10 20:38:36,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:36,431 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:36,431 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:36,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 20:38:36,432 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:36,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:36,434 INFO L82 PathProgramCache]: Analyzing trace with hash 2093674476, now seen corresponding path program 1 times [2021-03-10 20:38:36,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:36,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443000951] [2021-03-10 20:38:36,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:36,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443000951] [2021-03-10 20:38:36,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:36,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-10 20:38:36,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874263093] [2021-03-10 20:38:36,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 20:38:36,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:36,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 20:38:36,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 20:38:36,490 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) [2021-03-10 20:38:36,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:36,505 INFO L93 Difference]: Finished difference Result 1114 states and 3592 transitions. [2021-03-10 20:38:36,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 20:38:36,505 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 [2021-03-10 20:38:36,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:36,511 INFO L225 Difference]: With dead ends: 1114 [2021-03-10 20:38:36,511 INFO L226 Difference]: Without dead ends: 1114 [2021-03-10 20:38:36,512 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 20:38:36,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2021-03-10 20:38:36,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1114. [2021-03-10 20:38:36,536 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) [2021-03-10 20:38:36,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 3592 transitions. [2021-03-10 20:38:36,540 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 3592 transitions. Word has length 26 [2021-03-10 20:38:36,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:36,540 INFO L480 AbstractCegarLoop]: Abstraction has 1114 states and 3592 transitions. [2021-03-10 20:38:36,540 INFO L481 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) [2021-03-10 20:38:36,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 3592 transitions. [2021-03-10 20:38:36,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:36,543 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:36,544 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:36,544 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 20:38:36,544 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:36,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:36,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1885399720, now seen corresponding path program 1 times [2021-03-10 20:38:36,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:36,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704687727] [2021-03-10 20:38:36,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:36,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704687727] [2021-03-10 20:38:36,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:36,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 20:38:36,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049261472] [2021-03-10 20:38:36,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 20:38:36,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:36,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 20:38:36,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 20:38:36,675 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) [2021-03-10 20:38:36,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:36,824 INFO L93 Difference]: Finished difference Result 1876 states and 5924 transitions. [2021-03-10 20:38:36,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 20:38:36,824 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 [2021-03-10 20:38:36,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:36,831 INFO L225 Difference]: With dead ends: 1876 [2021-03-10 20:38:36,831 INFO L226 Difference]: Without dead ends: 1614 [2021-03-10 20:38:36,831 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.9ms TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 20:38:36,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2021-03-10 20:38:36,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1614. [2021-03-10 20:38:36,859 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) [2021-03-10 20:38:36,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 5058 transitions. [2021-03-10 20:38:36,864 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 5058 transitions. Word has length 26 [2021-03-10 20:38:36,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:36,865 INFO L480 AbstractCegarLoop]: Abstraction has 1614 states and 5058 transitions. [2021-03-10 20:38:36,865 INFO L481 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) [2021-03-10 20:38:36,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 5058 transitions. [2021-03-10 20:38:36,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:36,869 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:36,869 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:36,869 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 20:38:36,869 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:36,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:36,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1549982582, now seen corresponding path program 2 times [2021-03-10 20:38:36,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:36,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068687034] [2021-03-10 20:38:36,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:36,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:36,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068687034] [2021-03-10 20:38:36,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:36,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 20:38:36,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19701993] [2021-03-10 20:38:36,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 20:38:36,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:36,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 20:38:36,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-10 20:38:36,946 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) [2021-03-10 20:38:37,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:37,068 INFO L93 Difference]: Finished difference Result 1887 states and 5832 transitions. [2021-03-10 20:38:37,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 20:38:37,069 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 [2021-03-10 20:38:37,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:37,075 INFO L225 Difference]: With dead ends: 1887 [2021-03-10 20:38:37,075 INFO L226 Difference]: Without dead ends: 1628 [2021-03-10 20:38:37,075 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.5ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-10 20:38:37,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2021-03-10 20:38:37,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1508. [2021-03-10 20:38:37,097 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) [2021-03-10 20:38:37,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 4726 transitions. [2021-03-10 20:38:37,101 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 4726 transitions. Word has length 26 [2021-03-10 20:38:37,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:37,101 INFO L480 AbstractCegarLoop]: Abstraction has 1508 states and 4726 transitions. [2021-03-10 20:38:37,101 INFO L481 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) [2021-03-10 20:38:37,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 4726 transitions. [2021-03-10 20:38:37,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:37,104 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:37,104 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:37,104 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 20:38:37,104 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:37,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:37,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1650467594, now seen corresponding path program 3 times [2021-03-10 20:38:37,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:37,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015880226] [2021-03-10 20:38:37,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:37,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:37,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015880226] [2021-03-10 20:38:37,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:37,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 20:38:37,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912532227] [2021-03-10 20:38:37,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 20:38:37,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:37,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 20:38:37,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-10 20:38:37,169 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) [2021-03-10 20:38:37,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:37,272 INFO L93 Difference]: Finished difference Result 1901 states and 5814 transitions. [2021-03-10 20:38:37,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 20:38:37,273 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 [2021-03-10 20:38:37,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:37,279 INFO L225 Difference]: With dead ends: 1901 [2021-03-10 20:38:37,279 INFO L226 Difference]: Without dead ends: 1646 [2021-03-10 20:38:37,279 INFO L775 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 [2021-03-10 20:38:37,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2021-03-10 20:38:37,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1458. [2021-03-10 20:38:37,302 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) [2021-03-10 20:38:37,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 4554 transitions. [2021-03-10 20:38:37,306 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 4554 transitions. Word has length 26 [2021-03-10 20:38:37,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:37,307 INFO L480 AbstractCegarLoop]: Abstraction has 1458 states and 4554 transitions. [2021-03-10 20:38:37,307 INFO L481 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) [2021-03-10 20:38:37,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 4554 transitions. [2021-03-10 20:38:37,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:37,309 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:37,309 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:37,310 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 20:38:37,310 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:37,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:37,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1784914708, now seen corresponding path program 4 times [2021-03-10 20:38:37,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:37,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082419511] [2021-03-10 20:38:37,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:37,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:37,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082419511] [2021-03-10 20:38:37,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:37,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:37,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575094757] [2021-03-10 20:38:37,382 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:37,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:37,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:37,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:37,383 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) [2021-03-10 20:38:37,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:37,519 INFO L93 Difference]: Finished difference Result 1678 states and 5178 transitions. [2021-03-10 20:38:37,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:37,520 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 [2021-03-10 20:38:37,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:37,525 INFO L225 Difference]: With dead ends: 1678 [2021-03-10 20:38:37,525 INFO L226 Difference]: Without dead ends: 1484 [2021-03-10 20:38:37,525 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:37,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2021-03-10 20:38:37,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1406. [2021-03-10 20:38:37,547 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) [2021-03-10 20:38:37,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4398 transitions. [2021-03-10 20:38:37,551 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4398 transitions. Word has length 26 [2021-03-10 20:38:37,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:37,551 INFO L480 AbstractCegarLoop]: Abstraction has 1406 states and 4398 transitions. [2021-03-10 20:38:37,551 INFO L481 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) [2021-03-10 20:38:37,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4398 transitions. [2021-03-10 20:38:37,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:37,553 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:37,553 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:37,553 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 20:38:37,553 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:37,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:37,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1096030702, now seen corresponding path program 5 times [2021-03-10 20:38:37,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:37,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564793103] [2021-03-10 20:38:37,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:37,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:37,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564793103] [2021-03-10 20:38:37,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:37,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 20:38:37,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408056621] [2021-03-10 20:38:37,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 20:38:37,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:37,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 20:38:37,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-10 20:38:37,615 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) [2021-03-10 20:38:37,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:37,738 INFO L93 Difference]: Finished difference Result 1788 states and 5480 transitions. [2021-03-10 20:38:37,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 20:38:37,739 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 [2021-03-10 20:38:37,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:37,746 INFO L225 Difference]: With dead ends: 1788 [2021-03-10 20:38:37,746 INFO L226 Difference]: Without dead ends: 1647 [2021-03-10 20:38:37,746 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.0ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-10 20:38:37,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2021-03-10 20:38:37,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1463. [2021-03-10 20:38:37,787 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) [2021-03-10 20:38:37,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 4576 transitions. [2021-03-10 20:38:37,791 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 4576 transitions. Word has length 26 [2021-03-10 20:38:37,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:37,791 INFO L480 AbstractCegarLoop]: Abstraction has 1463 states and 4576 transitions. [2021-03-10 20:38:37,791 INFO L481 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) [2021-03-10 20:38:37,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 4576 transitions. [2021-03-10 20:38:37,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:37,793 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:37,793 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:37,794 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 20:38:37,794 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:37,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:37,794 INFO L82 PathProgramCache]: Analyzing trace with hash 662642804, now seen corresponding path program 6 times [2021-03-10 20:38:37,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:37,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805409714] [2021-03-10 20:38:37,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:37,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:37,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805409714] [2021-03-10 20:38:37,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:37,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:37,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37871215] [2021-03-10 20:38:37,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:37,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:37,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:37,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:37,879 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) [2021-03-10 20:38:38,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:38,014 INFO L93 Difference]: Finished difference Result 1778 states and 5460 transitions. [2021-03-10 20:38:38,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:38,015 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 [2021-03-10 20:38:38,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:38,020 INFO L225 Difference]: With dead ends: 1778 [2021-03-10 20:38:38,020 INFO L226 Difference]: Without dead ends: 1649 [2021-03-10 20:38:38,021 INFO L775 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 [2021-03-10 20:38:38,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2021-03-10 20:38:38,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1488. [2021-03-10 20:38:38,053 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) [2021-03-10 20:38:38,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 4654 transitions. [2021-03-10 20:38:38,057 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 4654 transitions. Word has length 26 [2021-03-10 20:38:38,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:38,058 INFO L480 AbstractCegarLoop]: Abstraction has 1488 states and 4654 transitions. [2021-03-10 20:38:38,058 INFO L481 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) [2021-03-10 20:38:38,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 4654 transitions. [2021-03-10 20:38:38,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:38,061 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:38,061 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:38,061 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-10 20:38:38,061 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:38,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:38,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1532087412, now seen corresponding path program 7 times [2021-03-10 20:38:38,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:38,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982871649] [2021-03-10 20:38:38,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:38,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:38,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982871649] [2021-03-10 20:38:38,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:38,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:38,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867116254] [2021-03-10 20:38:38,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:38,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:38,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:38,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:38,165 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) [2021-03-10 20:38:38,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:38,312 INFO L93 Difference]: Finished difference Result 1806 states and 5565 transitions. [2021-03-10 20:38:38,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:38,312 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 [2021-03-10 20:38:38,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:38,318 INFO L225 Difference]: With dead ends: 1806 [2021-03-10 20:38:38,318 INFO L226 Difference]: Without dead ends: 1647 [2021-03-10 20:38:38,318 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:38,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2021-03-10 20:38:38,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1509. [2021-03-10 20:38:38,345 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) [2021-03-10 20:38:38,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 4715 transitions. [2021-03-10 20:38:38,349 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 4715 transitions. Word has length 26 [2021-03-10 20:38:38,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:38,349 INFO L480 AbstractCegarLoop]: Abstraction has 1509 states and 4715 transitions. [2021-03-10 20:38:38,349 INFO L481 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) [2021-03-10 20:38:38,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 4715 transitions. [2021-03-10 20:38:38,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:38,353 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:38,353 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:38,353 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-10 20:38:38,353 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:38,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:38,353 INFO L82 PathProgramCache]: Analyzing trace with hash 63376182, now seen corresponding path program 8 times [2021-03-10 20:38:38,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:38,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618855389] [2021-03-10 20:38:38,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:38,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:38,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618855389] [2021-03-10 20:38:38,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:38,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:38,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597791961] [2021-03-10 20:38:38,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:38,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:38,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:38,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:38,436 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) [2021-03-10 20:38:38,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:38,586 INFO L93 Difference]: Finished difference Result 1852 states and 5672 transitions. [2021-03-10 20:38:38,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:38,587 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 [2021-03-10 20:38:38,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:38,593 INFO L225 Difference]: With dead ends: 1852 [2021-03-10 20:38:38,593 INFO L226 Difference]: Without dead ends: 1713 [2021-03-10 20:38:38,594 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:38,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2021-03-10 20:38:38,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1499. [2021-03-10 20:38:38,616 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) [2021-03-10 20:38:38,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 4685 transitions. [2021-03-10 20:38:38,619 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 4685 transitions. Word has length 26 [2021-03-10 20:38:38,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:38,619 INFO L480 AbstractCegarLoop]: Abstraction has 1499 states and 4685 transitions. [2021-03-10 20:38:38,619 INFO L481 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) [2021-03-10 20:38:38,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 4685 transitions. [2021-03-10 20:38:38,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:38,622 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:38,622 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:38,622 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-10 20:38:38,622 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:38,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:38,622 INFO L82 PathProgramCache]: Analyzing trace with hash 53973816, now seen corresponding path program 9 times [2021-03-10 20:38:38,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:38,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789119154] [2021-03-10 20:38:38,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:38,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:38,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789119154] [2021-03-10 20:38:38,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:38,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 20:38:38,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657157462] [2021-03-10 20:38:38,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 20:38:38,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:38,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 20:38:38,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-10 20:38:38,672 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) [2021-03-10 20:38:38,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:38,774 INFO L93 Difference]: Finished difference Result 1849 states and 5664 transitions. [2021-03-10 20:38:38,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 20:38:38,774 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 [2021-03-10 20:38:38,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:38,787 INFO L225 Difference]: With dead ends: 1849 [2021-03-10 20:38:38,788 INFO L226 Difference]: Without dead ends: 1708 [2021-03-10 20:38:38,788 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.1ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-10 20:38:38,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2021-03-10 20:38:38,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1525. [2021-03-10 20:38:38,816 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) [2021-03-10 20:38:38,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 4765 transitions. [2021-03-10 20:38:38,819 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 4765 transitions. Word has length 26 [2021-03-10 20:38:38,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:38,819 INFO L480 AbstractCegarLoop]: Abstraction has 1525 states and 4765 transitions. [2021-03-10 20:38:38,819 INFO L481 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) [2021-03-10 20:38:38,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 4765 transitions. [2021-03-10 20:38:38,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:38,822 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:38,822 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:38,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-10 20:38:38,822 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:38,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:38,822 INFO L82 PathProgramCache]: Analyzing trace with hash 923418424, now seen corresponding path program 10 times [2021-03-10 20:38:38,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:38,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965697613] [2021-03-10 20:38:38,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:38,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:38,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965697613] [2021-03-10 20:38:38,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:38,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:38,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805272915] [2021-03-10 20:38:38,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:38,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:38,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:38,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:38,889 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) [2021-03-10 20:38:39,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:39,027 INFO L93 Difference]: Finished difference Result 1932 states and 5906 transitions. [2021-03-10 20:38:39,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:39,028 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 [2021-03-10 20:38:39,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:39,031 INFO L225 Difference]: With dead ends: 1932 [2021-03-10 20:38:39,031 INFO L226 Difference]: Without dead ends: 1665 [2021-03-10 20:38:39,031 INFO L775 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 [2021-03-10 20:38:39,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2021-03-10 20:38:39,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1415. [2021-03-10 20:38:39,051 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) [2021-03-10 20:38:39,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 4371 transitions. [2021-03-10 20:38:39,054 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 4371 transitions. Word has length 26 [2021-03-10 20:38:39,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:39,054 INFO L480 AbstractCegarLoop]: Abstraction has 1415 states and 4371 transitions. [2021-03-10 20:38:39,054 INFO L481 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) [2021-03-10 20:38:39,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 4371 transitions. [2021-03-10 20:38:39,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:39,056 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:39,056 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:39,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-10 20:38:39,057 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:39,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:39,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1663766954, now seen corresponding path program 11 times [2021-03-10 20:38:39,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:39,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633934375] [2021-03-10 20:38:39,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:39,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:39,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633934375] [2021-03-10 20:38:39,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:39,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:39,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308612398] [2021-03-10 20:38:39,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:39,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:39,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:39,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:39,114 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) [2021-03-10 20:38:39,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:39,262 INFO L93 Difference]: Finished difference Result 1661 states and 5048 transitions. [2021-03-10 20:38:39,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:39,262 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 [2021-03-10 20:38:39,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:39,265 INFO L225 Difference]: With dead ends: 1661 [2021-03-10 20:38:39,265 INFO L226 Difference]: Without dead ends: 1528 [2021-03-10 20:38:39,265 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:39,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-03-10 20:38:39,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1405. [2021-03-10 20:38:39,286 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) [2021-03-10 20:38:39,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 4334 transitions. [2021-03-10 20:38:39,289 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 4334 transitions. Word has length 26 [2021-03-10 20:38:39,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:39,289 INFO L480 AbstractCegarLoop]: Abstraction has 1405 states and 4334 transitions. [2021-03-10 20:38:39,289 INFO L481 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) [2021-03-10 20:38:39,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 4334 transitions. [2021-03-10 20:38:39,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:39,291 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:39,291 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:39,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-10 20:38:39,291 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:39,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:39,292 INFO L82 PathProgramCache]: Analyzing trace with hash -794322346, now seen corresponding path program 12 times [2021-03-10 20:38:39,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:39,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081831559] [2021-03-10 20:38:39,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:39,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:39,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081831559] [2021-03-10 20:38:39,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:39,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:39,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633672009] [2021-03-10 20:38:39,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:39,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:39,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:39,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:39,348 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) [2021-03-10 20:38:39,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:39,488 INFO L93 Difference]: Finished difference Result 1871 states and 5674 transitions. [2021-03-10 20:38:39,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:39,488 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 [2021-03-10 20:38:39,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:39,494 INFO L225 Difference]: With dead ends: 1871 [2021-03-10 20:38:39,494 INFO L226 Difference]: Without dead ends: 1726 [2021-03-10 20:38:39,494 INFO L775 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 [2021-03-10 20:38:39,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-03-10 20:38:39,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1433. [2021-03-10 20:38:39,524 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) [2021-03-10 20:38:39,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 4419 transitions. [2021-03-10 20:38:39,527 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 4419 transitions. Word has length 26 [2021-03-10 20:38:39,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:39,527 INFO L480 AbstractCegarLoop]: Abstraction has 1433 states and 4419 transitions. [2021-03-10 20:38:39,527 INFO L481 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) [2021-03-10 20:38:39,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 4419 transitions. [2021-03-10 20:38:39,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:39,529 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:39,529 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:39,529 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-10 20:38:39,529 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:39,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:39,529 INFO L82 PathProgramCache]: Analyzing trace with hash 2045087292, now seen corresponding path program 13 times [2021-03-10 20:38:39,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:39,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141583674] [2021-03-10 20:38:39,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:39,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:39,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141583674] [2021-03-10 20:38:39,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:39,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:39,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127447441] [2021-03-10 20:38:39,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:39,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:39,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:39,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:39,584 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) [2021-03-10 20:38:39,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:39,713 INFO L93 Difference]: Finished difference Result 1746 states and 5285 transitions. [2021-03-10 20:38:39,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:39,713 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 [2021-03-10 20:38:39,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:39,716 INFO L225 Difference]: With dead ends: 1746 [2021-03-10 20:38:39,716 INFO L226 Difference]: Without dead ends: 1561 [2021-03-10 20:38:39,716 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:39,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2021-03-10 20:38:39,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1389. [2021-03-10 20:38:39,736 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) [2021-03-10 20:38:39,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 4285 transitions. [2021-03-10 20:38:39,738 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 4285 transitions. Word has length 26 [2021-03-10 20:38:39,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:39,738 INFO L480 AbstractCegarLoop]: Abstraction has 1389 states and 4285 transitions. [2021-03-10 20:38:39,738 INFO L481 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) [2021-03-10 20:38:39,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 4285 transitions. [2021-03-10 20:38:39,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:39,740 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:39,740 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:39,740 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-10 20:38:39,740 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:39,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:39,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1140197304, now seen corresponding path program 14 times [2021-03-10 20:38:39,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:39,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313320966] [2021-03-10 20:38:39,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:39,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:39,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313320966] [2021-03-10 20:38:39,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:39,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:39,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245485504] [2021-03-10 20:38:39,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:39,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:39,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:39,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:39,792 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) [2021-03-10 20:38:39,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:39,951 INFO L93 Difference]: Finished difference Result 1686 states and 5109 transitions. [2021-03-10 20:38:39,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:39,951 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 [2021-03-10 20:38:39,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:39,954 INFO L225 Difference]: With dead ends: 1686 [2021-03-10 20:38:39,954 INFO L226 Difference]: Without dead ends: 1511 [2021-03-10 20:38:39,954 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:39,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2021-03-10 20:38:39,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1339. [2021-03-10 20:38:39,972 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) [2021-03-10 20:38:39,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 4135 transitions. [2021-03-10 20:38:39,975 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 4135 transitions. Word has length 26 [2021-03-10 20:38:39,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:39,975 INFO L480 AbstractCegarLoop]: Abstraction has 1339 states and 4135 transitions. [2021-03-10 20:38:39,975 INFO L481 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) [2021-03-10 20:38:39,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 4135 transitions. [2021-03-10 20:38:39,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:39,977 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:39,977 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:39,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-10 20:38:39,977 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:39,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:39,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1396096486, now seen corresponding path program 15 times [2021-03-10 20:38:39,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:39,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217983204] [2021-03-10 20:38:39,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:40,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:40,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217983204] [2021-03-10 20:38:40,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:40,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:40,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238096661] [2021-03-10 20:38:40,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:40,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:40,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:40,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:40,033 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) [2021-03-10 20:38:40,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:40,162 INFO L93 Difference]: Finished difference Result 1627 states and 4941 transitions. [2021-03-10 20:38:40,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:40,162 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 [2021-03-10 20:38:40,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:40,164 INFO L225 Difference]: With dead ends: 1627 [2021-03-10 20:38:40,164 INFO L226 Difference]: Without dead ends: 1462 [2021-03-10 20:38:40,165 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:40,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2021-03-10 20:38:40,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1322. [2021-03-10 20:38:40,182 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) [2021-03-10 20:38:40,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 4086 transitions. [2021-03-10 20:38:40,185 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 4086 transitions. Word has length 26 [2021-03-10 20:38:40,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:40,185 INFO L480 AbstractCegarLoop]: Abstraction has 1322 states and 4086 transitions. [2021-03-10 20:38:40,185 INFO L481 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) [2021-03-10 20:38:40,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 4086 transitions. [2021-03-10 20:38:40,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:40,186 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:40,187 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:40,187 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-10 20:38:40,187 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:40,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:40,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1995363108, now seen corresponding path program 16 times [2021-03-10 20:38:40,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:40,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290876671] [2021-03-10 20:38:40,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:40,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:40,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290876671] [2021-03-10 20:38:40,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:40,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:40,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005324867] [2021-03-10 20:38:40,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:40,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:40,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:40,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:40,234 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) [2021-03-10 20:38:40,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:40,354 INFO L93 Difference]: Finished difference Result 1728 states and 5256 transitions. [2021-03-10 20:38:40,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:40,354 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 [2021-03-10 20:38:40,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:40,357 INFO L225 Difference]: With dead ends: 1728 [2021-03-10 20:38:40,357 INFO L226 Difference]: Without dead ends: 1573 [2021-03-10 20:38:40,357 INFO L775 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 [2021-03-10 20:38:40,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-03-10 20:38:40,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1301. [2021-03-10 20:38:40,375 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) [2021-03-10 20:38:40,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 4021 transitions. [2021-03-10 20:38:40,377 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 4021 transitions. Word has length 26 [2021-03-10 20:38:40,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:40,377 INFO L480 AbstractCegarLoop]: Abstraction has 1301 states and 4021 transitions. [2021-03-10 20:38:40,377 INFO L481 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) [2021-03-10 20:38:40,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 4021 transitions. [2021-03-10 20:38:40,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:40,379 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:40,379 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:40,379 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-10 20:38:40,379 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:40,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:40,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1729596350, now seen corresponding path program 17 times [2021-03-10 20:38:40,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:40,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065444852] [2021-03-10 20:38:40,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:40,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:40,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065444852] [2021-03-10 20:38:40,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:40,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:40,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068581127] [2021-03-10 20:38:40,427 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:40,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:40,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:40,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:40,427 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) [2021-03-10 20:38:40,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:40,547 INFO L93 Difference]: Finished difference Result 1527 states and 4646 transitions. [2021-03-10 20:38:40,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:40,547 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:40,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:40,550 INFO L225 Difference]: With dead ends: 1527 [2021-03-10 20:38:40,550 INFO L226 Difference]: Without dead ends: 1316 [2021-03-10 20:38:40,550 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:40,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2021-03-10 20:38:40,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1138. [2021-03-10 20:38:40,565 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) [2021-03-10 20:38:40,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 3549 transitions. [2021-03-10 20:38:40,575 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 3549 transitions. Word has length 26 [2021-03-10 20:38:40,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:40,575 INFO L480 AbstractCegarLoop]: Abstraction has 1138 states and 3549 transitions. [2021-03-10 20:38:40,575 INFO L481 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) [2021-03-10 20:38:40,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 3549 transitions. [2021-03-10 20:38:40,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:40,577 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:40,577 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:40,577 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-10 20:38:40,577 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:40,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:40,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1402742104, now seen corresponding path program 18 times [2021-03-10 20:38:40,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:40,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318414812] [2021-03-10 20:38:40,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:40,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:40,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318414812] [2021-03-10 20:38:40,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:40,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 20:38:40,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897454894] [2021-03-10 20:38:40,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 20:38:40,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:40,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 20:38:40,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-10 20:38:40,629 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) [2021-03-10 20:38:40,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:40,724 INFO L93 Difference]: Finished difference Result 1698 states and 5175 transitions. [2021-03-10 20:38:40,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 20:38:40,724 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 [2021-03-10 20:38:40,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:40,727 INFO L225 Difference]: With dead ends: 1698 [2021-03-10 20:38:40,727 INFO L226 Difference]: Without dead ends: 1446 [2021-03-10 20:38:40,727 INFO L775 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 [2021-03-10 20:38:40,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2021-03-10 20:38:40,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1252. [2021-03-10 20:38:40,744 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) [2021-03-10 20:38:40,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3852 transitions. [2021-03-10 20:38:40,745 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3852 transitions. Word has length 26 [2021-03-10 20:38:40,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:40,745 INFO L480 AbstractCegarLoop]: Abstraction has 1252 states and 3852 transitions. [2021-03-10 20:38:40,746 INFO L481 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) [2021-03-10 20:38:40,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3852 transitions. [2021-03-10 20:38:40,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:40,747 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:40,747 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:40,747 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-10 20:38:40,747 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:40,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:40,748 INFO L82 PathProgramCache]: Analyzing trace with hash 543157110, now seen corresponding path program 19 times [2021-03-10 20:38:40,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:40,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983702140] [2021-03-10 20:38:40,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:40,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:40,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983702140] [2021-03-10 20:38:40,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:40,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:40,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243814374] [2021-03-10 20:38:40,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:40,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:40,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:40,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:40,801 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) [2021-03-10 20:38:40,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:40,934 INFO L93 Difference]: Finished difference Result 1559 states and 4705 transitions. [2021-03-10 20:38:40,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:40,935 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 [2021-03-10 20:38:40,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:40,937 INFO L225 Difference]: With dead ends: 1559 [2021-03-10 20:38:40,937 INFO L226 Difference]: Without dead ends: 1310 [2021-03-10 20:38:40,937 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:40,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2021-03-10 20:38:40,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1106. [2021-03-10 20:38:40,958 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) [2021-03-10 20:38:40,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 3413 transitions. [2021-03-10 20:38:40,959 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 3413 transitions. Word has length 26 [2021-03-10 20:38:40,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:40,959 INFO L480 AbstractCegarLoop]: Abstraction has 1106 states and 3413 transitions. [2021-03-10 20:38:40,960 INFO L481 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) [2021-03-10 20:38:40,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 3413 transitions. [2021-03-10 20:38:40,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:40,962 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:40,962 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:40,962 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-10 20:38:40,962 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:40,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:40,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1637674230, now seen corresponding path program 20 times [2021-03-10 20:38:40,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:40,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276832030] [2021-03-10 20:38:40,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:41,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:41,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276832030] [2021-03-10 20:38:41,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:41,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:41,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59629024] [2021-03-10 20:38:41,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:41,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:41,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:41,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:41,028 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) [2021-03-10 20:38:41,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:41,148 INFO L93 Difference]: Finished difference Result 1455 states and 4380 transitions. [2021-03-10 20:38:41,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:41,148 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 [2021-03-10 20:38:41,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:41,150 INFO L225 Difference]: With dead ends: 1455 [2021-03-10 20:38:41,150 INFO L226 Difference]: Without dead ends: 1268 [2021-03-10 20:38:41,151 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:41,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2021-03-10 20:38:41,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1116. [2021-03-10 20:38:41,164 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) [2021-03-10 20:38:41,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 3431 transitions. [2021-03-10 20:38:41,165 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 3431 transitions. Word has length 26 [2021-03-10 20:38:41,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:41,165 INFO L480 AbstractCegarLoop]: Abstraction has 1116 states and 3431 transitions. [2021-03-10 20:38:41,166 INFO L481 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) [2021-03-10 20:38:41,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 3431 transitions. [2021-03-10 20:38:41,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:41,167 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:41,167 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:41,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-10 20:38:41,167 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:41,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:41,167 INFO L82 PathProgramCache]: Analyzing trace with hash 778089236, now seen corresponding path program 21 times [2021-03-10 20:38:41,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:41,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027291251] [2021-03-10 20:38:41,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:41,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027291251] [2021-03-10 20:38:41,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:41,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:41,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061423912] [2021-03-10 20:38:41,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:41,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:41,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:41,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:41,225 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) [2021-03-10 20:38:41,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:41,393 INFO L93 Difference]: Finished difference Result 1381 states and 4160 transitions. [2021-03-10 20:38:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:41,394 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:41,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:41,396 INFO L225 Difference]: With dead ends: 1381 [2021-03-10 20:38:41,396 INFO L226 Difference]: Without dead ends: 1226 [2021-03-10 20:38:41,396 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:41,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2021-03-10 20:38:41,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1090. [2021-03-10 20:38:41,410 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) [2021-03-10 20:38:41,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 3365 transitions. [2021-03-10 20:38:41,411 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 3365 transitions. Word has length 26 [2021-03-10 20:38:41,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:41,411 INFO L480 AbstractCegarLoop]: Abstraction has 1090 states and 3365 transitions. [2021-03-10 20:38:41,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:41,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 3365 transitions. [2021-03-10 20:38:41,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:41,413 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:41,413 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:41,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-10 20:38:41,413 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:41,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:41,413 INFO L82 PathProgramCache]: Analyzing trace with hash -2102856174, now seen corresponding path program 22 times [2021-03-10 20:38:41,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:41,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125500611] [2021-03-10 20:38:41,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:41,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:41,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125500611] [2021-03-10 20:38:41,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:41,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:41,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53611310] [2021-03-10 20:38:41,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:41,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:41,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:41,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:41,463 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) [2021-03-10 20:38:41,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:41,585 INFO L93 Difference]: Finished difference Result 1426 states and 4315 transitions. [2021-03-10 20:38:41,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:41,585 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 [2021-03-10 20:38:41,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:41,587 INFO L225 Difference]: With dead ends: 1426 [2021-03-10 20:38:41,587 INFO L226 Difference]: Without dead ends: 1303 [2021-03-10 20:38:41,588 INFO L775 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 [2021-03-10 20:38:41,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2021-03-10 20:38:41,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1149. [2021-03-10 20:38:41,602 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) [2021-03-10 20:38:41,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 3546 transitions. [2021-03-10 20:38:41,604 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 3546 transitions. Word has length 26 [2021-03-10 20:38:41,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:41,604 INFO L480 AbstractCegarLoop]: Abstraction has 1149 states and 3546 transitions. [2021-03-10 20:38:41,604 INFO L481 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) [2021-03-10 20:38:41,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 3546 transitions. [2021-03-10 20:38:41,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:41,605 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:41,606 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:41,606 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-10 20:38:41,606 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:41,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:41,606 INFO L82 PathProgramCache]: Analyzing trace with hash -344182668, now seen corresponding path program 23 times [2021-03-10 20:38:41,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:41,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128915835] [2021-03-10 20:38:41,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:41,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:41,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128915835] [2021-03-10 20:38:41,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:41,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:41,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616652448] [2021-03-10 20:38:41,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:41,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:41,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:41,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:41,663 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) [2021-03-10 20:38:41,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:41,833 INFO L93 Difference]: Finished difference Result 1438 states and 4359 transitions. [2021-03-10 20:38:41,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:41,833 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:41,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:41,835 INFO L225 Difference]: With dead ends: 1438 [2021-03-10 20:38:41,835 INFO L226 Difference]: Without dead ends: 1327 [2021-03-10 20:38:41,835 INFO L775 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 [2021-03-10 20:38:41,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2021-03-10 20:38:41,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1164. [2021-03-10 20:38:41,848 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) [2021-03-10 20:38:41,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 3592 transitions. [2021-03-10 20:38:41,850 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 3592 transitions. Word has length 26 [2021-03-10 20:38:41,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:41,850 INFO L480 AbstractCegarLoop]: Abstraction has 1164 states and 3592 transitions. [2021-03-10 20:38:41,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:41,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 3592 transitions. [2021-03-10 20:38:41,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:41,852 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:41,852 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:41,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-10 20:38:41,852 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:41,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:41,852 INFO L82 PathProgramCache]: Analyzing trace with hash 525261940, now seen corresponding path program 24 times [2021-03-10 20:38:41,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:41,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790921594] [2021-03-10 20:38:41,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:41,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:41,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790921594] [2021-03-10 20:38:41,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:41,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:41,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689507743] [2021-03-10 20:38:41,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:41,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:41,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:41,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:41,917 INFO L87 Difference]: Start difference. First operand 1164 states and 3592 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:42,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:42,093 INFO L93 Difference]: Finished difference Result 1343 states and 4063 transitions. [2021-03-10 20:38:42,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:42,093 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:42,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:42,095 INFO L225 Difference]: With dead ends: 1343 [2021-03-10 20:38:42,095 INFO L226 Difference]: Without dead ends: 1209 [2021-03-10 20:38:42,095 INFO L775 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 [2021-03-10 20:38:42,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2021-03-10 20:38:42,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1153. [2021-03-10 20:38:42,108 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) [2021-03-10 20:38:42,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 3557 transitions. [2021-03-10 20:38:42,110 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 3557 transitions. Word has length 26 [2021-03-10 20:38:42,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:42,110 INFO L480 AbstractCegarLoop]: Abstraction has 1153 states and 3557 transitions. [2021-03-10 20:38:42,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:42,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 3557 transitions. [2021-03-10 20:38:42,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:42,112 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:42,112 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:42,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-10 20:38:42,112 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:42,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:42,112 INFO L82 PathProgramCache]: Analyzing trace with hash -943449290, now seen corresponding path program 25 times [2021-03-10 20:38:42,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:42,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378380923] [2021-03-10 20:38:42,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:42,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:42,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378380923] [2021-03-10 20:38:42,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:42,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:42,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571102144] [2021-03-10 20:38:42,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:42,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:42,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:42,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:42,180 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) [2021-03-10 20:38:42,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:42,370 INFO L93 Difference]: Finished difference Result 1431 states and 4320 transitions. [2021-03-10 20:38:42,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:42,370 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:42,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:42,372 INFO L225 Difference]: With dead ends: 1431 [2021-03-10 20:38:42,372 INFO L226 Difference]: Without dead ends: 1310 [2021-03-10 20:38:42,372 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:42,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2021-03-10 20:38:42,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1143. [2021-03-10 20:38:42,387 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) [2021-03-10 20:38:42,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 3527 transitions. [2021-03-10 20:38:42,389 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 3527 transitions. Word has length 26 [2021-03-10 20:38:42,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:42,389 INFO L480 AbstractCegarLoop]: Abstraction has 1143 states and 3527 transitions. [2021-03-10 20:38:42,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:42,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 3527 transitions. [2021-03-10 20:38:42,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:42,390 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:42,390 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:42,391 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-10 20:38:42,391 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:42,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:42,391 INFO L82 PathProgramCache]: Analyzing trace with hash -952851656, now seen corresponding path program 26 times [2021-03-10 20:38:42,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:42,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934923715] [2021-03-10 20:38:42,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:42,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:42,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934923715] [2021-03-10 20:38:42,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:42,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:42,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699994400] [2021-03-10 20:38:42,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:42,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:42,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:42,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:42,445 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) [2021-03-10 20:38:42,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:42,578 INFO L93 Difference]: Finished difference Result 1389 states and 4203 transitions. [2021-03-10 20:38:42,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:42,578 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 [2021-03-10 20:38:42,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:42,579 INFO L225 Difference]: With dead ends: 1389 [2021-03-10 20:38:42,579 INFO L226 Difference]: Without dead ends: 1278 [2021-03-10 20:38:42,580 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:42,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2021-03-10 20:38:42,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1180. [2021-03-10 20:38:42,592 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) [2021-03-10 20:38:42,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 3634 transitions. [2021-03-10 20:38:42,593 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 3634 transitions. Word has length 26 [2021-03-10 20:38:42,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:42,594 INFO L480 AbstractCegarLoop]: Abstraction has 1180 states and 3634 transitions. [2021-03-10 20:38:42,594 INFO L481 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) [2021-03-10 20:38:42,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 3634 transitions. [2021-03-10 20:38:42,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:42,595 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:42,595 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:42,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-10 20:38:42,595 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:42,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:42,596 INFO L82 PathProgramCache]: Analyzing trace with hash -83407048, now seen corresponding path program 27 times [2021-03-10 20:38:42,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:42,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143020456] [2021-03-10 20:38:42,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:42,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:42,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143020456] [2021-03-10 20:38:42,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:42,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:42,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795599171] [2021-03-10 20:38:42,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:42,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:42,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:42,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:42,651 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) [2021-03-10 20:38:42,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:42,811 INFO L93 Difference]: Finished difference Result 1506 states and 4529 transitions. [2021-03-10 20:38:42,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:42,812 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:42,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:42,813 INFO L225 Difference]: With dead ends: 1506 [2021-03-10 20:38:42,813 INFO L226 Difference]: Without dead ends: 1281 [2021-03-10 20:38:42,813 INFO L775 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 [2021-03-10 20:38:42,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-03-10 20:38:42,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1143. [2021-03-10 20:38:42,826 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) [2021-03-10 20:38:42,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 3503 transitions. [2021-03-10 20:38:42,827 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 3503 transitions. Word has length 26 [2021-03-10 20:38:42,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:42,827 INFO L480 AbstractCegarLoop]: Abstraction has 1143 states and 3503 transitions. [2021-03-10 20:38:42,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:42,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 3503 transitions. [2021-03-10 20:38:42,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:42,829 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:42,829 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:42,829 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-10 20:38:42,829 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:42,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:42,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1624374870, now seen corresponding path program 28 times [2021-03-10 20:38:42,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:42,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737409068] [2021-03-10 20:38:42,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:42,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:42,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737409068] [2021-03-10 20:38:42,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:42,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:42,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776544108] [2021-03-10 20:38:42,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:42,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:42,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:42,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:42,892 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) [2021-03-10 20:38:43,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:43,057 INFO L93 Difference]: Finished difference Result 1303 states and 3927 transitions. [2021-03-10 20:38:43,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:43,057 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:43,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:43,058 INFO L225 Difference]: With dead ends: 1303 [2021-03-10 20:38:43,058 INFO L226 Difference]: Without dead ends: 1192 [2021-03-10 20:38:43,059 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:43,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2021-03-10 20:38:43,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1154. [2021-03-10 20:38:43,070 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) [2021-03-10 20:38:43,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 3534 transitions. [2021-03-10 20:38:43,072 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 3534 transitions. Word has length 26 [2021-03-10 20:38:43,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:43,072 INFO L480 AbstractCegarLoop]: Abstraction has 1154 states and 3534 transitions. [2021-03-10 20:38:43,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:43,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 3534 transitions. [2021-03-10 20:38:43,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:43,074 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:43,074 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:43,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-10 20:38:43,074 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:43,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:43,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1801147818, now seen corresponding path program 29 times [2021-03-10 20:38:43,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:43,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405548295] [2021-03-10 20:38:43,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:43,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:43,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405548295] [2021-03-10 20:38:43,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:43,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:43,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120515656] [2021-03-10 20:38:43,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:43,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:43,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:43,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:43,130 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) [2021-03-10 20:38:43,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:43,290 INFO L93 Difference]: Finished difference Result 1496 states and 4503 transitions. [2021-03-10 20:38:43,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:43,290 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 [2021-03-10 20:38:43,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:43,291 INFO L225 Difference]: With dead ends: 1496 [2021-03-10 20:38:43,292 INFO L226 Difference]: Without dead ends: 1369 [2021-03-10 20:38:43,292 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:43,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2021-03-10 20:38:43,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1143. [2021-03-10 20:38:43,304 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) [2021-03-10 20:38:43,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 3501 transitions. [2021-03-10 20:38:43,306 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 3501 transitions. Word has length 26 [2021-03-10 20:38:43,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:43,306 INFO L480 AbstractCegarLoop]: Abstraction has 1143 states and 3501 transitions. [2021-03-10 20:38:43,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:43,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 3501 transitions. [2021-03-10 20:38:43,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:43,307 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:43,307 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:43,307 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-10 20:38:43,307 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:43,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:43,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1038261820, now seen corresponding path program 30 times [2021-03-10 20:38:43,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:43,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238417624] [2021-03-10 20:38:43,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:43,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:43,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238417624] [2021-03-10 20:38:43,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:43,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:43,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886791252] [2021-03-10 20:38:43,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:43,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:43,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:43,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:43,370 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) [2021-03-10 20:38:43,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:43,545 INFO L93 Difference]: Finished difference Result 1406 states and 4227 transitions. [2021-03-10 20:38:43,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:43,546 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:43,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:43,547 INFO L225 Difference]: With dead ends: 1406 [2021-03-10 20:38:43,547 INFO L226 Difference]: Without dead ends: 1239 [2021-03-10 20:38:43,548 INFO L775 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 [2021-03-10 20:38:43,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2021-03-10 20:38:43,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1113. [2021-03-10 20:38:43,560 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) [2021-03-10 20:38:43,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 3431 transitions. [2021-03-10 20:38:43,562 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 3431 transitions. Word has length 26 [2021-03-10 20:38:43,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:43,562 INFO L480 AbstractCegarLoop]: Abstraction has 1113 states and 3431 transitions. [2021-03-10 20:38:43,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:43,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 3431 transitions. [2021-03-10 20:38:43,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:43,564 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:43,564 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:43,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-10 20:38:43,564 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:43,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:43,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1327824616, now seen corresponding path program 31 times [2021-03-10 20:38:43,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:43,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849172014] [2021-03-10 20:38:43,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:43,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:43,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849172014] [2021-03-10 20:38:43,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:43,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 20:38:43,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355481921] [2021-03-10 20:38:43,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 20:38:43,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:43,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 20:38:43,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-10 20:38:43,608 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) [2021-03-10 20:38:43,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:43,725 INFO L93 Difference]: Finished difference Result 1453 states and 4359 transitions. [2021-03-10 20:38:43,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 20:38:43,725 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 [2021-03-10 20:38:43,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:43,727 INFO L225 Difference]: With dead ends: 1453 [2021-03-10 20:38:43,727 INFO L226 Difference]: Without dead ends: 1292 [2021-03-10 20:38:43,727 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.0ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-10 20:38:43,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-03-10 20:38:43,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1206. [2021-03-10 20:38:43,740 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) [2021-03-10 20:38:43,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 3680 transitions. [2021-03-10 20:38:43,742 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 3680 transitions. Word has length 26 [2021-03-10 20:38:43,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:43,743 INFO L480 AbstractCegarLoop]: Abstraction has 1206 states and 3680 transitions. [2021-03-10 20:38:43,743 INFO L481 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) [2021-03-10 20:38:43,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 3680 transitions. [2021-03-10 20:38:43,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:43,744 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:43,744 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:43,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-10 20:38:43,745 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:43,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:43,745 INFO L82 PathProgramCache]: Analyzing trace with hash 2107557686, now seen corresponding path program 32 times [2021-03-10 20:38:43,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:43,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434680299] [2021-03-10 20:38:43,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:43,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:43,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434680299] [2021-03-10 20:38:43,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:43,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:43,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556224185] [2021-03-10 20:38:43,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:43,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:43,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:43,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:43,801 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) [2021-03-10 20:38:43,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:43,933 INFO L93 Difference]: Finished difference Result 1409 states and 4234 transitions. [2021-03-10 20:38:43,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:43,934 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 [2021-03-10 20:38:43,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:43,935 INFO L225 Difference]: With dead ends: 1409 [2021-03-10 20:38:43,936 INFO L226 Difference]: Without dead ends: 1286 [2021-03-10 20:38:43,936 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:43,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2021-03-10 20:38:43,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1180. [2021-03-10 20:38:43,948 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) [2021-03-10 20:38:43,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 3612 transitions. [2021-03-10 20:38:43,950 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 3612 transitions. Word has length 26 [2021-03-10 20:38:43,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:43,950 INFO L480 AbstractCegarLoop]: Abstraction has 1180 states and 3612 transitions. [2021-03-10 20:38:43,950 INFO L481 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) [2021-03-10 20:38:43,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 3612 transitions. [2021-03-10 20:38:43,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:43,951 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:43,951 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:43,951 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-10 20:38:43,952 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:43,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:43,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1205087834, now seen corresponding path program 33 times [2021-03-10 20:38:43,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:43,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676882270] [2021-03-10 20:38:43,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:43,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:43,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676882270] [2021-03-10 20:38:43,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:43,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 20:38:43,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442554497] [2021-03-10 20:38:43,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 20:38:43,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:43,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 20:38:43,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-10 20:38:43,999 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) [2021-03-10 20:38:44,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:44,096 INFO L93 Difference]: Finished difference Result 1516 states and 4589 transitions. [2021-03-10 20:38:44,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 20:38:44,097 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 [2021-03-10 20:38:44,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:44,098 INFO L225 Difference]: With dead ends: 1516 [2021-03-10 20:38:44,098 INFO L226 Difference]: Without dead ends: 1419 [2021-03-10 20:38:44,098 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.6ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-10 20:38:44,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2021-03-10 20:38:44,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1247. [2021-03-10 20:38:44,112 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) [2021-03-10 20:38:44,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 3825 transitions. [2021-03-10 20:38:44,113 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 3825 transitions. Word has length 26 [2021-03-10 20:38:44,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:44,114 INFO L480 AbstractCegarLoop]: Abstraction has 1247 states and 3825 transitions. [2021-03-10 20:38:44,114 INFO L481 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) [2021-03-10 20:38:44,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 3825 transitions. [2021-03-10 20:38:44,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:44,115 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:44,115 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:44,115 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-10 20:38:44,115 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:44,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:44,116 INFO L82 PathProgramCache]: Analyzing trace with hash 296836698, now seen corresponding path program 34 times [2021-03-10 20:38:44,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:44,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543786708] [2021-03-10 20:38:44,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:44,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:44,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543786708] [2021-03-10 20:38:44,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:44,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:44,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779380707] [2021-03-10 20:38:44,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:44,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:44,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:44,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:44,189 INFO L87 Difference]: Start difference. First operand 1247 states and 3825 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:44,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:44,345 INFO L93 Difference]: Finished difference Result 1463 states and 4440 transitions. [2021-03-10 20:38:44,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:44,345 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 [2021-03-10 20:38:44,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:44,347 INFO L225 Difference]: With dead ends: 1463 [2021-03-10 20:38:44,347 INFO L226 Difference]: Without dead ends: 1384 [2021-03-10 20:38:44,347 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:44,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2021-03-10 20:38:44,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1263. [2021-03-10 20:38:44,359 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) [2021-03-10 20:38:44,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 3875 transitions. [2021-03-10 20:38:44,361 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 3875 transitions. Word has length 26 [2021-03-10 20:38:44,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:44,361 INFO L480 AbstractCegarLoop]: Abstraction has 1263 states and 3875 transitions. [2021-03-10 20:38:44,361 INFO L481 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) [2021-03-10 20:38:44,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 3875 transitions. [2021-03-10 20:38:44,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:44,363 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:44,363 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:44,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-10 20:38:44,363 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:44,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:44,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1166281306, now seen corresponding path program 35 times [2021-03-10 20:38:44,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:44,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354191873] [2021-03-10 20:38:44,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:44,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:44,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354191873] [2021-03-10 20:38:44,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:44,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:44,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045565287] [2021-03-10 20:38:44,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:44,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:44,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:44,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:44,415 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) [2021-03-10 20:38:44,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:44,552 INFO L93 Difference]: Finished difference Result 1486 states and 4488 transitions. [2021-03-10 20:38:44,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:44,552 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 [2021-03-10 20:38:44,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:44,554 INFO L225 Difference]: With dead ends: 1486 [2021-03-10 20:38:44,554 INFO L226 Difference]: Without dead ends: 1382 [2021-03-10 20:38:44,554 INFO L775 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 [2021-03-10 20:38:44,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-03-10 20:38:44,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1252. [2021-03-10 20:38:44,566 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) [2021-03-10 20:38:44,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3838 transitions. [2021-03-10 20:38:44,568 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3838 transitions. Word has length 26 [2021-03-10 20:38:44,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:44,568 INFO L480 AbstractCegarLoop]: Abstraction has 1252 states and 3838 transitions. [2021-03-10 20:38:44,568 INFO L481 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) [2021-03-10 20:38:44,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3838 transitions. [2021-03-10 20:38:44,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:44,569 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:44,569 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:44,569 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-10 20:38:44,569 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:44,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:44,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1217412664, now seen corresponding path program 36 times [2021-03-10 20:38:44,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:44,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196519211] [2021-03-10 20:38:44,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:44,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196519211] [2021-03-10 20:38:44,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:44,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:44,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237422785] [2021-03-10 20:38:44,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:44,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:44,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:44,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:44,615 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) [2021-03-10 20:38:44,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:44,738 INFO L93 Difference]: Finished difference Result 1521 states and 4598 transitions. [2021-03-10 20:38:44,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:44,738 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 [2021-03-10 20:38:44,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:44,740 INFO L225 Difference]: With dead ends: 1521 [2021-03-10 20:38:44,740 INFO L226 Difference]: Without dead ends: 1427 [2021-03-10 20:38:44,740 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:44,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2021-03-10 20:38:44,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1240. [2021-03-10 20:38:44,753 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) [2021-03-10 20:38:44,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 3803 transitions. [2021-03-10 20:38:44,754 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 3803 transitions. Word has length 26 [2021-03-10 20:38:44,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:44,754 INFO L480 AbstractCegarLoop]: Abstraction has 1240 states and 3803 transitions. [2021-03-10 20:38:44,754 INFO L481 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) [2021-03-10 20:38:44,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 3803 transitions. [2021-03-10 20:38:44,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:44,756 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:44,756 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:44,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-10 20:38:44,756 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:44,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:44,756 INFO L82 PathProgramCache]: Analyzing trace with hash 369322260, now seen corresponding path program 37 times [2021-03-10 20:38:44,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:44,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093501486] [2021-03-10 20:38:44,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:44,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:44,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093501486] [2021-03-10 20:38:44,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:44,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 20:38:44,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719623164] [2021-03-10 20:38:44,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 20:38:44,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:44,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 20:38:44,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-10 20:38:44,795 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) [2021-03-10 20:38:44,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:44,889 INFO L93 Difference]: Finished difference Result 1472 states and 4446 transitions. [2021-03-10 20:38:44,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 20:38:44,889 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 [2021-03-10 20:38:44,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:44,891 INFO L225 Difference]: With dead ends: 1472 [2021-03-10 20:38:44,891 INFO L226 Difference]: Without dead ends: 1393 [2021-03-10 20:38:44,891 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.9ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-10 20:38:44,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2021-03-10 20:38:44,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1277. [2021-03-10 20:38:44,904 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) [2021-03-10 20:38:44,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 3910 transitions. [2021-03-10 20:38:44,906 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 3910 transitions. Word has length 26 [2021-03-10 20:38:44,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:44,906 INFO L480 AbstractCegarLoop]: Abstraction has 1277 states and 3910 transitions. [2021-03-10 20:38:44,906 INFO L481 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) [2021-03-10 20:38:44,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 3910 transitions. [2021-03-10 20:38:44,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:44,907 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:44,907 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:44,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-10 20:38:44,908 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:44,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:44,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1238766868, now seen corresponding path program 38 times [2021-03-10 20:38:44,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:44,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356192292] [2021-03-10 20:38:44,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:44,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:44,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356192292] [2021-03-10 20:38:44,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:44,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:44,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171499340] [2021-03-10 20:38:44,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:44,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:44,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:44,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:44,961 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) [2021-03-10 20:38:45,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:45,108 INFO L93 Difference]: Finished difference Result 1553 states and 4668 transitions. [2021-03-10 20:38:45,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:45,108 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 [2021-03-10 20:38:45,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:45,110 INFO L225 Difference]: With dead ends: 1553 [2021-03-10 20:38:45,110 INFO L226 Difference]: Without dead ends: 1354 [2021-03-10 20:38:45,110 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:45,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2021-03-10 20:38:45,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1244. [2021-03-10 20:38:45,128 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) [2021-03-10 20:38:45,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3779 transitions. [2021-03-10 20:38:45,130 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3779 transitions. Word has length 26 [2021-03-10 20:38:45,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:45,130 INFO L480 AbstractCegarLoop]: Abstraction has 1244 states and 3779 transitions. [2021-03-10 20:38:45,130 INFO L481 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) [2021-03-10 20:38:45,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3779 transitions. [2021-03-10 20:38:45,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:45,131 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:45,131 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:45,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-10 20:38:45,132 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:45,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:45,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1168096970, now seen corresponding path program 39 times [2021-03-10 20:38:45,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:45,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554959161] [2021-03-10 20:38:45,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:45,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:45,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554959161] [2021-03-10 20:38:45,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:45,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:45,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450779115] [2021-03-10 20:38:45,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:45,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:45,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:45,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:45,183 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) [2021-03-10 20:38:45,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:45,313 INFO L93 Difference]: Finished difference Result 1430 states and 4297 transitions. [2021-03-10 20:38:45,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:45,313 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 [2021-03-10 20:38:45,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:45,315 INFO L225 Difference]: With dead ends: 1430 [2021-03-10 20:38:45,315 INFO L226 Difference]: Without dead ends: 1351 [2021-03-10 20:38:45,315 INFO L775 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 [2021-03-10 20:38:45,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-03-10 20:38:45,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1255. [2021-03-10 20:38:45,328 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) [2021-03-10 20:38:45,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 3810 transitions. [2021-03-10 20:38:45,330 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 3810 transitions. Word has length 26 [2021-03-10 20:38:45,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:45,330 INFO L480 AbstractCegarLoop]: Abstraction has 1255 states and 3810 transitions. [2021-03-10 20:38:45,330 INFO L481 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) [2021-03-10 20:38:45,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 3810 transitions. [2021-03-10 20:38:45,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:45,332 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:45,332 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:45,332 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-10 20:38:45,332 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:45,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:45,332 INFO L82 PathProgramCache]: Analyzing trace with hash -298652362, now seen corresponding path program 40 times [2021-03-10 20:38:45,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:45,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311891076] [2021-03-10 20:38:45,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:45,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:45,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311891076] [2021-03-10 20:38:45,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:45,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:45,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616085392] [2021-03-10 20:38:45,382 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:45,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:45,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:45,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:45,382 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) [2021-03-10 20:38:45,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:45,508 INFO L93 Difference]: Finished difference Result 1537 states and 4623 transitions. [2021-03-10 20:38:45,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:45,509 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 [2021-03-10 20:38:45,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:45,510 INFO L225 Difference]: With dead ends: 1537 [2021-03-10 20:38:45,510 INFO L226 Difference]: Without dead ends: 1442 [2021-03-10 20:38:45,510 INFO L775 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 [2021-03-10 20:38:45,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2021-03-10 20:38:45,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1244. [2021-03-10 20:38:45,535 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) [2021-03-10 20:38:45,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3776 transitions. [2021-03-10 20:38:45,536 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3776 transitions. Word has length 26 [2021-03-10 20:38:45,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:45,537 INFO L480 AbstractCegarLoop]: Abstraction has 1244 states and 3776 transitions. [2021-03-10 20:38:45,537 INFO L481 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) [2021-03-10 20:38:45,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3776 transitions. [2021-03-10 20:38:45,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:45,538 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:45,538 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:45,538 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-10 20:38:45,538 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:45,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:45,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1872416688, now seen corresponding path program 41 times [2021-03-10 20:38:45,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:45,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804025801] [2021-03-10 20:38:45,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:45,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:45,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804025801] [2021-03-10 20:38:45,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:45,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:45,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919635917] [2021-03-10 20:38:45,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:45,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:45,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:45,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:45,589 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) [2021-03-10 20:38:45,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:45,717 INFO L93 Difference]: Finished difference Result 1525 states and 4571 transitions. [2021-03-10 20:38:45,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:45,717 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 [2021-03-10 20:38:45,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:45,719 INFO L225 Difference]: With dead ends: 1525 [2021-03-10 20:38:45,719 INFO L226 Difference]: Without dead ends: 1377 [2021-03-10 20:38:45,719 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:45,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2021-03-10 20:38:45,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1245. [2021-03-10 20:38:45,731 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) [2021-03-10 20:38:45,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 3786 transitions. [2021-03-10 20:38:45,733 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 3786 transitions. Word has length 26 [2021-03-10 20:38:45,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:45,733 INFO L480 AbstractCegarLoop]: Abstraction has 1245 states and 3786 transitions. [2021-03-10 20:38:45,733 INFO L481 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) [2021-03-10 20:38:45,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 3786 transitions. [2021-03-10 20:38:45,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:45,734 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:45,734 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:45,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-10 20:38:45,734 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:45,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:45,735 INFO L82 PathProgramCache]: Analyzing trace with hash 733362486, now seen corresponding path program 42 times [2021-03-10 20:38:45,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:45,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996580563] [2021-03-10 20:38:45,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:45,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:45,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996580563] [2021-03-10 20:38:45,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:45,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:45,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892583642] [2021-03-10 20:38:45,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:45,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:45,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:45,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:45,799 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) [2021-03-10 20:38:45,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:45,927 INFO L93 Difference]: Finished difference Result 1531 states and 4573 transitions. [2021-03-10 20:38:45,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:45,927 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 [2021-03-10 20:38:45,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:45,929 INFO L225 Difference]: With dead ends: 1531 [2021-03-10 20:38:45,929 INFO L226 Difference]: Without dead ends: 1401 [2021-03-10 20:38:45,929 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:45,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2021-03-10 20:38:45,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1297. [2021-03-10 20:38:45,942 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) [2021-03-10 20:38:45,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 3926 transitions. [2021-03-10 20:38:45,943 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 3926 transitions. Word has length 26 [2021-03-10 20:38:45,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:45,943 INFO L480 AbstractCegarLoop]: Abstraction has 1297 states and 3926 transitions. [2021-03-10 20:38:45,943 INFO L481 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) [2021-03-10 20:38:45,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 3926 transitions. [2021-03-10 20:38:45,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:45,945 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:45,945 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:45,945 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-10 20:38:45,945 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:45,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:45,945 INFO L82 PathProgramCache]: Analyzing trace with hash -126222508, now seen corresponding path program 43 times [2021-03-10 20:38:45,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:45,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935588581] [2021-03-10 20:38:45,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:46,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:46,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935588581] [2021-03-10 20:38:46,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:46,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:46,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488103814] [2021-03-10 20:38:46,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:46,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:46,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:46,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:46,064 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) [2021-03-10 20:38:46,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:46,233 INFO L93 Difference]: Finished difference Result 1518 states and 4526 transitions. [2021-03-10 20:38:46,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:46,233 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:46,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:46,235 INFO L225 Difference]: With dead ends: 1518 [2021-03-10 20:38:46,235 INFO L226 Difference]: Without dead ends: 1395 [2021-03-10 20:38:46,235 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 96.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:46,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2021-03-10 20:38:46,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1271. [2021-03-10 20:38:46,248 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) [2021-03-10 20:38:46,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 3860 transitions. [2021-03-10 20:38:46,250 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 3860 transitions. Word has length 26 [2021-03-10 20:38:46,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:46,250 INFO L480 AbstractCegarLoop]: Abstraction has 1271 states and 3860 transitions. [2021-03-10 20:38:46,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:46,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 3860 transitions. [2021-03-10 20:38:46,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:46,252 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:46,252 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:46,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-10 20:38:46,252 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:46,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:46,252 INFO L82 PathProgramCache]: Analyzing trace with hash 363756408, now seen corresponding path program 44 times [2021-03-10 20:38:46,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:46,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133863146] [2021-03-10 20:38:46,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:46,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:46,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133863146] [2021-03-10 20:38:46,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:46,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:46,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729010875] [2021-03-10 20:38:46,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:46,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:46,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:46,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:46,302 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) [2021-03-10 20:38:46,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:46,435 INFO L93 Difference]: Finished difference Result 1636 states and 4901 transitions. [2021-03-10 20:38:46,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:46,436 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 [2021-03-10 20:38:46,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:46,437 INFO L225 Difference]: With dead ends: 1636 [2021-03-10 20:38:46,437 INFO L226 Difference]: Without dead ends: 1496 [2021-03-10 20:38:46,437 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:46,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-03-10 20:38:46,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1331. [2021-03-10 20:38:46,450 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) [2021-03-10 20:38:46,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 4038 transitions. [2021-03-10 20:38:46,452 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 4038 transitions. Word has length 26 [2021-03-10 20:38:46,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:46,452 INFO L480 AbstractCegarLoop]: Abstraction has 1331 states and 4038 transitions. [2021-03-10 20:38:46,452 INFO L481 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) [2021-03-10 20:38:46,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 4038 transitions. [2021-03-10 20:38:46,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:46,454 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:46,454 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:46,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-10 20:38:46,454 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:46,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:46,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1287799378, now seen corresponding path program 45 times [2021-03-10 20:38:46,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:46,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530921377] [2021-03-10 20:38:46,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:46,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:46,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530921377] [2021-03-10 20:38:46,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:46,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:46,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760334156] [2021-03-10 20:38:46,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:46,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:46,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:46,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:46,509 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) [2021-03-10 20:38:46,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:46,676 INFO L93 Difference]: Finished difference Result 1514 states and 4527 transitions. [2021-03-10 20:38:46,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:46,676 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:46,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:46,678 INFO L225 Difference]: With dead ends: 1514 [2021-03-10 20:38:46,678 INFO L226 Difference]: Without dead ends: 1403 [2021-03-10 20:38:46,678 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:46,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2021-03-10 20:38:46,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1295. [2021-03-10 20:38:46,692 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) [2021-03-10 20:38:46,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 3921 transitions. [2021-03-10 20:38:46,693 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 3921 transitions. Word has length 26 [2021-03-10 20:38:46,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:46,693 INFO L480 AbstractCegarLoop]: Abstraction has 1295 states and 3921 transitions. [2021-03-10 20:38:46,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:46,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 3921 transitions. [2021-03-10 20:38:46,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:46,696 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:46,696 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:46,696 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-10 20:38:46,697 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:46,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:46,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1248494412, now seen corresponding path program 46 times [2021-03-10 20:38:46,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:46,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968737346] [2021-03-10 20:38:46,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:46,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:46,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968737346] [2021-03-10 20:38:46,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:46,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:46,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792945186] [2021-03-10 20:38:46,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:46,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:46,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:46,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:46,779 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) [2021-03-10 20:38:46,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:46,954 INFO L93 Difference]: Finished difference Result 1453 states and 4342 transitions. [2021-03-10 20:38:46,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:46,954 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:46,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:46,956 INFO L225 Difference]: With dead ends: 1453 [2021-03-10 20:38:46,956 INFO L226 Difference]: Without dead ends: 1374 [2021-03-10 20:38:46,956 INFO L775 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 [2021-03-10 20:38:46,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2021-03-10 20:38:46,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1319. [2021-03-10 20:38:46,971 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) [2021-03-10 20:38:46,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 3994 transitions. [2021-03-10 20:38:46,973 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 3994 transitions. Word has length 26 [2021-03-10 20:38:46,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:46,973 INFO L480 AbstractCegarLoop]: Abstraction has 1319 states and 3994 transitions. [2021-03-10 20:38:46,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:46,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 3994 transitions. [2021-03-10 20:38:46,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:46,975 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:46,975 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:46,975 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-10 20:38:46,975 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:46,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:46,975 INFO L82 PathProgramCache]: Analyzing trace with hash -379049804, now seen corresponding path program 47 times [2021-03-10 20:38:46,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:46,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101310570] [2021-03-10 20:38:46,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:47,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:47,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101310570] [2021-03-10 20:38:47,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:47,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:47,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306609950] [2021-03-10 20:38:47,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:47,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:47,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:47,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:47,039 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) [2021-03-10 20:38:47,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:47,206 INFO L93 Difference]: Finished difference Result 1550 states and 4630 transitions. [2021-03-10 20:38:47,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:47,206 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:47,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:47,208 INFO L225 Difference]: With dead ends: 1550 [2021-03-10 20:38:47,208 INFO L226 Difference]: Without dead ends: 1455 [2021-03-10 20:38:47,209 INFO L775 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 [2021-03-10 20:38:47,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-03-10 20:38:47,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1323. [2021-03-10 20:38:47,222 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) [2021-03-10 20:38:47,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 4007 transitions. [2021-03-10 20:38:47,224 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 4007 transitions. Word has length 26 [2021-03-10 20:38:47,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:47,224 INFO L480 AbstractCegarLoop]: Abstraction has 1323 states and 4007 transitions. [2021-03-10 20:38:47,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:47,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 4007 transitions. [2021-03-10 20:38:47,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:47,225 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:47,226 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:47,226 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-03-10 20:38:47,226 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:47,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:47,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1847761034, now seen corresponding path program 48 times [2021-03-10 20:38:47,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:47,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136966537] [2021-03-10 20:38:47,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:47,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:47,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136966537] [2021-03-10 20:38:47,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:47,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:47,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394574331] [2021-03-10 20:38:47,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:47,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:47,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:47,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:47,298 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) [2021-03-10 20:38:47,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:47,467 INFO L93 Difference]: Finished difference Result 1551 states and 4630 transitions. [2021-03-10 20:38:47,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:47,467 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:47,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:47,469 INFO L225 Difference]: With dead ends: 1551 [2021-03-10 20:38:47,469 INFO L226 Difference]: Without dead ends: 1472 [2021-03-10 20:38:47,469 INFO L775 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 [2021-03-10 20:38:47,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2021-03-10 20:38:47,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1327. [2021-03-10 20:38:47,482 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) [2021-03-10 20:38:47,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 4015 transitions. [2021-03-10 20:38:47,484 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 4015 transitions. Word has length 26 [2021-03-10 20:38:47,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:47,485 INFO L480 AbstractCegarLoop]: Abstraction has 1327 states and 4015 transitions. [2021-03-10 20:38:47,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:47,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 4015 transitions. [2021-03-10 20:38:47,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:47,489 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:47,489 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:47,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-03-10 20:38:47,489 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:47,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:47,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1873808986, now seen corresponding path program 49 times [2021-03-10 20:38:47,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:47,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820471621] [2021-03-10 20:38:47,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:47,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:47,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820471621] [2021-03-10 20:38:47,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:47,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:47,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723339922] [2021-03-10 20:38:47,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:47,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:47,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:47,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:47,556 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) [2021-03-10 20:38:47,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:47,736 INFO L93 Difference]: Finished difference Result 1593 states and 4759 transitions. [2021-03-10 20:38:47,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:47,737 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:47,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:47,738 INFO L225 Difference]: With dead ends: 1593 [2021-03-10 20:38:47,738 INFO L226 Difference]: Without dead ends: 1491 [2021-03-10 20:38:47,739 INFO L775 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 [2021-03-10 20:38:47,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2021-03-10 20:38:47,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1313. [2021-03-10 20:38:47,751 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) [2021-03-10 20:38:47,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 3985 transitions. [2021-03-10 20:38:47,753 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 3985 transitions. Word has length 26 [2021-03-10 20:38:47,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:47,753 INFO L480 AbstractCegarLoop]: Abstraction has 1313 states and 3985 transitions. [2021-03-10 20:38:47,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:47,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 3985 transitions. [2021-03-10 20:38:47,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:47,754 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:47,754 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:47,754 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-03-10 20:38:47,754 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:47,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:47,755 INFO L82 PathProgramCache]: Analyzing trace with hash -440597224, now seen corresponding path program 50 times [2021-03-10 20:38:47,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:47,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087314673] [2021-03-10 20:38:47,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:47,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:47,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087314673] [2021-03-10 20:38:47,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:47,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:47,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408663185] [2021-03-10 20:38:47,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:47,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:47,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:47,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:47,800 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) [2021-03-10 20:38:47,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:47,923 INFO L93 Difference]: Finished difference Result 1603 states and 4787 transitions. [2021-03-10 20:38:47,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:47,924 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 [2021-03-10 20:38:47,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:47,925 INFO L225 Difference]: With dead ends: 1603 [2021-03-10 20:38:47,925 INFO L226 Difference]: Without dead ends: 1453 [2021-03-10 20:38:47,925 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:47,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-03-10 20:38:47,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1339. [2021-03-10 20:38:47,938 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) [2021-03-10 20:38:47,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 4059 transitions. [2021-03-10 20:38:47,939 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 4059 transitions. Word has length 26 [2021-03-10 20:38:47,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:47,939 INFO L480 AbstractCegarLoop]: Abstraction has 1339 states and 4059 transitions. [2021-03-10 20:38:47,939 INFO L481 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) [2021-03-10 20:38:47,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 4059 transitions. [2021-03-10 20:38:47,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:47,941 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:47,941 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:47,941 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-03-10 20:38:47,941 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:47,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:47,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1300182218, now seen corresponding path program 51 times [2021-03-10 20:38:47,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:47,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907843018] [2021-03-10 20:38:47,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:48,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907843018] [2021-03-10 20:38:48,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:48,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:48,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114396440] [2021-03-10 20:38:48,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:48,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:48,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:48,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:48,012 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) [2021-03-10 20:38:48,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:48,199 INFO L93 Difference]: Finished difference Result 1564 states and 4681 transitions. [2021-03-10 20:38:48,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:48,200 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:48,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:48,202 INFO L225 Difference]: With dead ends: 1564 [2021-03-10 20:38:48,202 INFO L226 Difference]: Without dead ends: 1432 [2021-03-10 20:38:48,202 INFO L775 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 [2021-03-10 20:38:48,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2021-03-10 20:38:48,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1313. [2021-03-10 20:38:48,215 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) [2021-03-10 20:38:48,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 3991 transitions. [2021-03-10 20:38:48,218 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 3991 transitions. Word has length 26 [2021-03-10 20:38:48,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:48,220 INFO L480 AbstractCegarLoop]: Abstraction has 1313 states and 3991 transitions. [2021-03-10 20:38:48,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:48,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 3991 transitions. [2021-03-10 20:38:48,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:48,223 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:48,223 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:48,224 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-03-10 20:38:48,224 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:48,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:48,224 INFO L82 PathProgramCache]: Analyzing trace with hash -658405768, now seen corresponding path program 52 times [2021-03-10 20:38:48,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:48,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534169407] [2021-03-10 20:38:48,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:48,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534169407] [2021-03-10 20:38:48,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:48,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:48,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332733371] [2021-03-10 20:38:48,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:48,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:48,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:48,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:48,281 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) [2021-03-10 20:38:48,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:48,423 INFO L93 Difference]: Finished difference Result 1533 states and 4603 transitions. [2021-03-10 20:38:48,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:48,423 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 [2021-03-10 20:38:48,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:48,425 INFO L225 Difference]: With dead ends: 1533 [2021-03-10 20:38:48,425 INFO L226 Difference]: Without dead ends: 1436 [2021-03-10 20:38:48,425 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:48,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2021-03-10 20:38:48,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1330. [2021-03-10 20:38:48,438 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) [2021-03-10 20:38:48,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 4042 transitions. [2021-03-10 20:38:48,440 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 4042 transitions. Word has length 26 [2021-03-10 20:38:48,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:48,440 INFO L480 AbstractCegarLoop]: Abstraction has 1330 states and 4042 transitions. [2021-03-10 20:38:48,440 INFO L481 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) [2021-03-10 20:38:48,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 4042 transitions. [2021-03-10 20:38:48,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:48,442 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:48,442 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:48,442 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-03-10 20:38:48,442 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:48,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:48,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1566656904, now seen corresponding path program 53 times [2021-03-10 20:38:48,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:48,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848606672] [2021-03-10 20:38:48,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:48,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848606672] [2021-03-10 20:38:48,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:48,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:48,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882630934] [2021-03-10 20:38:48,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:48,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:48,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:48,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:48,498 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) [2021-03-10 20:38:48,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:48,660 INFO L93 Difference]: Finished difference Result 1540 states and 4628 transitions. [2021-03-10 20:38:48,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:48,660 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:48,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:48,662 INFO L225 Difference]: With dead ends: 1540 [2021-03-10 20:38:48,662 INFO L226 Difference]: Without dead ends: 1461 [2021-03-10 20:38:48,662 INFO L775 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 [2021-03-10 20:38:48,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2021-03-10 20:38:48,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1342. [2021-03-10 20:38:48,675 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) [2021-03-10 20:38:48,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 4076 transitions. [2021-03-10 20:38:48,676 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 4076 transitions. Word has length 26 [2021-03-10 20:38:48,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:48,676 INFO L480 AbstractCegarLoop]: Abstraction has 1342 states and 4076 transitions. [2021-03-10 20:38:48,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:48,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 4076 transitions. [2021-03-10 20:38:48,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:48,678 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:48,678 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:48,678 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-03-10 20:38:48,678 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:48,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:48,678 INFO L82 PathProgramCache]: Analyzing trace with hash -697212296, now seen corresponding path program 54 times [2021-03-10 20:38:48,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:48,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997961349] [2021-03-10 20:38:48,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:48,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:48,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997961349] [2021-03-10 20:38:48,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:48,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:48,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820745850] [2021-03-10 20:38:48,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:48,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:48,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:48,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:48,741 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) [2021-03-10 20:38:48,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:48,928 INFO L93 Difference]: Finished difference Result 1587 states and 4770 transitions. [2021-03-10 20:38:48,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:48,928 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:48,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:48,930 INFO L225 Difference]: With dead ends: 1587 [2021-03-10 20:38:48,930 INFO L226 Difference]: Without dead ends: 1474 [2021-03-10 20:38:48,930 INFO L775 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 [2021-03-10 20:38:48,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-03-10 20:38:48,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1340. [2021-03-10 20:38:48,944 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) [2021-03-10 20:38:48,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 4071 transitions. [2021-03-10 20:38:48,946 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 4071 transitions. Word has length 26 [2021-03-10 20:38:48,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:48,946 INFO L480 AbstractCegarLoop]: Abstraction has 1340 states and 4071 transitions. [2021-03-10 20:38:48,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:48,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 4071 transitions. [2021-03-10 20:38:48,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:48,948 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:48,948 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:48,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-03-10 20:38:48,948 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:48,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:48,948 INFO L82 PathProgramCache]: Analyzing trace with hash -646080938, now seen corresponding path program 55 times [2021-03-10 20:38:48,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:48,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045964329] [2021-03-10 20:38:48,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:49,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:49,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045964329] [2021-03-10 20:38:49,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:49,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:49,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401268125] [2021-03-10 20:38:49,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:49,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:49,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:49,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:49,014 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) [2021-03-10 20:38:49,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:49,190 INFO L93 Difference]: Finished difference Result 1550 states and 4655 transitions. [2021-03-10 20:38:49,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:49,190 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:49,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:49,192 INFO L225 Difference]: With dead ends: 1550 [2021-03-10 20:38:49,192 INFO L226 Difference]: Without dead ends: 1456 [2021-03-10 20:38:49,192 INFO L775 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 [2021-03-10 20:38:49,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2021-03-10 20:38:49,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1323. [2021-03-10 20:38:49,205 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) [2021-03-10 20:38:49,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 4022 transitions. [2021-03-10 20:38:49,206 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 4022 transitions. Word has length 26 [2021-03-10 20:38:49,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:49,206 INFO L480 AbstractCegarLoop]: Abstraction has 1323 states and 4022 transitions. [2021-03-10 20:38:49,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:49,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 4022 transitions. [2021-03-10 20:38:49,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:49,208 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:49,208 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:49,208 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-03-10 20:38:49,208 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:49,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:49,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1155018158, now seen corresponding path program 56 times [2021-03-10 20:38:49,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:49,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469023267] [2021-03-10 20:38:49,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:49,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:49,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469023267] [2021-03-10 20:38:49,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:49,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:49,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038743209] [2021-03-10 20:38:49,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:49,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:49,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:49,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:49,272 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) [2021-03-10 20:38:49,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:49,406 INFO L93 Difference]: Finished difference Result 1614 states and 4865 transitions. [2021-03-10 20:38:49,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:49,407 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 [2021-03-10 20:38:49,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:49,408 INFO L225 Difference]: With dead ends: 1614 [2021-03-10 20:38:49,408 INFO L226 Difference]: Without dead ends: 1535 [2021-03-10 20:38:49,409 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:49,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2021-03-10 20:38:49,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1344. [2021-03-10 20:38:49,422 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) [2021-03-10 20:38:49,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 4084 transitions. [2021-03-10 20:38:49,423 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 4084 transitions. Word has length 26 [2021-03-10 20:38:49,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:49,423 INFO L480 AbstractCegarLoop]: Abstraction has 1344 states and 4084 transitions. [2021-03-10 20:38:49,423 INFO L481 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) [2021-03-10 20:38:49,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 4084 transitions. [2021-03-10 20:38:49,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:49,425 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:49,425 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:49,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-03-10 20:38:49,425 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:49,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:49,425 INFO L82 PathProgramCache]: Analyzing trace with hash 67669594, now seen corresponding path program 57 times [2021-03-10 20:38:49,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:49,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053478011] [2021-03-10 20:38:49,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:49,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:49,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:49,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053478011] [2021-03-10 20:38:49,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:49,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:49,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955285646] [2021-03-10 20:38:49,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:49,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:49,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:49,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:49,486 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) [2021-03-10 20:38:49,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:49,616 INFO L93 Difference]: Finished difference Result 1680 states and 5059 transitions. [2021-03-10 20:38:49,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:49,616 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 [2021-03-10 20:38:49,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:49,618 INFO L225 Difference]: With dead ends: 1680 [2021-03-10 20:38:49,618 INFO L226 Difference]: Without dead ends: 1585 [2021-03-10 20:38:49,618 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:49,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2021-03-10 20:38:49,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1362. [2021-03-10 20:38:49,631 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) [2021-03-10 20:38:49,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 4144 transitions. [2021-03-10 20:38:49,633 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 4144 transitions. Word has length 26 [2021-03-10 20:38:49,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:49,633 INFO L480 AbstractCegarLoop]: Abstraction has 1362 states and 4144 transitions. [2021-03-10 20:38:49,633 INFO L481 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) [2021-03-10 20:38:49,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 4144 transitions. [2021-03-10 20:38:49,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:49,635 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:49,635 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:49,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-03-10 20:38:49,635 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:49,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:49,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1571020596, now seen corresponding path program 58 times [2021-03-10 20:38:49,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:49,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764700189] [2021-03-10 20:38:49,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:49,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:49,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764700189] [2021-03-10 20:38:49,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:49,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:49,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842236861] [2021-03-10 20:38:49,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:49,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:49,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:49,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:49,681 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) [2021-03-10 20:38:49,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:49,818 INFO L93 Difference]: Finished difference Result 1581 states and 4769 transitions. [2021-03-10 20:38:49,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:49,819 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 [2021-03-10 20:38:49,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:49,821 INFO L225 Difference]: With dead ends: 1581 [2021-03-10 20:38:49,821 INFO L226 Difference]: Without dead ends: 1490 [2021-03-10 20:38:49,821 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:49,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2021-03-10 20:38:49,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1345. [2021-03-10 20:38:49,838 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) [2021-03-10 20:38:49,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 4092 transitions. [2021-03-10 20:38:49,840 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 4092 transitions. Word has length 26 [2021-03-10 20:38:49,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:49,840 INFO L480 AbstractCegarLoop]: Abstraction has 1345 states and 4092 transitions. [2021-03-10 20:38:49,840 INFO L481 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) [2021-03-10 20:38:49,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 4092 transitions. [2021-03-10 20:38:49,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:49,842 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:49,842 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:49,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-03-10 20:38:49,842 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:49,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:49,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1824705716, now seen corresponding path program 59 times [2021-03-10 20:38:49,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:49,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510508311] [2021-03-10 20:38:49,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:49,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:49,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510508311] [2021-03-10 20:38:49,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:49,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:49,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129555885] [2021-03-10 20:38:49,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:49,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:49,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:49,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:49,909 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) [2021-03-10 20:38:50,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:50,111 INFO L93 Difference]: Finished difference Result 1471 states and 4427 transitions. [2021-03-10 20:38:50,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:50,111 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:50,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:50,113 INFO L225 Difference]: With dead ends: 1471 [2021-03-10 20:38:50,113 INFO L226 Difference]: Without dead ends: 1392 [2021-03-10 20:38:50,114 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:50,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2021-03-10 20:38:50,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1357. [2021-03-10 20:38:50,126 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) [2021-03-10 20:38:50,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 4126 transitions. [2021-03-10 20:38:50,128 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 4126 transitions. Word has length 26 [2021-03-10 20:38:50,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:50,128 INFO L480 AbstractCegarLoop]: Abstraction has 1357 states and 4126 transitions. [2021-03-10 20:38:50,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:50,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 4126 transitions. [2021-03-10 20:38:50,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:50,130 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:50,130 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:50,130 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-03-10 20:38:50,130 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:50,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:50,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1600816972, now seen corresponding path program 60 times [2021-03-10 20:38:50,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:50,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824201298] [2021-03-10 20:38:50,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:50,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:50,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824201298] [2021-03-10 20:38:50,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:50,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:50,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784431205] [2021-03-10 20:38:50,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:50,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:50,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:50,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:50,189 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) [2021-03-10 20:38:50,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:50,368 INFO L93 Difference]: Finished difference Result 1521 states and 4567 transitions. [2021-03-10 20:38:50,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:50,369 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:50,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:50,370 INFO L225 Difference]: With dead ends: 1521 [2021-03-10 20:38:50,370 INFO L226 Difference]: Without dead ends: 1426 [2021-03-10 20:38:50,371 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:50,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2021-03-10 20:38:50,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1365. [2021-03-10 20:38:50,383 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) [2021-03-10 20:38:50,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 4154 transitions. [2021-03-10 20:38:50,385 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 4154 transitions. Word has length 26 [2021-03-10 20:38:50,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:50,385 INFO L480 AbstractCegarLoop]: Abstraction has 1365 states and 4154 transitions. [2021-03-10 20:38:50,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:50,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 4154 transitions. [2021-03-10 20:38:50,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:50,387 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:50,387 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:50,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-03-10 20:38:50,387 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:50,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:50,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1225439094, now seen corresponding path program 61 times [2021-03-10 20:38:50,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:50,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526936785] [2021-03-10 20:38:50,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:50,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:50,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526936785] [2021-03-10 20:38:50,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:50,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:50,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051505850] [2021-03-10 20:38:50,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:50,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:50,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:50,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:50,454 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) [2021-03-10 20:38:50,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:50,654 INFO L93 Difference]: Finished difference Result 1567 states and 4715 transitions. [2021-03-10 20:38:50,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:50,655 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:50,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:50,657 INFO L225 Difference]: With dead ends: 1567 [2021-03-10 20:38:50,657 INFO L226 Difference]: Without dead ends: 1488 [2021-03-10 20:38:50,657 INFO L775 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 [2021-03-10 20:38:50,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2021-03-10 20:38:50,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1372. [2021-03-10 20:38:50,670 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) [2021-03-10 20:38:50,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 4173 transitions. [2021-03-10 20:38:50,672 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 4173 transitions. Word has length 26 [2021-03-10 20:38:50,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:50,672 INFO L480 AbstractCegarLoop]: Abstraction has 1372 states and 4173 transitions. [2021-03-10 20:38:50,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:50,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 4173 transitions. [2021-03-10 20:38:50,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:50,673 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:50,673 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:50,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-03-10 20:38:50,674 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:50,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:50,674 INFO L82 PathProgramCache]: Analyzing trace with hash 652041818, now seen corresponding path program 62 times [2021-03-10 20:38:50,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:50,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223739173] [2021-03-10 20:38:50,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:50,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:50,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223739173] [2021-03-10 20:38:50,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:50,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:50,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352800920] [2021-03-10 20:38:50,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:50,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:50,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:50,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:50,740 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) [2021-03-10 20:38:50,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:50,906 INFO L93 Difference]: Finished difference Result 1591 states and 4779 transitions. [2021-03-10 20:38:50,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:50,906 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 [2021-03-10 20:38:50,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:50,908 INFO L225 Difference]: With dead ends: 1591 [2021-03-10 20:38:50,908 INFO L226 Difference]: Without dead ends: 1496 [2021-03-10 20:38:50,908 INFO L775 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 [2021-03-10 20:38:50,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-03-10 20:38:50,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1377. [2021-03-10 20:38:50,921 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) [2021-03-10 20:38:50,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 4190 transitions. [2021-03-10 20:38:50,923 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 4190 transitions. Word has length 26 [2021-03-10 20:38:50,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:50,923 INFO L480 AbstractCegarLoop]: Abstraction has 1377 states and 4190 transitions. [2021-03-10 20:38:50,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:50,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 4190 transitions. [2021-03-10 20:38:50,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:50,925 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:50,925 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:50,925 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-03-10 20:38:50,925 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:50,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:50,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1238592666, now seen corresponding path program 63 times [2021-03-10 20:38:50,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:50,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311314222] [2021-03-10 20:38:50,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:50,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:50,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311314222] [2021-03-10 20:38:50,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:50,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:50,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546686069] [2021-03-10 20:38:50,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:50,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:50,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:50,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:50,987 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) [2021-03-10 20:38:51,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:51,163 INFO L93 Difference]: Finished difference Result 1579 states and 4742 transitions. [2021-03-10 20:38:51,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:51,163 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 [2021-03-10 20:38:51,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:51,165 INFO L225 Difference]: With dead ends: 1579 [2021-03-10 20:38:51,165 INFO L226 Difference]: Without dead ends: 1491 [2021-03-10 20:38:51,165 INFO L775 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 [2021-03-10 20:38:51,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2021-03-10 20:38:51,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1383. [2021-03-10 20:38:51,178 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) [2021-03-10 20:38:51,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 4209 transitions. [2021-03-10 20:38:51,180 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 4209 transitions. Word has length 26 [2021-03-10 20:38:51,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:51,180 INFO L480 AbstractCegarLoop]: Abstraction has 1383 states and 4209 transitions. [2021-03-10 20:38:51,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:51,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 4209 transitions. [2021-03-10 20:38:51,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:51,181 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:51,181 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:51,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-03-10 20:38:51,181 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:51,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:51,182 INFO L82 PathProgramCache]: Analyzing trace with hash 526524824, now seen corresponding path program 64 times [2021-03-10 20:38:51,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:51,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89943192] [2021-03-10 20:38:51,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:51,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:51,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89943192] [2021-03-10 20:38:51,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:51,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:51,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973489034] [2021-03-10 20:38:51,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:51,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:51,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:51,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:51,242 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) [2021-03-10 20:38:51,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:51,405 INFO L93 Difference]: Finished difference Result 1558 states and 4681 transitions. [2021-03-10 20:38:51,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:51,405 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:51,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:51,407 INFO L225 Difference]: With dead ends: 1558 [2021-03-10 20:38:51,407 INFO L226 Difference]: Without dead ends: 1464 [2021-03-10 20:38:51,407 INFO L775 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 [2021-03-10 20:38:51,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-03-10 20:38:51,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1385. [2021-03-10 20:38:51,420 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) [2021-03-10 20:38:51,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 4217 transitions. [2021-03-10 20:38:51,421 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 4217 transitions. Word has length 26 [2021-03-10 20:38:51,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:51,422 INFO L480 AbstractCegarLoop]: Abstraction has 1385 states and 4217 transitions. [2021-03-10 20:38:51,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:51,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 4217 transitions. [2021-03-10 20:38:51,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:51,423 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:51,423 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:51,423 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-03-10 20:38:51,423 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:51,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:51,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1617897750, now seen corresponding path program 65 times [2021-03-10 20:38:51,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:51,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982056683] [2021-03-10 20:38:51,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:51,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:51,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982056683] [2021-03-10 20:38:51,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:51,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:51,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930544563] [2021-03-10 20:38:51,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:51,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:51,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:51,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:51,483 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) [2021-03-10 20:38:51,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:51,648 INFO L93 Difference]: Finished difference Result 1534 states and 4620 transitions. [2021-03-10 20:38:51,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:51,648 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 [2021-03-10 20:38:51,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:51,650 INFO L225 Difference]: With dead ends: 1534 [2021-03-10 20:38:51,650 INFO L226 Difference]: Without dead ends: 1455 [2021-03-10 20:38:51,650 INFO L775 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 [2021-03-10 20:38:51,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-03-10 20:38:51,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1391. [2021-03-10 20:38:51,662 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) [2021-03-10 20:38:51,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 4240 transitions. [2021-03-10 20:38:51,664 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 4240 transitions. Word has length 26 [2021-03-10 20:38:51,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:51,664 INFO L480 AbstractCegarLoop]: Abstraction has 1391 states and 4240 transitions. [2021-03-10 20:38:51,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:51,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 4240 transitions. [2021-03-10 20:38:51,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:51,666 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:51,666 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:51,666 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-03-10 20:38:51,666 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:51,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:51,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1807624938, now seen corresponding path program 66 times [2021-03-10 20:38:51,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:51,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195035776] [2021-03-10 20:38:51,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:51,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:51,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195035776] [2021-03-10 20:38:51,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:51,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:51,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475387454] [2021-03-10 20:38:51,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:51,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:51,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:51,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:51,732 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) [2021-03-10 20:38:51,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:51,901 INFO L93 Difference]: Finished difference Result 1569 states and 4729 transitions. [2021-03-10 20:38:51,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:51,901 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:51,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:51,903 INFO L225 Difference]: With dead ends: 1569 [2021-03-10 20:38:51,903 INFO L226 Difference]: Without dead ends: 1474 [2021-03-10 20:38:51,903 INFO L775 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 [2021-03-10 20:38:51,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-03-10 20:38:51,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1400. [2021-03-10 20:38:51,916 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) [2021-03-10 20:38:51,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 4271 transitions. [2021-03-10 20:38:51,918 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 4271 transitions. Word has length 26 [2021-03-10 20:38:51,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:51,918 INFO L480 AbstractCegarLoop]: Abstraction has 1400 states and 4271 transitions. [2021-03-10 20:38:51,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:51,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 4271 transitions. [2021-03-10 20:38:51,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:51,919 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:51,919 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:51,919 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-03-10 20:38:51,919 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:51,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:51,919 INFO L82 PathProgramCache]: Analyzing trace with hash 113058932, now seen corresponding path program 67 times [2021-03-10 20:38:51,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:51,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462613730] [2021-03-10 20:38:51,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:51,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:51,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462613730] [2021-03-10 20:38:51,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:51,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:51,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034797468] [2021-03-10 20:38:51,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:51,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:51,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:51,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:51,982 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) [2021-03-10 20:38:52,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:52,182 INFO L93 Difference]: Finished difference Result 1559 states and 4705 transitions. [2021-03-10 20:38:52,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:52,183 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:52,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:52,184 INFO L225 Difference]: With dead ends: 1559 [2021-03-10 20:38:52,184 INFO L226 Difference]: Without dead ends: 1474 [2021-03-10 20:38:52,185 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:52,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-03-10 20:38:52,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1404. [2021-03-10 20:38:52,197 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) [2021-03-10 20:38:52,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 4280 transitions. [2021-03-10 20:38:52,199 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 4280 transitions. Word has length 26 [2021-03-10 20:38:52,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:52,199 INFO L480 AbstractCegarLoop]: Abstraction has 1404 states and 4280 transitions. [2021-03-10 20:38:52,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:52,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 4280 transitions. [2021-03-10 20:38:52,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:52,201 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:52,201 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:52,201 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-03-10 20:38:52,201 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:52,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:52,201 INFO L82 PathProgramCache]: Analyzing trace with hash -2061970672, now seen corresponding path program 68 times [2021-03-10 20:38:52,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:52,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251397891] [2021-03-10 20:38:52,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:52,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:52,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251397891] [2021-03-10 20:38:52,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:52,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:52,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863356348] [2021-03-10 20:38:52,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:52,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:52,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:52,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:52,262 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) [2021-03-10 20:38:52,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:52,422 INFO L93 Difference]: Finished difference Result 1599 states and 4818 transitions. [2021-03-10 20:38:52,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:52,422 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:52,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:52,424 INFO L225 Difference]: With dead ends: 1599 [2021-03-10 20:38:52,424 INFO L226 Difference]: Without dead ends: 1496 [2021-03-10 20:38:52,424 INFO L775 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 [2021-03-10 20:38:52,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-03-10 20:38:52,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1402. [2021-03-10 20:38:52,437 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) [2021-03-10 20:38:52,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 4280 transitions. [2021-03-10 20:38:52,438 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 4280 transitions. Word has length 26 [2021-03-10 20:38:52,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:52,439 INFO L480 AbstractCegarLoop]: Abstraction has 1402 states and 4280 transitions. [2021-03-10 20:38:52,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:52,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 4280 transitions. [2021-03-10 20:38:52,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:52,440 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:52,440 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:52,440 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-03-10 20:38:52,440 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:52,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:52,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1557110056, now seen corresponding path program 69 times [2021-03-10 20:38:52,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:52,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302115064] [2021-03-10 20:38:52,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:52,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:52,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302115064] [2021-03-10 20:38:52,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:52,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:52,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448994372] [2021-03-10 20:38:52,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:52,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:52,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:52,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:52,504 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) [2021-03-10 20:38:52,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:52,682 INFO L93 Difference]: Finished difference Result 1713 states and 5194 transitions. [2021-03-10 20:38:52,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:52,682 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:52,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:52,684 INFO L225 Difference]: With dead ends: 1713 [2021-03-10 20:38:52,684 INFO L226 Difference]: Without dead ends: 1634 [2021-03-10 20:38:52,684 INFO L775 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 [2021-03-10 20:38:52,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2021-03-10 20:38:52,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1411. [2021-03-10 20:38:52,697 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) [2021-03-10 20:38:52,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 4315 transitions. [2021-03-10 20:38:52,699 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 4315 transitions. Word has length 26 [2021-03-10 20:38:52,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:52,699 INFO L480 AbstractCegarLoop]: Abstraction has 1411 states and 4315 transitions. [2021-03-10 20:38:52,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:52,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 4315 transitions. [2021-03-10 20:38:52,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:52,701 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:52,701 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:52,701 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-03-10 20:38:52,701 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:52,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:52,701 INFO L82 PathProgramCache]: Analyzing trace with hash -2130507332, now seen corresponding path program 70 times [2021-03-10 20:38:52,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:52,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932882494] [2021-03-10 20:38:52,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:52,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:52,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932882494] [2021-03-10 20:38:52,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:52,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:52,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551818002] [2021-03-10 20:38:52,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:52,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:52,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:52,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:52,761 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) [2021-03-10 20:38:52,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:52,926 INFO L93 Difference]: Finished difference Result 1734 states and 5229 transitions. [2021-03-10 20:38:52,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:52,927 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:52,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:52,929 INFO L225 Difference]: With dead ends: 1734 [2021-03-10 20:38:52,929 INFO L226 Difference]: Without dead ends: 1639 [2021-03-10 20:38:52,929 INFO L775 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 [2021-03-10 20:38:52,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-03-10 20:38:52,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1415. [2021-03-10 20:38:52,942 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) [2021-03-10 20:38:52,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 4326 transitions. [2021-03-10 20:38:52,944 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 4326 transitions. Word has length 26 [2021-03-10 20:38:52,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:52,944 INFO L480 AbstractCegarLoop]: Abstraction has 1415 states and 4326 transitions. [2021-03-10 20:38:52,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:52,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 4326 transitions. [2021-03-10 20:38:52,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:52,945 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:52,945 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:52,945 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-03-10 20:38:52,945 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:52,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:52,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1345712694, now seen corresponding path program 71 times [2021-03-10 20:38:52,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:52,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778735597] [2021-03-10 20:38:52,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:53,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:53,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778735597] [2021-03-10 20:38:53,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:53,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:53,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149751829] [2021-03-10 20:38:53,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:53,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:53,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:53,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:53,024 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) [2021-03-10 20:38:53,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:53,226 INFO L93 Difference]: Finished difference Result 1641 states and 4975 transitions. [2021-03-10 20:38:53,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:53,226 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:53,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:53,228 INFO L225 Difference]: With dead ends: 1641 [2021-03-10 20:38:53,228 INFO L226 Difference]: Without dead ends: 1551 [2021-03-10 20:38:53,229 INFO L775 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 [2021-03-10 20:38:53,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2021-03-10 20:38:53,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1409. [2021-03-10 20:38:53,242 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) [2021-03-10 20:38:53,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 4311 transitions. [2021-03-10 20:38:53,243 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 4311 transitions. Word has length 26 [2021-03-10 20:38:53,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:53,244 INFO L480 AbstractCegarLoop]: Abstraction has 1409 states and 4311 transitions. [2021-03-10 20:38:53,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:53,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 4311 transitions. [2021-03-10 20:38:53,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:53,245 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:53,245 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:53,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-03-10 20:38:53,245 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:53,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:53,245 INFO L82 PathProgramCache]: Analyzing trace with hash 970699354, now seen corresponding path program 72 times [2021-03-10 20:38:53,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:53,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896663560] [2021-03-10 20:38:53,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:53,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:53,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896663560] [2021-03-10 20:38:53,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:53,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:53,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240263573] [2021-03-10 20:38:53,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:53,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:53,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:53,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:53,295 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) [2021-03-10 20:38:53,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:53,428 INFO L93 Difference]: Finished difference Result 1735 states and 5254 transitions. [2021-03-10 20:38:53,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:53,428 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 [2021-03-10 20:38:53,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:53,430 INFO L225 Difference]: With dead ends: 1735 [2021-03-10 20:38:53,430 INFO L226 Difference]: Without dead ends: 1656 [2021-03-10 20:38:53,430 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:53,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2021-03-10 20:38:53,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1445. [2021-03-10 20:38:53,443 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) [2021-03-10 20:38:53,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 4418 transitions. [2021-03-10 20:38:53,445 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 4418 transitions. Word has length 26 [2021-03-10 20:38:53,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:53,445 INFO L480 AbstractCegarLoop]: Abstraction has 1445 states and 4418 transitions. [2021-03-10 20:38:53,445 INFO L481 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) [2021-03-10 20:38:53,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 4418 transitions. [2021-03-10 20:38:53,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:53,446 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:53,446 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:53,446 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-03-10 20:38:53,446 INFO L428 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:53,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:53,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1840143962, now seen corresponding path program 73 times [2021-03-10 20:38:53,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:53,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749278311] [2021-03-10 20:38:53,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:53,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:53,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749278311] [2021-03-10 20:38:53,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:53,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:53,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800841088] [2021-03-10 20:38:53,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:53,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:53,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:53,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:53,515 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) [2021-03-10 20:38:53,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:53,677 INFO L93 Difference]: Finished difference Result 1792 states and 5392 transitions. [2021-03-10 20:38:53,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:53,677 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:53,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:53,679 INFO L225 Difference]: With dead ends: 1792 [2021-03-10 20:38:53,679 INFO L226 Difference]: Without dead ends: 1611 [2021-03-10 20:38:53,679 INFO L775 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 [2021-03-10 20:38:53,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2021-03-10 20:38:53,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1435. [2021-03-10 20:38:53,692 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) [2021-03-10 20:38:53,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 4394 transitions. [2021-03-10 20:38:53,694 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 4394 transitions. Word has length 26 [2021-03-10 20:38:53,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:53,694 INFO L480 AbstractCegarLoop]: Abstraction has 1435 states and 4394 transitions. [2021-03-10 20:38:53,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:53,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 4394 transitions. [2021-03-10 20:38:53,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:53,695 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:53,695 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:53,695 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-03-10 20:38:53,696 INFO L428 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:53,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:53,696 INFO L82 PathProgramCache]: Analyzing trace with hash -747041416, now seen corresponding path program 74 times [2021-03-10 20:38:53,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:53,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852219753] [2021-03-10 20:38:53,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:53,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:53,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852219753] [2021-03-10 20:38:53,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:53,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:53,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156963385] [2021-03-10 20:38:53,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:53,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:53,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:53,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:53,752 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) [2021-03-10 20:38:53,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:53,917 INFO L93 Difference]: Finished difference Result 1663 states and 5025 transitions. [2021-03-10 20:38:53,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:53,918 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:53,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:53,919 INFO L225 Difference]: With dead ends: 1663 [2021-03-10 20:38:53,920 INFO L226 Difference]: Without dead ends: 1584 [2021-03-10 20:38:53,920 INFO L775 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 [2021-03-10 20:38:53,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-03-10 20:38:53,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1437. [2021-03-10 20:38:53,938 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) [2021-03-10 20:38:53,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 4401 transitions. [2021-03-10 20:38:53,940 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 4401 transitions. Word has length 26 [2021-03-10 20:38:53,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:53,940 INFO L480 AbstractCegarLoop]: Abstraction has 1437 states and 4401 transitions. [2021-03-10 20:38:53,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:53,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 4401 transitions. [2021-03-10 20:38:53,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:53,942 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:53,942 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:53,942 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-03-10 20:38:53,942 INFO L428 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:53,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:53,942 INFO L82 PathProgramCache]: Analyzing trace with hash 122403192, now seen corresponding path program 75 times [2021-03-10 20:38:53,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:53,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048696016] [2021-03-10 20:38:53,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:53,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:53,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048696016] [2021-03-10 20:38:53,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:53,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:53,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494377469] [2021-03-10 20:38:53,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:53,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:54,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:54,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:54,000 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) [2021-03-10 20:38:54,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:54,169 INFO L93 Difference]: Finished difference Result 1626 states and 4884 transitions. [2021-03-10 20:38:54,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:54,170 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:54,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:54,171 INFO L225 Difference]: With dead ends: 1626 [2021-03-10 20:38:54,172 INFO L226 Difference]: Without dead ends: 1531 [2021-03-10 20:38:54,172 INFO L775 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 [2021-03-10 20:38:54,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2021-03-10 20:38:54,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1451. [2021-03-10 20:38:54,185 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) [2021-03-10 20:38:54,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 4438 transitions. [2021-03-10 20:38:54,186 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 4438 transitions. Word has length 26 [2021-03-10 20:38:54,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:54,187 INFO L480 AbstractCegarLoop]: Abstraction has 1451 states and 4438 transitions. [2021-03-10 20:38:54,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:54,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 4438 transitions. [2021-03-10 20:38:54,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:54,188 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:54,188 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:54,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-03-10 20:38:54,188 INFO L428 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:54,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:54,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1919705314, now seen corresponding path program 76 times [2021-03-10 20:38:54,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:54,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242290704] [2021-03-10 20:38:54,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:54,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:54,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242290704] [2021-03-10 20:38:54,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:54,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:54,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876442710] [2021-03-10 20:38:54,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:54,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:54,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:54,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:54,237 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) [2021-03-10 20:38:54,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:54,371 INFO L93 Difference]: Finished difference Result 1742 states and 5269 transitions. [2021-03-10 20:38:54,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:54,371 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 [2021-03-10 20:38:54,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:54,373 INFO L225 Difference]: With dead ends: 1742 [2021-03-10 20:38:54,373 INFO L226 Difference]: Without dead ends: 1653 [2021-03-10 20:38:54,373 INFO L775 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 [2021-03-10 20:38:54,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2021-03-10 20:38:54,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1461. [2021-03-10 20:38:54,386 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) [2021-03-10 20:38:54,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 4467 transitions. [2021-03-10 20:38:54,388 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 4467 transitions. Word has length 26 [2021-03-10 20:38:54,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:54,389 INFO L480 AbstractCegarLoop]: Abstraction has 1461 states and 4467 transitions. [2021-03-10 20:38:54,389 INFO L481 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) [2021-03-10 20:38:54,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 4467 transitions. [2021-03-10 20:38:54,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:54,390 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:54,390 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:54,390 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-03-10 20:38:54,390 INFO L428 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:54,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:54,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1333154466, now seen corresponding path program 77 times [2021-03-10 20:38:54,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:54,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478152962] [2021-03-10 20:38:54,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:54,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:54,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478152962] [2021-03-10 20:38:54,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:54,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:54,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715129609] [2021-03-10 20:38:54,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:54,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:54,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:54,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:54,451 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) [2021-03-10 20:38:54,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:54,619 INFO L93 Difference]: Finished difference Result 1678 states and 5043 transitions. [2021-03-10 20:38:54,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:54,620 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:54,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:54,621 INFO L225 Difference]: With dead ends: 1678 [2021-03-10 20:38:54,621 INFO L226 Difference]: Without dead ends: 1590 [2021-03-10 20:38:54,622 INFO L775 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 [2021-03-10 20:38:54,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2021-03-10 20:38:54,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1461. [2021-03-10 20:38:54,635 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) [2021-03-10 20:38:54,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 4467 transitions. [2021-03-10 20:38:54,637 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 4467 transitions. Word has length 26 [2021-03-10 20:38:54,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:54,637 INFO L480 AbstractCegarLoop]: Abstraction has 1461 states and 4467 transitions. [2021-03-10 20:38:54,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:54,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 4467 transitions. [2021-03-10 20:38:54,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:54,638 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:54,638 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:54,638 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-03-10 20:38:54,638 INFO L428 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:54,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:54,639 INFO L82 PathProgramCache]: Analyzing trace with hash -2045222308, now seen corresponding path program 78 times [2021-03-10 20:38:54,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:54,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934842720] [2021-03-10 20:38:54,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:54,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:54,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934842720] [2021-03-10 20:38:54,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:54,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:54,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890805018] [2021-03-10 20:38:54,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:54,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:54,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:54,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:54,698 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) [2021-03-10 20:38:54,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:54,868 INFO L93 Difference]: Finished difference Result 1816 states and 5475 transitions. [2021-03-10 20:38:54,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:54,868 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:54,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:54,870 INFO L225 Difference]: With dead ends: 1816 [2021-03-10 20:38:54,870 INFO L226 Difference]: Without dead ends: 1722 [2021-03-10 20:38:54,870 INFO L775 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 [2021-03-10 20:38:54,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2021-03-10 20:38:54,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1485. [2021-03-10 20:38:54,884 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) [2021-03-10 20:38:54,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 4546 transitions. [2021-03-10 20:38:54,886 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 4546 transitions. Word has length 26 [2021-03-10 20:38:54,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:54,886 INFO L480 AbstractCegarLoop]: Abstraction has 1485 states and 4546 transitions. [2021-03-10 20:38:54,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:54,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 4546 transitions. [2021-03-10 20:38:54,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:54,887 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:54,887 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:54,887 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-03-10 20:38:54,887 INFO L428 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:54,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:54,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1286512978, now seen corresponding path program 79 times [2021-03-10 20:38:54,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:54,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570049200] [2021-03-10 20:38:54,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:54,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:54,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570049200] [2021-03-10 20:38:54,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:54,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:54,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030123239] [2021-03-10 20:38:54,939 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:54,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:54,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:54,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:54,940 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) [2021-03-10 20:38:55,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:55,084 INFO L93 Difference]: Finished difference Result 1851 states and 5576 transitions. [2021-03-10 20:38:55,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:55,085 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 [2021-03-10 20:38:55,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:55,086 INFO L225 Difference]: With dead ends: 1851 [2021-03-10 20:38:55,086 INFO L226 Difference]: Without dead ends: 1679 [2021-03-10 20:38:55,087 INFO L775 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 [2021-03-10 20:38:55,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2021-03-10 20:38:55,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 1453. [2021-03-10 20:38:55,100 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) [2021-03-10 20:38:55,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 4436 transitions. [2021-03-10 20:38:55,102 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 4436 transitions. Word has length 26 [2021-03-10 20:38:55,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:55,102 INFO L480 AbstractCegarLoop]: Abstraction has 1453 states and 4436 transitions. [2021-03-10 20:38:55,102 INFO L481 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) [2021-03-10 20:38:55,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 4436 transitions. [2021-03-10 20:38:55,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:55,103 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:55,103 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:55,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-03-10 20:38:55,104 INFO L428 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:55,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:55,104 INFO L82 PathProgramCache]: Analyzing trace with hash -292918668, now seen corresponding path program 80 times [2021-03-10 20:38:55,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:55,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304140587] [2021-03-10 20:38:55,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:55,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:55,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304140587] [2021-03-10 20:38:55,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:55,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:55,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207978405] [2021-03-10 20:38:55,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:55,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:55,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:55,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:55,175 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) [2021-03-10 20:38:55,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:55,337 INFO L93 Difference]: Finished difference Result 1732 states and 5178 transitions. [2021-03-10 20:38:55,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:55,338 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 [2021-03-10 20:38:55,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:55,339 INFO L225 Difference]: With dead ends: 1732 [2021-03-10 20:38:55,339 INFO L226 Difference]: Without dead ends: 1593 [2021-03-10 20:38:55,340 INFO L775 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 [2021-03-10 20:38:55,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2021-03-10 20:38:55,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1443. [2021-03-10 20:38:55,352 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) [2021-03-10 20:38:55,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 4396 transitions. [2021-03-10 20:38:55,354 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 4396 transitions. Word has length 26 [2021-03-10 20:38:55,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:55,354 INFO L480 AbstractCegarLoop]: Abstraction has 1443 states and 4396 transitions. [2021-03-10 20:38:55,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:55,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 4396 transitions. [2021-03-10 20:38:55,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:55,356 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:55,356 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:55,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-03-10 20:38:55,356 INFO L428 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:55,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:55,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1145380296, now seen corresponding path program 81 times [2021-03-10 20:38:55,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:55,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800991833] [2021-03-10 20:38:55,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:55,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:55,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800991833] [2021-03-10 20:38:55,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:55,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:38:55,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369752324] [2021-03-10 20:38:55,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:38:55,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:55,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:38:55,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:38:55,415 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) [2021-03-10 20:38:55,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:55,559 INFO L93 Difference]: Finished difference Result 1745 states and 5234 transitions. [2021-03-10 20:38:55,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:38:55,559 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 [2021-03-10 20:38:55,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:55,561 INFO L225 Difference]: With dead ends: 1745 [2021-03-10 20:38:55,561 INFO L226 Difference]: Without dead ends: 1660 [2021-03-10 20:38:55,561 INFO L775 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 [2021-03-10 20:38:55,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2021-03-10 20:38:55,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1481. [2021-03-10 20:38:55,583 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) [2021-03-10 20:38:55,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 4515 transitions. [2021-03-10 20:38:55,585 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 4515 transitions. Word has length 26 [2021-03-10 20:38:55,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:55,585 INFO L480 AbstractCegarLoop]: Abstraction has 1481 states and 4515 transitions. [2021-03-10 20:38:55,585 INFO L481 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) [2021-03-10 20:38:55,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 4515 transitions. [2021-03-10 20:38:55,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:55,586 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:55,586 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:55,586 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-03-10 20:38:55,587 INFO L428 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:55,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:55,587 INFO L82 PathProgramCache]: Analyzing trace with hash -275935688, now seen corresponding path program 82 times [2021-03-10 20:38:55,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:55,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194552421] [2021-03-10 20:38:55,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:55,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194552421] [2021-03-10 20:38:55,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:55,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:55,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117344008] [2021-03-10 20:38:55,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:55,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:55,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:55,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:55,650 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) [2021-03-10 20:38:55,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:55,811 INFO L93 Difference]: Finished difference Result 1788 states and 5355 transitions. [2021-03-10 20:38:55,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:55,811 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:55,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:55,813 INFO L225 Difference]: With dead ends: 1788 [2021-03-10 20:38:55,813 INFO L226 Difference]: Without dead ends: 1595 [2021-03-10 20:38:55,813 INFO L775 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 [2021-03-10 20:38:55,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2021-03-10 20:38:55,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1441. [2021-03-10 20:38:55,835 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) [2021-03-10 20:38:55,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 4389 transitions. [2021-03-10 20:38:55,838 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 4389 transitions. Word has length 26 [2021-03-10 20:38:55,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:55,839 INFO L480 AbstractCegarLoop]: Abstraction has 1441 states and 4389 transitions. [2021-03-10 20:38:55,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:55,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 4389 transitions. [2021-03-10 20:38:55,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:55,840 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:55,840 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:55,840 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-03-10 20:38:55,840 INFO L428 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:55,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:55,840 INFO L82 PathProgramCache]: Analyzing trace with hash -263995784, now seen corresponding path program 83 times [2021-03-10 20:38:55,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:55,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969113574] [2021-03-10 20:38:55,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:55,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969113574] [2021-03-10 20:38:55,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:55,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:55,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411338798] [2021-03-10 20:38:55,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:55,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:55,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:55,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:55,908 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) [2021-03-10 20:38:56,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:56,071 INFO L93 Difference]: Finished difference Result 1658 states and 4979 transitions. [2021-03-10 20:38:56,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:56,072 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 [2021-03-10 20:38:56,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:56,073 INFO L225 Difference]: With dead ends: 1658 [2021-03-10 20:38:56,073 INFO L226 Difference]: Without dead ends: 1573 [2021-03-10 20:38:56,074 INFO L775 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 [2021-03-10 20:38:56,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-03-10 20:38:56,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1444. [2021-03-10 20:38:56,086 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) [2021-03-10 20:38:56,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 4397 transitions. [2021-03-10 20:38:56,088 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 4397 transitions. Word has length 26 [2021-03-10 20:38:56,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:56,088 INFO L480 AbstractCegarLoop]: Abstraction has 1444 states and 4397 transitions. [2021-03-10 20:38:56,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:56,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 4397 transitions. [2021-03-10 20:38:56,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:56,090 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:56,090 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:56,090 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-03-10 20:38:56,090 INFO L428 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:56,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:56,090 INFO L82 PathProgramCache]: Analyzing trace with hash 605448824, now seen corresponding path program 84 times [2021-03-10 20:38:56,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:56,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712228966] [2021-03-10 20:38:56,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:56,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:56,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712228966] [2021-03-10 20:38:56,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:56,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:56,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291228045] [2021-03-10 20:38:56,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:56,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:56,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:56,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:56,151 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) [2021-03-10 20:38:56,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:56,316 INFO L93 Difference]: Finished difference Result 1729 states and 5190 transitions. [2021-03-10 20:38:56,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:56,316 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 [2021-03-10 20:38:56,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:56,318 INFO L225 Difference]: With dead ends: 1729 [2021-03-10 20:38:56,318 INFO L226 Difference]: Without dead ends: 1634 [2021-03-10 20:38:56,318 INFO L775 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 [2021-03-10 20:38:56,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2021-03-10 20:38:56,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1464. [2021-03-10 20:38:56,331 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) [2021-03-10 20:38:56,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 4456 transitions. [2021-03-10 20:38:56,333 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 4456 transitions. Word has length 26 [2021-03-10 20:38:56,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:56,333 INFO L480 AbstractCegarLoop]: Abstraction has 1464 states and 4456 transitions. [2021-03-10 20:38:56,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:56,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 4456 transitions. [2021-03-10 20:38:56,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:56,335 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:56,335 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:56,335 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-03-10 20:38:56,335 INFO L428 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:56,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:56,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1417651412, now seen corresponding path program 85 times [2021-03-10 20:38:56,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:56,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233194212] [2021-03-10 20:38:56,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:56,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:56,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233194212] [2021-03-10 20:38:56,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:56,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:56,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855916023] [2021-03-10 20:38:56,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:56,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:56,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:56,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:56,390 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) [2021-03-10 20:38:56,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:56,552 INFO L93 Difference]: Finished difference Result 1739 states and 5230 transitions. [2021-03-10 20:38:56,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:56,552 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:56,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:56,554 INFO L225 Difference]: With dead ends: 1739 [2021-03-10 20:38:56,554 INFO L226 Difference]: Without dead ends: 1609 [2021-03-10 20:38:56,554 INFO L775 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 [2021-03-10 20:38:56,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2021-03-10 20:38:56,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1469. [2021-03-10 20:38:56,567 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) [2021-03-10 20:38:56,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 4454 transitions. [2021-03-10 20:38:56,569 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 4454 transitions. Word has length 26 [2021-03-10 20:38:56,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:56,569 INFO L480 AbstractCegarLoop]: Abstraction has 1469 states and 4454 transitions. [2021-03-10 20:38:56,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:56,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 4454 transitions. [2021-03-10 20:38:56,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:56,570 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:56,571 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:56,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-03-10 20:38:56,571 INFO L428 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:56,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:56,571 INFO L82 PathProgramCache]: Analyzing trace with hash -472077802, now seen corresponding path program 86 times [2021-03-10 20:38:56,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:56,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592228284] [2021-03-10 20:38:56,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:56,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:56,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592228284] [2021-03-10 20:38:56,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:56,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:56,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991398379] [2021-03-10 20:38:56,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:56,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:56,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:56,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:56,636 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) [2021-03-10 20:38:56,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:56,838 INFO L93 Difference]: Finished difference Result 1598 states and 4788 transitions. [2021-03-10 20:38:56,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:56,838 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:56,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:56,840 INFO L225 Difference]: With dead ends: 1598 [2021-03-10 20:38:56,840 INFO L226 Difference]: Without dead ends: 1519 [2021-03-10 20:38:56,840 INFO L775 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 [2021-03-10 20:38:56,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2021-03-10 20:38:56,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1469. [2021-03-10 20:38:56,853 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) [2021-03-10 20:38:56,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 4454 transitions. [2021-03-10 20:38:56,855 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 4454 transitions. Word has length 26 [2021-03-10 20:38:56,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:56,855 INFO L480 AbstractCegarLoop]: Abstraction has 1469 states and 4454 transitions. [2021-03-10 20:38:56,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:56,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 4454 transitions. [2021-03-10 20:38:56,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:56,857 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:56,857 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:56,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-03-10 20:38:56,857 INFO L428 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:56,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:56,857 INFO L82 PathProgramCache]: Analyzing trace with hash 397366806, now seen corresponding path program 87 times [2021-03-10 20:38:56,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:56,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661279381] [2021-03-10 20:38:56,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:56,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:56,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661279381] [2021-03-10 20:38:56,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:56,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:56,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959185580] [2021-03-10 20:38:56,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:56,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:56,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:56,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:56,917 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) [2021-03-10 20:38:57,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:57,112 INFO L93 Difference]: Finished difference Result 1617 states and 4837 transitions. [2021-03-10 20:38:57,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:57,112 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:57,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:57,114 INFO L225 Difference]: With dead ends: 1617 [2021-03-10 20:38:57,114 INFO L226 Difference]: Without dead ends: 1522 [2021-03-10 20:38:57,114 INFO L775 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 [2021-03-10 20:38:57,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-03-10 20:38:57,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1471. [2021-03-10 20:38:57,128 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) [2021-03-10 20:38:57,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 4459 transitions. [2021-03-10 20:38:57,130 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 4459 transitions. Word has length 26 [2021-03-10 20:38:57,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:57,130 INFO L480 AbstractCegarLoop]: Abstraction has 1471 states and 4459 transitions. [2021-03-10 20:38:57,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:57,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 4459 transitions. [2021-03-10 20:38:57,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:57,131 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:57,131 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:57,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-03-10 20:38:57,132 INFO L428 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:57,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:57,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1071344424, now seen corresponding path program 88 times [2021-03-10 20:38:57,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:57,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006992763] [2021-03-10 20:38:57,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:57,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:57,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006992763] [2021-03-10 20:38:57,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:57,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:57,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442820629] [2021-03-10 20:38:57,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:57,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:57,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:57,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:57,192 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) [2021-03-10 20:38:57,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:57,383 INFO L93 Difference]: Finished difference Result 1682 states and 5045 transitions. [2021-03-10 20:38:57,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:57,384 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:57,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:57,385 INFO L225 Difference]: With dead ends: 1682 [2021-03-10 20:38:57,385 INFO L226 Difference]: Without dead ends: 1603 [2021-03-10 20:38:57,386 INFO L775 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 [2021-03-10 20:38:57,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2021-03-10 20:38:57,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1470. [2021-03-10 20:38:57,398 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) [2021-03-10 20:38:57,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4455 transitions. [2021-03-10 20:38:57,400 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4455 transitions. Word has length 26 [2021-03-10 20:38:57,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:57,400 INFO L480 AbstractCegarLoop]: Abstraction has 1470 states and 4455 transitions. [2021-03-10 20:38:57,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:57,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4455 transitions. [2021-03-10 20:38:57,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:57,402 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:57,402 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:57,402 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-03-10 20:38:57,402 INFO L428 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:57,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:57,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1644741700, now seen corresponding path program 89 times [2021-03-10 20:38:57,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:57,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778019341] [2021-03-10 20:38:57,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:57,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:57,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778019341] [2021-03-10 20:38:57,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:57,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:57,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285343026] [2021-03-10 20:38:57,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:57,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:57,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:57,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:57,468 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) [2021-03-10 20:38:57,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:57,661 INFO L93 Difference]: Finished difference Result 1669 states and 5007 transitions. [2021-03-10 20:38:57,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:57,662 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:57,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:57,664 INFO L225 Difference]: With dead ends: 1669 [2021-03-10 20:38:57,664 INFO L226 Difference]: Without dead ends: 1580 [2021-03-10 20:38:57,664 INFO L775 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 [2021-03-10 20:38:57,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2021-03-10 20:38:57,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1469. [2021-03-10 20:38:57,678 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) [2021-03-10 20:38:57,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 4449 transitions. [2021-03-10 20:38:57,680 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 4449 transitions. Word has length 26 [2021-03-10 20:38:57,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:57,680 INFO L480 AbstractCegarLoop]: Abstraction has 1469 states and 4449 transitions. [2021-03-10 20:38:57,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:57,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 4449 transitions. [2021-03-10 20:38:57,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:57,681 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:57,681 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:57,681 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-03-10 20:38:57,681 INFO L428 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:57,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:57,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1058190852, now seen corresponding path program 90 times [2021-03-10 20:38:57,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:57,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775631003] [2021-03-10 20:38:57,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:57,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:57,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775631003] [2021-03-10 20:38:57,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:57,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:57,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717198591] [2021-03-10 20:38:57,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:57,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:57,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:57,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:57,741 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) [2021-03-10 20:38:57,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:57,919 INFO L93 Difference]: Finished difference Result 1654 states and 4951 transitions. [2021-03-10 20:38:57,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:57,919 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:57,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:57,921 INFO L225 Difference]: With dead ends: 1654 [2021-03-10 20:38:57,921 INFO L226 Difference]: Without dead ends: 1566 [2021-03-10 20:38:57,921 INFO L775 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 [2021-03-10 20:38:57,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2021-03-10 20:38:57,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1470. [2021-03-10 20:38:57,934 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) [2021-03-10 20:38:57,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4453 transitions. [2021-03-10 20:38:57,936 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4453 transitions. Word has length 26 [2021-03-10 20:38:57,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:57,936 INFO L480 AbstractCegarLoop]: Abstraction has 1470 states and 4453 transitions. [2021-03-10 20:38:57,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:57,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4453 transitions. [2021-03-10 20:38:57,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:57,938 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:57,938 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:57,938 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-03-10 20:38:57,938 INFO L428 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:57,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:57,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1770258694, now seen corresponding path program 91 times [2021-03-10 20:38:57,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:57,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360848434] [2021-03-10 20:38:57,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:58,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:58,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360848434] [2021-03-10 20:38:58,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:58,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:58,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961613325] [2021-03-10 20:38:58,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:58,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:58,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:58,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:58,005 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) [2021-03-10 20:38:58,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:58,174 INFO L93 Difference]: Finished difference Result 1673 states and 4993 transitions. [2021-03-10 20:38:58,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:58,175 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:58,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:58,177 INFO L225 Difference]: With dead ends: 1673 [2021-03-10 20:38:58,177 INFO L226 Difference]: Without dead ends: 1579 [2021-03-10 20:38:58,177 INFO L775 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 [2021-03-10 20:38:58,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-03-10 20:38:58,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1475. [2021-03-10 20:38:58,189 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) [2021-03-10 20:38:58,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 4474 transitions. [2021-03-10 20:38:58,191 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 4474 transitions. Word has length 26 [2021-03-10 20:38:58,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:58,191 INFO L480 AbstractCegarLoop]: Abstraction has 1475 states and 4474 transitions. [2021-03-10 20:38:58,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:58,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 4474 transitions. [2021-03-10 20:38:58,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:58,193 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:58,193 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:58,193 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-03-10 20:38:58,193 INFO L428 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:58,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:58,193 INFO L82 PathProgramCache]: Analyzing trace with hash -678885768, now seen corresponding path program 92 times [2021-03-10 20:38:58,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:58,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461830152] [2021-03-10 20:38:58,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:58,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:58,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461830152] [2021-03-10 20:38:58,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:58,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:58,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030760653] [2021-03-10 20:38:58,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:58,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:58,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:58,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:58,255 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) [2021-03-10 20:38:58,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:58,428 INFO L93 Difference]: Finished difference Result 1627 states and 4876 transitions. [2021-03-10 20:38:58,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:58,429 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:58,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:58,430 INFO L225 Difference]: With dead ends: 1627 [2021-03-10 20:38:58,431 INFO L226 Difference]: Without dead ends: 1548 [2021-03-10 20:38:58,431 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:58,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2021-03-10 20:38:58,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1475. [2021-03-10 20:38:58,444 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) [2021-03-10 20:38:58,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 4474 transitions. [2021-03-10 20:38:58,446 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 4474 transitions. Word has length 26 [2021-03-10 20:38:58,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:58,446 INFO L480 AbstractCegarLoop]: Abstraction has 1475 states and 4474 transitions. [2021-03-10 20:38:58,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:58,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 4474 transitions. [2021-03-10 20:38:58,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:58,447 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:58,447 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:58,447 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-03-10 20:38:58,447 INFO L428 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:58,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:58,448 INFO L82 PathProgramCache]: Analyzing trace with hash 190558840, now seen corresponding path program 93 times [2021-03-10 20:38:58,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:58,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116566077] [2021-03-10 20:38:58,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:58,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:58,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116566077] [2021-03-10 20:38:58,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:58,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:58,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279785818] [2021-03-10 20:38:58,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:58,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:58,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:58,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:58,503 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) [2021-03-10 20:38:58,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:58,671 INFO L93 Difference]: Finished difference Result 1646 states and 4929 transitions. [2021-03-10 20:38:58,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:58,671 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:58,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:58,673 INFO L225 Difference]: With dead ends: 1646 [2021-03-10 20:38:58,673 INFO L226 Difference]: Without dead ends: 1551 [2021-03-10 20:38:58,673 INFO L775 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 [2021-03-10 20:38:58,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2021-03-10 20:38:58,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1478. [2021-03-10 20:38:58,686 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) [2021-03-10 20:38:58,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 4482 transitions. [2021-03-10 20:38:58,688 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 4482 transitions. Word has length 26 [2021-03-10 20:38:58,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:58,688 INFO L480 AbstractCegarLoop]: Abstraction has 1478 states and 4482 transitions. [2021-03-10 20:38:58,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:58,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 4482 transitions. [2021-03-10 20:38:58,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:58,689 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:58,689 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:58,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-03-10 20:38:58,690 INFO L428 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:58,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:58,690 INFO L82 PathProgramCache]: Analyzing trace with hash 2111242710, now seen corresponding path program 94 times [2021-03-10 20:38:58,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:58,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910792080] [2021-03-10 20:38:58,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:58,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:58,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910792080] [2021-03-10 20:38:58,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:58,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:58,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162364205] [2021-03-10 20:38:58,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:58,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:58,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:58,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:58,774 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) [2021-03-10 20:38:58,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:58,937 INFO L93 Difference]: Finished difference Result 1664 states and 4981 transitions. [2021-03-10 20:38:58,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:58,937 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 [2021-03-10 20:38:58,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:58,939 INFO L225 Difference]: With dead ends: 1664 [2021-03-10 20:38:58,939 INFO L226 Difference]: Without dead ends: 1579 [2021-03-10 20:38:58,939 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:58,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-03-10 20:38:58,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1477. [2021-03-10 20:38:58,952 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) [2021-03-10 20:38:58,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 4475 transitions. [2021-03-10 20:38:58,954 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 4475 transitions. Word has length 26 [2021-03-10 20:38:58,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:58,954 INFO L480 AbstractCegarLoop]: Abstraction has 1477 states and 4475 transitions. [2021-03-10 20:38:58,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:58,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 4475 transitions. [2021-03-10 20:38:58,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:58,955 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:58,956 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:58,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-03-10 20:38:58,956 INFO L428 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:58,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:58,956 INFO L82 PathProgramCache]: Analyzing trace with hash -63786894, now seen corresponding path program 95 times [2021-03-10 20:38:58,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:58,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847731533] [2021-03-10 20:38:58,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:59,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:59,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847731533] [2021-03-10 20:38:59,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:59,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:59,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311166785] [2021-03-10 20:38:59,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:59,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:59,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:59,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:59,018 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) [2021-03-10 20:38:59,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:59,184 INFO L93 Difference]: Finished difference Result 1654 states and 4965 transitions. [2021-03-10 20:38:59,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:59,184 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:59,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:59,186 INFO L225 Difference]: With dead ends: 1654 [2021-03-10 20:38:59,186 INFO L226 Difference]: Without dead ends: 1554 [2021-03-10 20:38:59,186 INFO L775 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 [2021-03-10 20:38:59,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-03-10 20:38:59,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1475. [2021-03-10 20:38:59,199 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) [2021-03-10 20:38:59,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 4473 transitions. [2021-03-10 20:38:59,201 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 4473 transitions. Word has length 26 [2021-03-10 20:38:59,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:59,201 INFO L480 AbstractCegarLoop]: Abstraction has 1475 states and 4473 transitions. [2021-03-10 20:38:59,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:59,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 4473 transitions. [2021-03-10 20:38:59,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:59,202 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:59,202 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:59,202 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-03-10 20:38:59,202 INFO L428 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:59,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:59,203 INFO L82 PathProgramCache]: Analyzing trace with hash -2121513890, now seen corresponding path program 96 times [2021-03-10 20:38:59,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:59,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070727161] [2021-03-10 20:38:59,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:59,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:59,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070727161] [2021-03-10 20:38:59,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:59,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:59,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656216532] [2021-03-10 20:38:59,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:59,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:59,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:59,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:59,266 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) [2021-03-10 20:38:59,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:59,436 INFO L93 Difference]: Finished difference Result 1649 states and 4952 transitions. [2021-03-10 20:38:59,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:59,436 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 [2021-03-10 20:38:59,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:59,438 INFO L225 Difference]: With dead ends: 1649 [2021-03-10 20:38:59,438 INFO L226 Difference]: Without dead ends: 1561 [2021-03-10 20:38:59,438 INFO L775 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 [2021-03-10 20:38:59,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2021-03-10 20:38:59,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1481. [2021-03-10 20:38:59,451 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) [2021-03-10 20:38:59,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 4491 transitions. [2021-03-10 20:38:59,453 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 4491 transitions. Word has length 26 [2021-03-10 20:38:59,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:59,453 INFO L480 AbstractCegarLoop]: Abstraction has 1481 states and 4491 transitions. [2021-03-10 20:38:59,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:59,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 4491 transitions. [2021-03-10 20:38:59,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:59,454 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:59,455 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:59,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-03-10 20:38:59,455 INFO L428 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:59,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:59,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1461385564, now seen corresponding path program 97 times [2021-03-10 20:38:59,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:59,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605369992] [2021-03-10 20:38:59,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:59,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:59,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605369992] [2021-03-10 20:38:59,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:59,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:59,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106674943] [2021-03-10 20:38:59,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:59,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:59,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:59,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:59,519 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) [2021-03-10 20:38:59,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:59,712 INFO L93 Difference]: Finished difference Result 1675 states and 4997 transitions. [2021-03-10 20:38:59,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:59,713 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:59,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:59,715 INFO L225 Difference]: With dead ends: 1675 [2021-03-10 20:38:59,715 INFO L226 Difference]: Without dead ends: 1583 [2021-03-10 20:38:59,715 INFO L775 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 [2021-03-10 20:38:59,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2021-03-10 20:38:59,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1479. [2021-03-10 20:38:59,734 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) [2021-03-10 20:38:59,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 4480 transitions. [2021-03-10 20:38:59,736 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 4480 transitions. Word has length 26 [2021-03-10 20:38:59,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:59,736 INFO L480 AbstractCegarLoop]: Abstraction has 1479 states and 4480 transitions. [2021-03-10 20:38:59,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:59,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 4480 transitions. [2021-03-10 20:38:59,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:59,738 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:59,738 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:59,738 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-03-10 20:38:59,738 INFO L428 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:59,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:59,738 INFO L82 PathProgramCache]: Analyzing trace with hash 781308860, now seen corresponding path program 98 times [2021-03-10 20:38:59,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:59,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704701790] [2021-03-10 20:38:59,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:38:59,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:38:59,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704701790] [2021-03-10 20:38:59,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:38:59,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:38:59,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256350664] [2021-03-10 20:38:59,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:38:59,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:38:59,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:38:59,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:38:59,798 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) [2021-03-10 20:38:59,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:38:59,970 INFO L93 Difference]: Finished difference Result 1599 states and 4788 transitions. [2021-03-10 20:38:59,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:38:59,970 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:38:59,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:38:59,972 INFO L225 Difference]: With dead ends: 1599 [2021-03-10 20:38:59,972 INFO L226 Difference]: Without dead ends: 1480 [2021-03-10 20:38:59,972 INFO L775 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 [2021-03-10 20:38:59,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-03-10 20:38:59,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1444. [2021-03-10 20:38:59,985 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) [2021-03-10 20:38:59,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 4393 transitions. [2021-03-10 20:38:59,986 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 4393 transitions. Word has length 26 [2021-03-10 20:38:59,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:38:59,987 INFO L480 AbstractCegarLoop]: Abstraction has 1444 states and 4393 transitions. [2021-03-10 20:38:59,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:38:59,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 4393 transitions. [2021-03-10 20:38:59,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:38:59,988 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:38:59,988 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:38:59,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-03-10 20:38:59,988 INFO L428 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:38:59,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:38:59,988 INFO L82 PathProgramCache]: Analyzing trace with hash -2101954, now seen corresponding path program 99 times [2021-03-10 20:38:59,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:38:59,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790486072] [2021-03-10 20:38:59,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:38:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:00,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:00,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790486072] [2021-03-10 20:39:00,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:00,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 20:39:00,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946973364] [2021-03-10 20:39:00,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 20:39:00,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:00,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 20:39:00,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-10 20:39:00,026 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) [2021-03-10 20:39:00,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:00,134 INFO L93 Difference]: Finished difference Result 1798 states and 5382 transitions. [2021-03-10 20:39:00,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 20:39:00,134 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 [2021-03-10 20:39:00,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:00,136 INFO L225 Difference]: With dead ends: 1798 [2021-03-10 20:39:00,136 INFO L226 Difference]: Without dead ends: 1641 [2021-03-10 20:39:00,136 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.9ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-10 20:39:00,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2021-03-10 20:39:00,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1518. [2021-03-10 20:39:00,150 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) [2021-03-10 20:39:00,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 4611 transitions. [2021-03-10 20:39:00,153 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 4611 transitions. Word has length 26 [2021-03-10 20:39:00,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:00,153 INFO L480 AbstractCegarLoop]: Abstraction has 1518 states and 4611 transitions. [2021-03-10 20:39:00,153 INFO L481 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) [2021-03-10 20:39:00,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 4611 transitions. [2021-03-10 20:39:00,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:00,154 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:00,154 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:00,154 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-03-10 20:39:00,154 INFO L428 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:00,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:00,155 INFO L82 PathProgramCache]: Analyzing trace with hash -861686948, now seen corresponding path program 100 times [2021-03-10 20:39:00,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:00,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078821192] [2021-03-10 20:39:00,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:00,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:00,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078821192] [2021-03-10 20:39:00,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:00,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:00,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618001926] [2021-03-10 20:39:00,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:00,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:00,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:00,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:00,204 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) [2021-03-10 20:39:00,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:00,343 INFO L93 Difference]: Finished difference Result 1800 states and 5385 transitions. [2021-03-10 20:39:00,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:00,343 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:00,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:00,345 INFO L225 Difference]: With dead ends: 1800 [2021-03-10 20:39:00,345 INFO L226 Difference]: Without dead ends: 1650 [2021-03-10 20:39:00,345 INFO L775 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 [2021-03-10 20:39:00,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2021-03-10 20:39:00,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1502. [2021-03-10 20:39:00,358 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) [2021-03-10 20:39:00,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 4569 transitions. [2021-03-10 20:39:00,360 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 4569 transitions. Word has length 26 [2021-03-10 20:39:00,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:00,360 INFO L480 AbstractCegarLoop]: Abstraction has 1502 states and 4569 transitions. [2021-03-10 20:39:00,360 INFO L481 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) [2021-03-10 20:39:00,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 4569 transitions. [2021-03-10 20:39:00,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:00,362 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:00,362 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:00,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-03-10 20:39:00,362 INFO L428 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:00,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:00,362 INFO L82 PathProgramCache]: Analyzing trace with hash -371708032, now seen corresponding path program 101 times [2021-03-10 20:39:00,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:00,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975715672] [2021-03-10 20:39:00,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:00,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:00,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975715672] [2021-03-10 20:39:00,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:00,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:00,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535766542] [2021-03-10 20:39:00,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:00,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:00,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:00,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:00,425 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) [2021-03-10 20:39:00,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:00,555 INFO L93 Difference]: Finished difference Result 1960 states and 5843 transitions. [2021-03-10 20:39:00,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:00,555 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 [2021-03-10 20:39:00,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:00,557 INFO L225 Difference]: With dead ends: 1960 [2021-03-10 20:39:00,557 INFO L226 Difference]: Without dead ends: 1674 [2021-03-10 20:39:00,557 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:00,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2021-03-10 20:39:00,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1624. [2021-03-10 20:39:00,572 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) [2021-03-10 20:39:00,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 4866 transitions. [2021-03-10 20:39:00,574 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 4866 transitions. Word has length 26 [2021-03-10 20:39:00,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:00,574 INFO L480 AbstractCegarLoop]: Abstraction has 1624 states and 4866 transitions. [2021-03-10 20:39:00,574 INFO L481 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) [2021-03-10 20:39:00,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 4866 transitions. [2021-03-10 20:39:00,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:00,576 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:00,576 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:00,576 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-03-10 20:39:00,576 INFO L428 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:00,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:00,576 INFO L82 PathProgramCache]: Analyzing trace with hash 552334938, now seen corresponding path program 102 times [2021-03-10 20:39:00,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:00,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924695236] [2021-03-10 20:39:00,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:00,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924695236] [2021-03-10 20:39:00,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:00,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:00,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547332179] [2021-03-10 20:39:00,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:00,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:00,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:00,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:00,651 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) [2021-03-10 20:39:00,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:00,818 INFO L93 Difference]: Finished difference Result 1845 states and 5416 transitions. [2021-03-10 20:39:00,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:00,818 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 [2021-03-10 20:39:00,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:00,820 INFO L225 Difference]: With dead ends: 1845 [2021-03-10 20:39:00,820 INFO L226 Difference]: Without dead ends: 1600 [2021-03-10 20:39:00,820 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:00,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2021-03-10 20:39:00,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1516. [2021-03-10 20:39:00,833 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) [2021-03-10 20:39:00,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 4482 transitions. [2021-03-10 20:39:00,835 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 4482 transitions. Word has length 26 [2021-03-10 20:39:00,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:00,835 INFO L480 AbstractCegarLoop]: Abstraction has 1516 states and 4482 transitions. [2021-03-10 20:39:00,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:00,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 4482 transitions. [2021-03-10 20:39:00,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:00,837 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:00,837 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:00,837 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-03-10 20:39:00,837 INFO L428 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:00,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:00,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1983958852, now seen corresponding path program 103 times [2021-03-10 20:39:00,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:00,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50558271] [2021-03-10 20:39:00,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:00,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:00,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50558271] [2021-03-10 20:39:00,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:00,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:00,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946775509] [2021-03-10 20:39:00,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:00,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:00,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:00,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:00,895 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) [2021-03-10 20:39:01,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:01,056 INFO L93 Difference]: Finished difference Result 1776 states and 5183 transitions. [2021-03-10 20:39:01,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:01,056 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 [2021-03-10 20:39:01,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:01,058 INFO L225 Difference]: With dead ends: 1776 [2021-03-10 20:39:01,058 INFO L226 Difference]: Without dead ends: 1640 [2021-03-10 20:39:01,058 INFO L775 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 [2021-03-10 20:39:01,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2021-03-10 20:39:01,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1518. [2021-03-10 20:39:01,071 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) [2021-03-10 20:39:01,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 4481 transitions. [2021-03-10 20:39:01,073 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 4481 transitions. Word has length 26 [2021-03-10 20:39:01,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:01,073 INFO L480 AbstractCegarLoop]: Abstraction has 1518 states and 4481 transitions. [2021-03-10 20:39:01,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:01,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 4481 transitions. [2021-03-10 20:39:01,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:01,074 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:01,074 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:01,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-03-10 20:39:01,074 INFO L428 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:01,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:01,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1711741822, now seen corresponding path program 104 times [2021-03-10 20:39:01,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:01,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82465069] [2021-03-10 20:39:01,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:01,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:01,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82465069] [2021-03-10 20:39:01,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:01,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:01,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813963591] [2021-03-10 20:39:01,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:01,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:01,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:01,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:01,149 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) [2021-03-10 20:39:01,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:01,318 INFO L93 Difference]: Finished difference Result 1746 states and 5066 transitions. [2021-03-10 20:39:01,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:01,318 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:01,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:01,320 INFO L225 Difference]: With dead ends: 1746 [2021-03-10 20:39:01,320 INFO L226 Difference]: Without dead ends: 1617 [2021-03-10 20:39:01,320 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:01,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2021-03-10 20:39:01,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1514. [2021-03-10 20:39:01,333 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) [2021-03-10 20:39:01,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 4470 transitions. [2021-03-10 20:39:01,335 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 4470 transitions. Word has length 26 [2021-03-10 20:39:01,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:01,335 INFO L480 AbstractCegarLoop]: Abstraction has 1514 states and 4470 transitions. [2021-03-10 20:39:01,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:01,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 4470 transitions. [2021-03-10 20:39:01,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:01,336 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:01,337 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:01,337 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-03-10 20:39:01,337 INFO L428 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:01,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:01,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1138344546, now seen corresponding path program 105 times [2021-03-10 20:39:01,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:01,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675202472] [2021-03-10 20:39:01,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:01,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:01,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675202472] [2021-03-10 20:39:01,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:01,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:01,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985575956] [2021-03-10 20:39:01,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:01,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:01,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:01,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:01,401 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) [2021-03-10 20:39:01,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:01,570 INFO L93 Difference]: Finished difference Result 1698 states and 4924 transitions. [2021-03-10 20:39:01,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:01,570 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:01,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:01,572 INFO L225 Difference]: With dead ends: 1698 [2021-03-10 20:39:01,572 INFO L226 Difference]: Without dead ends: 1552 [2021-03-10 20:39:01,572 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:01,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2021-03-10 20:39:01,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1502. [2021-03-10 20:39:01,592 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) [2021-03-10 20:39:01,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 4439 transitions. [2021-03-10 20:39:01,594 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 4439 transitions. Word has length 26 [2021-03-10 20:39:01,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:01,594 INFO L480 AbstractCegarLoop]: Abstraction has 1502 states and 4439 transitions. [2021-03-10 20:39:01,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:01,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 4439 transitions. [2021-03-10 20:39:01,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:01,596 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:01,596 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:01,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-03-10 20:39:01,596 INFO L428 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:01,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:01,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1141733984, now seen corresponding path program 106 times [2021-03-10 20:39:01,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:01,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950187409] [2021-03-10 20:39:01,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:01,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:01,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950187409] [2021-03-10 20:39:01,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:01,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:01,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508157228] [2021-03-10 20:39:01,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:01,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:01,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:01,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:01,651 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) [2021-03-10 20:39:01,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:01,816 INFO L93 Difference]: Finished difference Result 1727 states and 5036 transitions. [2021-03-10 20:39:01,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:01,816 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:01,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:01,818 INFO L225 Difference]: With dead ends: 1727 [2021-03-10 20:39:01,818 INFO L226 Difference]: Without dead ends: 1598 [2021-03-10 20:39:01,818 INFO L775 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 [2021-03-10 20:39:01,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2021-03-10 20:39:01,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1526. [2021-03-10 20:39:01,831 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) [2021-03-10 20:39:01,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 4505 transitions. [2021-03-10 20:39:01,833 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 4505 transitions. Word has length 26 [2021-03-10 20:39:01,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:01,833 INFO L480 AbstractCegarLoop]: Abstraction has 1526 states and 4505 transitions. [2021-03-10 20:39:01,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:01,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 4505 transitions. [2021-03-10 20:39:01,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:01,835 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:01,835 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:01,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-03-10 20:39:01,835 INFO L428 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:01,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:01,839 INFO L82 PathProgramCache]: Analyzing trace with hash 568336708, now seen corresponding path program 107 times [2021-03-10 20:39:01,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:01,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819695454] [2021-03-10 20:39:01,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:01,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:01,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819695454] [2021-03-10 20:39:01,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:01,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:01,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853553523] [2021-03-10 20:39:01,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:01,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:01,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:01,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:01,901 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) [2021-03-10 20:39:02,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:02,072 INFO L93 Difference]: Finished difference Result 1850 states and 5404 transitions. [2021-03-10 20:39:02,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:02,073 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:02,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:02,075 INFO L225 Difference]: With dead ends: 1850 [2021-03-10 20:39:02,075 INFO L226 Difference]: Without dead ends: 1689 [2021-03-10 20:39:02,075 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:02,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2021-03-10 20:39:02,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1590. [2021-03-10 20:39:02,089 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) [2021-03-10 20:39:02,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 4683 transitions. [2021-03-10 20:39:02,091 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 4683 transitions. Word has length 26 [2021-03-10 20:39:02,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:02,091 INFO L480 AbstractCegarLoop]: Abstraction has 1590 states and 4683 transitions. [2021-03-10 20:39:02,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:02,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 4683 transitions. [2021-03-10 20:39:02,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:02,093 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:02,093 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:02,093 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-03-10 20:39:02,093 INFO L428 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:02,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:02,093 INFO L82 PathProgramCache]: Analyzing trace with hash 442819714, now seen corresponding path program 108 times [2021-03-10 20:39:02,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:02,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775931821] [2021-03-10 20:39:02,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:02,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:02,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775931821] [2021-03-10 20:39:02,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:02,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:02,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395647572] [2021-03-10 20:39:02,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:02,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:02,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:02,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:02,154 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) [2021-03-10 20:39:02,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:02,323 INFO L93 Difference]: Finished difference Result 1788 states and 5178 transitions. [2021-03-10 20:39:02,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:02,323 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 [2021-03-10 20:39:02,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:02,325 INFO L225 Difference]: With dead ends: 1788 [2021-03-10 20:39:02,325 INFO L226 Difference]: Without dead ends: 1636 [2021-03-10 20:39:02,325 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:02,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-03-10 20:39:02,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1524. [2021-03-10 20:39:02,338 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) [2021-03-10 20:39:02,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 4494 transitions. [2021-03-10 20:39:02,340 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 4494 transitions. Word has length 26 [2021-03-10 20:39:02,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:02,340 INFO L480 AbstractCegarLoop]: Abstraction has 1524 states and 4494 transitions. [2021-03-10 20:39:02,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:02,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 4494 transitions. [2021-03-10 20:39:02,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:02,342 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:02,342 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:02,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-03-10 20:39:02,342 INFO L428 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:02,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:02,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1608572506, now seen corresponding path program 109 times [2021-03-10 20:39:02,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:02,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698449947] [2021-03-10 20:39:02,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:02,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:02,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698449947] [2021-03-10 20:39:02,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:02,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:02,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140074972] [2021-03-10 20:39:02,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:02,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:02,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:02,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:02,413 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) [2021-03-10 20:39:02,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:02,592 INFO L93 Difference]: Finished difference Result 1802 states and 5245 transitions. [2021-03-10 20:39:02,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:02,593 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:02,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:02,595 INFO L225 Difference]: With dead ends: 1802 [2021-03-10 20:39:02,595 INFO L226 Difference]: Without dead ends: 1586 [2021-03-10 20:39:02,595 INFO L775 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 [2021-03-10 20:39:02,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2021-03-10 20:39:02,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1464. [2021-03-10 20:39:02,608 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) [2021-03-10 20:39:02,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 4318 transitions. [2021-03-10 20:39:02,609 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 4318 transitions. Word has length 26 [2021-03-10 20:39:02,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:02,610 INFO L480 AbstractCegarLoop]: Abstraction has 1464 states and 4318 transitions. [2021-03-10 20:39:02,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:02,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 4318 transitions. [2021-03-10 20:39:02,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:02,611 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:02,611 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:02,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-03-10 20:39:02,611 INFO L428 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:02,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:02,611 INFO L82 PathProgramCache]: Analyzing trace with hash -2030139044, now seen corresponding path program 110 times [2021-03-10 20:39:02,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:02,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581095133] [2021-03-10 20:39:02,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:02,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:02,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581095133] [2021-03-10 20:39:02,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:02,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:02,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963433967] [2021-03-10 20:39:02,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:02,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:02,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:02,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:02,661 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) [2021-03-10 20:39:02,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:02,790 INFO L93 Difference]: Finished difference Result 1765 states and 5135 transitions. [2021-03-10 20:39:02,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:02,791 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 [2021-03-10 20:39:02,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:02,792 INFO L225 Difference]: With dead ends: 1765 [2021-03-10 20:39:02,792 INFO L226 Difference]: Without dead ends: 1626 [2021-03-10 20:39:02,792 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:02,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2021-03-10 20:39:02,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1511. [2021-03-10 20:39:02,806 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) [2021-03-10 20:39:02,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 4436 transitions. [2021-03-10 20:39:02,807 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 4436 transitions. Word has length 26 [2021-03-10 20:39:02,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:02,808 INFO L480 AbstractCegarLoop]: Abstraction has 1511 states and 4436 transitions. [2021-03-10 20:39:02,808 INFO L481 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) [2021-03-10 20:39:02,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 4436 transitions. [2021-03-10 20:39:02,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:02,809 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:02,809 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:02,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-03-10 20:39:02,809 INFO L428 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:02,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:02,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1405243258, now seen corresponding path program 111 times [2021-03-10 20:39:02,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:02,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300256640] [2021-03-10 20:39:02,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:02,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:02,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300256640] [2021-03-10 20:39:02,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:02,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:02,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632325555] [2021-03-10 20:39:02,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:02,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:02,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:02,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:02,864 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) [2021-03-10 20:39:03,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:03,022 INFO L93 Difference]: Finished difference Result 1727 states and 5019 transitions. [2021-03-10 20:39:03,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:03,022 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:03,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:03,024 INFO L225 Difference]: With dead ends: 1727 [2021-03-10 20:39:03,024 INFO L226 Difference]: Without dead ends: 1595 [2021-03-10 20:39:03,024 INFO L775 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 [2021-03-10 20:39:03,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2021-03-10 20:39:03,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1473. [2021-03-10 20:39:03,036 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) [2021-03-10 20:39:03,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 4332 transitions. [2021-03-10 20:39:03,038 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 4332 transitions. Word has length 26 [2021-03-10 20:39:03,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:03,038 INFO L480 AbstractCegarLoop]: Abstraction has 1473 states and 4332 transitions. [2021-03-10 20:39:03,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:03,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 4332 transitions. [2021-03-10 20:39:03,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:03,040 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:03,040 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:03,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-03-10 20:39:03,040 INFO L428 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:03,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:03,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1895222174, now seen corresponding path program 112 times [2021-03-10 20:39:03,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:03,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647182933] [2021-03-10 20:39:03,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:03,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:03,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647182933] [2021-03-10 20:39:03,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:03,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:03,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711911121] [2021-03-10 20:39:03,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:03,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:03,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:03,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:03,095 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) [2021-03-10 20:39:03,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:03,251 INFO L93 Difference]: Finished difference Result 1775 states and 5127 transitions. [2021-03-10 20:39:03,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:03,251 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 [2021-03-10 20:39:03,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:03,253 INFO L225 Difference]: With dead ends: 1775 [2021-03-10 20:39:03,253 INFO L226 Difference]: Without dead ends: 1647 [2021-03-10 20:39:03,253 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:03,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2021-03-10 20:39:03,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1525. [2021-03-10 20:39:03,267 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) [2021-03-10 20:39:03,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 4461 transitions. [2021-03-10 20:39:03,269 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 4461 transitions. Word has length 26 [2021-03-10 20:39:03,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:03,269 INFO L480 AbstractCegarLoop]: Abstraction has 1525 states and 4461 transitions. [2021-03-10 20:39:03,269 INFO L481 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) [2021-03-10 20:39:03,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 4461 transitions. [2021-03-10 20:39:03,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:03,270 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:03,270 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:03,270 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-03-10 20:39:03,270 INFO L428 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:03,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:03,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1475702152, now seen corresponding path program 113 times [2021-03-10 20:39:03,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:03,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311277486] [2021-03-10 20:39:03,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:03,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:03,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311277486] [2021-03-10 20:39:03,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:03,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:03,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705219240] [2021-03-10 20:39:03,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:03,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:03,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:03,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:03,331 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) [2021-03-10 20:39:03,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:03,505 INFO L93 Difference]: Finished difference Result 1738 states and 5008 transitions. [2021-03-10 20:39:03,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:03,506 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:03,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:03,507 INFO L225 Difference]: With dead ends: 1738 [2021-03-10 20:39:03,507 INFO L226 Difference]: Without dead ends: 1633 [2021-03-10 20:39:03,508 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:03,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2021-03-10 20:39:03,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1501. [2021-03-10 20:39:03,525 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) [2021-03-10 20:39:03,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 4399 transitions. [2021-03-10 20:39:03,527 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 4399 transitions. Word has length 26 [2021-03-10 20:39:03,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:03,527 INFO L480 AbstractCegarLoop]: Abstraction has 1501 states and 4399 transitions. [2021-03-10 20:39:03,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:03,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 4399 transitions. [2021-03-10 20:39:03,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:03,529 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:03,529 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:03,529 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-03-10 20:39:03,529 INFO L428 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:03,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:03,529 INFO L82 PathProgramCache]: Analyzing trace with hash 282971354, now seen corresponding path program 114 times [2021-03-10 20:39:03,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:03,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65869361] [2021-03-10 20:39:03,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:03,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:03,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65869361] [2021-03-10 20:39:03,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:03,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:03,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144823352] [2021-03-10 20:39:03,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:03,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:03,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:03,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:03,591 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) [2021-03-10 20:39:03,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:03,760 INFO L93 Difference]: Finished difference Result 1652 states and 4785 transitions. [2021-03-10 20:39:03,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:03,760 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:03,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:03,762 INFO L225 Difference]: With dead ends: 1652 [2021-03-10 20:39:03,762 INFO L226 Difference]: Without dead ends: 1573 [2021-03-10 20:39:03,762 INFO L775 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 [2021-03-10 20:39:03,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-03-10 20:39:03,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1507. [2021-03-10 20:39:03,775 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) [2021-03-10 20:39:03,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 4409 transitions. [2021-03-10 20:39:03,777 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 4409 transitions. Word has length 26 [2021-03-10 20:39:03,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:03,777 INFO L480 AbstractCegarLoop]: Abstraction has 1507 states and 4409 transitions. [2021-03-10 20:39:03,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:03,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 4409 transitions. [2021-03-10 20:39:03,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:03,778 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:03,778 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:03,778 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-03-10 20:39:03,778 INFO L428 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:03,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:03,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1152415962, now seen corresponding path program 115 times [2021-03-10 20:39:03,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:03,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954625501] [2021-03-10 20:39:03,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:03,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:03,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954625501] [2021-03-10 20:39:03,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:03,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:03,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162601471] [2021-03-10 20:39:03,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:03,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:03,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:03,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:03,842 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) [2021-03-10 20:39:04,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:04,006 INFO L93 Difference]: Finished difference Result 1745 states and 5047 transitions. [2021-03-10 20:39:04,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:04,006 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:04,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:04,008 INFO L225 Difference]: With dead ends: 1745 [2021-03-10 20:39:04,008 INFO L226 Difference]: Without dead ends: 1641 [2021-03-10 20:39:04,008 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:04,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2021-03-10 20:39:04,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1499. [2021-03-10 20:39:04,020 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) [2021-03-10 20:39:04,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 4394 transitions. [2021-03-10 20:39:04,022 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 4394 transitions. Word has length 26 [2021-03-10 20:39:04,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:04,022 INFO L480 AbstractCegarLoop]: Abstraction has 1499 states and 4394 transitions. [2021-03-10 20:39:04,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:04,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 4394 transitions. [2021-03-10 20:39:04,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:04,024 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:04,024 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:04,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-03-10 20:39:04,024 INFO L428 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:04,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:04,024 INFO L82 PathProgramCache]: Analyzing trace with hash -316295268, now seen corresponding path program 116 times [2021-03-10 20:39:04,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:04,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101793440] [2021-03-10 20:39:04,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:04,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:04,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101793440] [2021-03-10 20:39:04,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:04,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:04,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44256868] [2021-03-10 20:39:04,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:04,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:04,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:04,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:04,081 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) [2021-03-10 20:39:04,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:04,251 INFO L93 Difference]: Finished difference Result 1652 states and 4784 transitions. [2021-03-10 20:39:04,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:04,252 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:04,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:04,253 INFO L225 Difference]: With dead ends: 1652 [2021-03-10 20:39:04,253 INFO L226 Difference]: Without dead ends: 1573 [2021-03-10 20:39:04,253 INFO L775 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 [2021-03-10 20:39:04,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-03-10 20:39:04,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1493. [2021-03-10 20:39:04,266 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) [2021-03-10 20:39:04,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 4384 transitions. [2021-03-10 20:39:04,268 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 4384 transitions. Word has length 26 [2021-03-10 20:39:04,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:04,268 INFO L480 AbstractCegarLoop]: Abstraction has 1493 states and 4384 transitions. [2021-03-10 20:39:04,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:04,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 4384 transitions. [2021-03-10 20:39:04,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:04,269 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:04,269 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:04,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-03-10 20:39:04,269 INFO L428 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:04,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:04,270 INFO L82 PathProgramCache]: Analyzing trace with hash -889692544, now seen corresponding path program 117 times [2021-03-10 20:39:04,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:04,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107398972] [2021-03-10 20:39:04,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:04,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:04,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107398972] [2021-03-10 20:39:04,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:04,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:04,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134357092] [2021-03-10 20:39:04,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:04,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:04,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:04,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:04,332 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) [2021-03-10 20:39:04,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:04,513 INFO L93 Difference]: Finished difference Result 1700 states and 4918 transitions. [2021-03-10 20:39:04,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:04,513 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:04,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:04,515 INFO L225 Difference]: With dead ends: 1700 [2021-03-10 20:39:04,515 INFO L226 Difference]: Without dead ends: 1604 [2021-03-10 20:39:04,515 INFO L775 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 [2021-03-10 20:39:04,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2021-03-10 20:39:04,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1481. [2021-03-10 20:39:04,528 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) [2021-03-10 20:39:04,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 4361 transitions. [2021-03-10 20:39:04,530 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 4361 transitions. Word has length 26 [2021-03-10 20:39:04,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:04,530 INFO L480 AbstractCegarLoop]: Abstraction has 1481 states and 4361 transitions. [2021-03-10 20:39:04,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:04,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 4361 transitions. [2021-03-10 20:39:04,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:04,531 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:04,531 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:04,531 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-03-10 20:39:04,531 INFO L428 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:04,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:04,532 INFO L82 PathProgramCache]: Analyzing trace with hash -664852864, now seen corresponding path program 118 times [2021-03-10 20:39:04,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:04,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802978587] [2021-03-10 20:39:04,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:04,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:04,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802978587] [2021-03-10 20:39:04,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:04,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:04,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817234348] [2021-03-10 20:39:04,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:04,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:04,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:04,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:04,584 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) [2021-03-10 20:39:04,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:04,718 INFO L93 Difference]: Finished difference Result 1724 states and 4976 transitions. [2021-03-10 20:39:04,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:04,719 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 [2021-03-10 20:39:04,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:04,720 INFO L225 Difference]: With dead ends: 1724 [2021-03-10 20:39:04,720 INFO L226 Difference]: Without dead ends: 1560 [2021-03-10 20:39:04,720 INFO L775 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 [2021-03-10 20:39:04,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2021-03-10 20:39:04,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1470. [2021-03-10 20:39:04,733 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) [2021-03-10 20:39:04,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4309 transitions. [2021-03-10 20:39:04,735 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4309 transitions. Word has length 26 [2021-03-10 20:39:04,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:04,735 INFO L480 AbstractCegarLoop]: Abstraction has 1470 states and 4309 transitions. [2021-03-10 20:39:04,735 INFO L481 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) [2021-03-10 20:39:04,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4309 transitions. [2021-03-10 20:39:04,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:04,736 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:04,736 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:04,736 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-03-10 20:39:04,736 INFO L428 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:04,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:04,737 INFO L82 PathProgramCache]: Analyzing trace with hash 259190106, now seen corresponding path program 119 times [2021-03-10 20:39:04,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:04,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376672489] [2021-03-10 20:39:04,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:04,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:04,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376672489] [2021-03-10 20:39:04,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:04,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:04,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474434307] [2021-03-10 20:39:04,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:04,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:04,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:04,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:04,801 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) [2021-03-10 20:39:04,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:04,966 INFO L93 Difference]: Finished difference Result 1671 states and 4816 transitions. [2021-03-10 20:39:04,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:04,966 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:04,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:04,968 INFO L225 Difference]: With dead ends: 1671 [2021-03-10 20:39:04,968 INFO L226 Difference]: Without dead ends: 1566 [2021-03-10 20:39:04,968 INFO L775 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 [2021-03-10 20:39:04,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2021-03-10 20:39:04,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1446. [2021-03-10 20:39:04,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1445 states have (on average 2.9363321799307958) internal successors, (4243), 1445 states have internal predecessors, (4243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:04,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 4243 transitions. [2021-03-10 20:39:04,982 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 4243 transitions. Word has length 26 [2021-03-10 20:39:04,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:04,982 INFO L480 AbstractCegarLoop]: Abstraction has 1446 states and 4243 transitions. [2021-03-10 20:39:04,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:04,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 4243 transitions. [2021-03-10 20:39:04,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:04,984 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:04,984 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:04,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-03-10 20:39:04,984 INFO L428 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:04,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:04,984 INFO L82 PathProgramCache]: Analyzing trace with hash 376447608, now seen corresponding path program 120 times [2021-03-10 20:39:04,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:04,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860263048] [2021-03-10 20:39:04,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:05,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:05,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860263048] [2021-03-10 20:39:05,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:05,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:05,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103843416] [2021-03-10 20:39:05,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:05,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:05,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:05,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:05,043 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) [2021-03-10 20:39:05,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:05,210 INFO L93 Difference]: Finished difference Result 1597 states and 4640 transitions. [2021-03-10 20:39:05,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:05,210 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 [2021-03-10 20:39:05,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:05,212 INFO L225 Difference]: With dead ends: 1597 [2021-03-10 20:39:05,212 INFO L226 Difference]: Without dead ends: 1518 [2021-03-10 20:39:05,212 INFO L775 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 [2021-03-10 20:39:05,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-03-10 20:39:05,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1448. [2021-03-10 20:39:05,224 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) [2021-03-10 20:39:05,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 4250 transitions. [2021-03-10 20:39:05,226 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 4250 transitions. Word has length 26 [2021-03-10 20:39:05,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:05,226 INFO L480 AbstractCegarLoop]: Abstraction has 1448 states and 4250 transitions. [2021-03-10 20:39:05,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:05,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 4250 transitions. [2021-03-10 20:39:05,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:05,227 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:05,227 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:05,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-03-10 20:39:05,227 INFO L428 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:05,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:05,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1599135360, now seen corresponding path program 121 times [2021-03-10 20:39:05,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:05,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572715167] [2021-03-10 20:39:05,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:05,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:05,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572715167] [2021-03-10 20:39:05,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:05,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:05,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783375696] [2021-03-10 20:39:05,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:05,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:05,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:05,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:05,296 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) [2021-03-10 20:39:05,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:05,470 INFO L93 Difference]: Finished difference Result 1668 states and 4799 transitions. [2021-03-10 20:39:05,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:05,470 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 [2021-03-10 20:39:05,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:05,472 INFO L225 Difference]: With dead ends: 1668 [2021-03-10 20:39:05,472 INFO L226 Difference]: Without dead ends: 1579 [2021-03-10 20:39:05,472 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:05,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-03-10 20:39:05,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1445. [2021-03-10 20:39:05,484 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) [2021-03-10 20:39:05,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 4236 transitions. [2021-03-10 20:39:05,486 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 4236 transitions. Word has length 26 [2021-03-10 20:39:05,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:05,486 INFO L480 AbstractCegarLoop]: Abstraction has 1445 states and 4236 transitions. [2021-03-10 20:39:05,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:05,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 4236 transitions. [2021-03-10 20:39:05,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:05,488 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:05,488 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:05,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-03-10 20:39:05,488 INFO L428 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:05,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:05,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1192480934, now seen corresponding path program 122 times [2021-03-10 20:39:05,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:05,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6374021] [2021-03-10 20:39:05,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:05,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:05,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6374021] [2021-03-10 20:39:05,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:05,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:05,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589470230] [2021-03-10 20:39:05,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:05,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:05,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:05,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:05,545 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) [2021-03-10 20:39:05,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:05,709 INFO L93 Difference]: Finished difference Result 1656 states and 4808 transitions. [2021-03-10 20:39:05,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:05,709 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 [2021-03-10 20:39:05,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:05,711 INFO L225 Difference]: With dead ends: 1656 [2021-03-10 20:39:05,711 INFO L226 Difference]: Without dead ends: 1553 [2021-03-10 20:39:05,711 INFO L775 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 [2021-03-10 20:39:05,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2021-03-10 20:39:05,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1387. [2021-03-10 20:39:05,723 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) [2021-03-10 20:39:05,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 4096 transitions. [2021-03-10 20:39:05,725 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 4096 transitions. Word has length 26 [2021-03-10 20:39:05,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:05,725 INFO L480 AbstractCegarLoop]: Abstraction has 1387 states and 4096 transitions. [2021-03-10 20:39:05,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:05,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 4096 transitions. [2021-03-10 20:39:05,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:05,726 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:05,726 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:05,727 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-03-10 20:39:05,727 INFO L428 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:05,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:05,727 INFO L82 PathProgramCache]: Analyzing trace with hash -938795814, now seen corresponding path program 123 times [2021-03-10 20:39:05,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:05,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170455064] [2021-03-10 20:39:05,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:05,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:05,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170455064] [2021-03-10 20:39:05,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:05,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:05,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248068246] [2021-03-10 20:39:05,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:05,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:05,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:05,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:05,791 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) [2021-03-10 20:39:05,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:05,959 INFO L93 Difference]: Finished difference Result 1532 states and 4467 transitions. [2021-03-10 20:39:05,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:05,959 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:05,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:05,961 INFO L225 Difference]: With dead ends: 1532 [2021-03-10 20:39:05,961 INFO L226 Difference]: Without dead ends: 1453 [2021-03-10 20:39:05,961 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:05,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-03-10 20:39:05,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1388. [2021-03-10 20:39:05,973 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) [2021-03-10 20:39:05,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 4100 transitions. [2021-03-10 20:39:05,975 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 4100 transitions. Word has length 26 [2021-03-10 20:39:05,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:05,975 INFO L480 AbstractCegarLoop]: Abstraction has 1388 states and 4100 transitions. [2021-03-10 20:39:05,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:05,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 4100 transitions. [2021-03-10 20:39:05,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:05,976 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:05,976 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:05,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-03-10 20:39:05,976 INFO L428 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:05,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:05,976 INFO L82 PathProgramCache]: Analyzing trace with hash -69351206, now seen corresponding path program 124 times [2021-03-10 20:39:05,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:05,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050519450] [2021-03-10 20:39:05,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:06,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:06,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050519450] [2021-03-10 20:39:06,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:06,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:06,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692960656] [2021-03-10 20:39:06,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:06,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:06,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:06,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:06,049 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) [2021-03-10 20:39:06,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:06,217 INFO L93 Difference]: Finished difference Result 1568 states and 4567 transitions. [2021-03-10 20:39:06,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:06,217 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:06,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:06,219 INFO L225 Difference]: With dead ends: 1568 [2021-03-10 20:39:06,219 INFO L226 Difference]: Without dead ends: 1464 [2021-03-10 20:39:06,219 INFO L775 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 [2021-03-10 20:39:06,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-03-10 20:39:06,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1391. [2021-03-10 20:39:06,231 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) [2021-03-10 20:39:06,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 4109 transitions. [2021-03-10 20:39:06,232 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 4109 transitions. Word has length 26 [2021-03-10 20:39:06,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:06,232 INFO L480 AbstractCegarLoop]: Abstraction has 1391 states and 4109 transitions. [2021-03-10 20:39:06,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:06,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 4109 transitions. [2021-03-10 20:39:06,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:06,234 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:06,234 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:06,234 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-03-10 20:39:06,234 INFO L428 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:06,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:06,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1538062436, now seen corresponding path program 125 times [2021-03-10 20:39:06,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:06,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898846007] [2021-03-10 20:39:06,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:06,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:06,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898846007] [2021-03-10 20:39:06,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:06,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:06,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336145361] [2021-03-10 20:39:06,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:06,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:06,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:06,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:06,301 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) [2021-03-10 20:39:06,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:06,474 INFO L93 Difference]: Finished difference Result 1536 states and 4479 transitions. [2021-03-10 20:39:06,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:06,474 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:06,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:06,475 INFO L225 Difference]: With dead ends: 1536 [2021-03-10 20:39:06,476 INFO L226 Difference]: Without dead ends: 1457 [2021-03-10 20:39:06,476 INFO L775 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 [2021-03-10 20:39:06,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2021-03-10 20:39:06,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1392. [2021-03-10 20:39:06,488 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) [2021-03-10 20:39:06,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 4113 transitions. [2021-03-10 20:39:06,490 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 4113 transitions. Word has length 26 [2021-03-10 20:39:06,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:06,490 INFO L480 AbstractCegarLoop]: Abstraction has 1392 states and 4113 transitions. [2021-03-10 20:39:06,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:06,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 4113 transitions. [2021-03-10 20:39:06,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:06,492 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:06,492 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:06,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-03-10 20:39:06,492 INFO L428 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:06,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:06,492 INFO L82 PathProgramCache]: Analyzing trace with hash -2111459712, now seen corresponding path program 126 times [2021-03-10 20:39:06,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:06,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205803776] [2021-03-10 20:39:06,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:06,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:06,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205803776] [2021-03-10 20:39:06,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:06,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:06,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246861880] [2021-03-10 20:39:06,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:06,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:06,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:06,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:06,562 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) [2021-03-10 20:39:06,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:06,746 INFO L93 Difference]: Finished difference Result 1543 states and 4492 transitions. [2021-03-10 20:39:06,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:06,746 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:06,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:06,748 INFO L225 Difference]: With dead ends: 1543 [2021-03-10 20:39:06,748 INFO L226 Difference]: Without dead ends: 1460 [2021-03-10 20:39:06,748 INFO L775 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 [2021-03-10 20:39:06,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-03-10 20:39:06,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1393. [2021-03-10 20:39:06,759 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) [2021-03-10 20:39:06,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 4115 transitions. [2021-03-10 20:39:06,761 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 4115 transitions. Word has length 26 [2021-03-10 20:39:06,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:06,761 INFO L480 AbstractCegarLoop]: Abstraction has 1393 states and 4115 transitions. [2021-03-10 20:39:06,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:06,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 4115 transitions. [2021-03-10 20:39:06,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:06,762 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:06,763 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:06,763 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-03-10 20:39:06,763 INFO L428 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:06,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:06,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1524908864, now seen corresponding path program 127 times [2021-03-10 20:39:06,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:06,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808894850] [2021-03-10 20:39:06,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:06,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808894850] [2021-03-10 20:39:06,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:06,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:06,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231233267] [2021-03-10 20:39:06,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:06,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:06,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:06,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:06,825 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) [2021-03-10 20:39:07,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:07,003 INFO L93 Difference]: Finished difference Result 1572 states and 4601 transitions. [2021-03-10 20:39:07,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:07,004 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:07,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:07,005 INFO L225 Difference]: With dead ends: 1572 [2021-03-10 20:39:07,005 INFO L226 Difference]: Without dead ends: 1475 [2021-03-10 20:39:07,005 INFO L775 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 [2021-03-10 20:39:07,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2021-03-10 20:39:07,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1390. [2021-03-10 20:39:07,017 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) [2021-03-10 20:39:07,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 4104 transitions. [2021-03-10 20:39:07,019 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 4104 transitions. Word has length 26 [2021-03-10 20:39:07,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:07,019 INFO L480 AbstractCegarLoop]: Abstraction has 1390 states and 4104 transitions. [2021-03-10 20:39:07,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:07,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 4104 transitions. [2021-03-10 20:39:07,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:07,020 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:07,020 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:07,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-03-10 20:39:07,020 INFO L428 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:07,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:07,021 INFO L82 PathProgramCache]: Analyzing trace with hash 2057990590, now seen corresponding path program 128 times [2021-03-10 20:39:07,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:07,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516660538] [2021-03-10 20:39:07,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:07,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516660538] [2021-03-10 20:39:07,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:07,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:07,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081234218] [2021-03-10 20:39:07,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:07,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:07,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:07,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:07,078 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) [2021-03-10 20:39:07,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:07,244 INFO L93 Difference]: Finished difference Result 1586 states and 4616 transitions. [2021-03-10 20:39:07,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:07,244 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:07,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:07,246 INFO L225 Difference]: With dead ends: 1586 [2021-03-10 20:39:07,246 INFO L226 Difference]: Without dead ends: 1498 [2021-03-10 20:39:07,246 INFO L775 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 [2021-03-10 20:39:07,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2021-03-10 20:39:07,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1391. [2021-03-10 20:39:07,258 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) [2021-03-10 20:39:07,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 4105 transitions. [2021-03-10 20:39:07,259 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 4105 transitions. Word has length 26 [2021-03-10 20:39:07,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:07,260 INFO L480 AbstractCegarLoop]: Abstraction has 1391 states and 4105 transitions. [2021-03-10 20:39:07,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:07,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 4105 transitions. [2021-03-10 20:39:07,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:07,261 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:07,261 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:07,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-03-10 20:39:07,261 INFO L428 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:07,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:07,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1145603780, now seen corresponding path program 129 times [2021-03-10 20:39:07,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:07,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956011466] [2021-03-10 20:39:07,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:07,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:07,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956011466] [2021-03-10 20:39:07,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:07,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:07,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441981575] [2021-03-10 20:39:07,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:07,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:07,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:07,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:07,329 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) [2021-03-10 20:39:07,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:07,504 INFO L93 Difference]: Finished difference Result 1597 states and 4669 transitions. [2021-03-10 20:39:07,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:07,504 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 [2021-03-10 20:39:07,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:07,506 INFO L225 Difference]: With dead ends: 1597 [2021-03-10 20:39:07,506 INFO L226 Difference]: Without dead ends: 1518 [2021-03-10 20:39:07,506 INFO L775 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 [2021-03-10 20:39:07,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-03-10 20:39:07,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1397. [2021-03-10 20:39:07,518 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) [2021-03-10 20:39:07,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 4125 transitions. [2021-03-10 20:39:07,520 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 4125 transitions. Word has length 26 [2021-03-10 20:39:07,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:07,520 INFO L480 AbstractCegarLoop]: Abstraction has 1397 states and 4125 transitions. [2021-03-10 20:39:07,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:07,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 4125 transitions. [2021-03-10 20:39:07,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:07,521 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:07,521 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:07,521 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-03-10 20:39:07,521 INFO L428 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:07,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:07,521 INFO L82 PathProgramCache]: Analyzing trace with hash -276159172, now seen corresponding path program 130 times [2021-03-10 20:39:07,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:07,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178655594] [2021-03-10 20:39:07,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:07,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:07,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178655594] [2021-03-10 20:39:07,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:07,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:07,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979246998] [2021-03-10 20:39:07,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:07,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:07,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:07,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:07,584 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) [2021-03-10 20:39:07,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:07,749 INFO L93 Difference]: Finished difference Result 1624 states and 4728 transitions. [2021-03-10 20:39:07,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:07,750 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 [2021-03-10 20:39:07,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:07,751 INFO L225 Difference]: With dead ends: 1624 [2021-03-10 20:39:07,751 INFO L226 Difference]: Without dead ends: 1520 [2021-03-10 20:39:07,751 INFO L775 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 [2021-03-10 20:39:07,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-03-10 20:39:07,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1388. [2021-03-10 20:39:07,763 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) [2021-03-10 20:39:07,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 4091 transitions. [2021-03-10 20:39:07,765 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 4091 transitions. Word has length 26 [2021-03-10 20:39:07,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:07,765 INFO L480 AbstractCegarLoop]: Abstraction has 1388 states and 4091 transitions. [2021-03-10 20:39:07,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:07,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 4091 transitions. [2021-03-10 20:39:07,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:07,766 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:07,766 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:07,766 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-03-10 20:39:07,767 INFO L428 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:07,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:07,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1644524698, now seen corresponding path program 131 times [2021-03-10 20:39:07,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:07,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105218688] [2021-03-10 20:39:07,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:07,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105218688] [2021-03-10 20:39:07,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:07,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:07,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980013551] [2021-03-10 20:39:07,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:07,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:07,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:07,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:07,830 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) [2021-03-10 20:39:07,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:07,998 INFO L93 Difference]: Finished difference Result 1580 states and 4623 transitions. [2021-03-10 20:39:07,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:07,998 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:07,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:07,999 INFO L225 Difference]: With dead ends: 1580 [2021-03-10 20:39:07,999 INFO L226 Difference]: Without dead ends: 1492 [2021-03-10 20:39:08,000 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:08,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-03-10 20:39:08,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1389. [2021-03-10 20:39:08,011 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) [2021-03-10 20:39:08,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 4096 transitions. [2021-03-10 20:39:08,013 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 4096 transitions. Word has length 26 [2021-03-10 20:39:08,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:08,013 INFO L480 AbstractCegarLoop]: Abstraction has 1389 states and 4096 transitions. [2021-03-10 20:39:08,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:08,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 4096 transitions. [2021-03-10 20:39:08,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:08,014 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:08,015 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:08,015 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-03-10 20:39:08,015 INFO L428 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:08,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:08,015 INFO L82 PathProgramCache]: Analyzing trace with hash -25644290, now seen corresponding path program 132 times [2021-03-10 20:39:08,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:08,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335119196] [2021-03-10 20:39:08,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:08,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:08,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335119196] [2021-03-10 20:39:08,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:08,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:08,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115865665] [2021-03-10 20:39:08,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:08,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:08,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:08,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:08,077 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) [2021-03-10 20:39:08,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:08,249 INFO L93 Difference]: Finished difference Result 1516 states and 4425 transitions. [2021-03-10 20:39:08,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:08,249 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:08,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:08,250 INFO L225 Difference]: With dead ends: 1516 [2021-03-10 20:39:08,251 INFO L226 Difference]: Without dead ends: 1437 [2021-03-10 20:39:08,251 INFO L775 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 [2021-03-10 20:39:08,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2021-03-10 20:39:08,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1388. [2021-03-10 20:39:08,262 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) [2021-03-10 20:39:08,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 4092 transitions. [2021-03-10 20:39:08,264 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 4092 transitions. Word has length 26 [2021-03-10 20:39:08,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:08,264 INFO L480 AbstractCegarLoop]: Abstraction has 1388 states and 4092 transitions. [2021-03-10 20:39:08,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:08,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 4092 transitions. [2021-03-10 20:39:08,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:08,265 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:08,266 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:08,266 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-03-10 20:39:08,266 INFO L428 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:08,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:08,266 INFO L82 PathProgramCache]: Analyzing trace with hash -599041566, now seen corresponding path program 133 times [2021-03-10 20:39:08,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:08,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35417806] [2021-03-10 20:39:08,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:08,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:08,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35417806] [2021-03-10 20:39:08,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:08,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:08,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079270427] [2021-03-10 20:39:08,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:08,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:08,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:08,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:08,324 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) [2021-03-10 20:39:08,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:08,498 INFO L93 Difference]: Finished difference Result 1536 states and 4461 transitions. [2021-03-10 20:39:08,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:08,499 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 [2021-03-10 20:39:08,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:08,500 INFO L225 Difference]: With dead ends: 1536 [2021-03-10 20:39:08,500 INFO L226 Difference]: Without dead ends: 1453 [2021-03-10 20:39:08,500 INFO L775 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 [2021-03-10 20:39:08,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-03-10 20:39:08,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1386. [2021-03-10 20:39:08,512 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) [2021-03-10 20:39:08,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 4085 transitions. [2021-03-10 20:39:08,514 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 4085 transitions. Word has length 26 [2021-03-10 20:39:08,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:08,514 INFO L480 AbstractCegarLoop]: Abstraction has 1386 states and 4085 transitions. [2021-03-10 20:39:08,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:08,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 4085 transitions. [2021-03-10 20:39:08,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:08,515 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:08,515 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:08,515 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-03-10 20:39:08,515 INFO L428 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:08,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:08,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1417788836, now seen corresponding path program 134 times [2021-03-10 20:39:08,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:08,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366189469] [2021-03-10 20:39:08,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:08,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:08,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366189469] [2021-03-10 20:39:08,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:08,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:08,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578180807] [2021-03-10 20:39:08,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:08,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:08,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:08,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:08,574 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) [2021-03-10 20:39:08,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:08,740 INFO L93 Difference]: Finished difference Result 1582 states and 4605 transitions. [2021-03-10 20:39:08,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:08,740 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 [2021-03-10 20:39:08,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:08,742 INFO L225 Difference]: With dead ends: 1582 [2021-03-10 20:39:08,742 INFO L226 Difference]: Without dead ends: 1497 [2021-03-10 20:39:08,742 INFO L775 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 [2021-03-10 20:39:08,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2021-03-10 20:39:08,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1383. [2021-03-10 20:39:08,754 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) [2021-03-10 20:39:08,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 4072 transitions. [2021-03-10 20:39:08,756 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 4072 transitions. Word has length 26 [2021-03-10 20:39:08,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:08,756 INFO L480 AbstractCegarLoop]: Abstraction has 1383 states and 4072 transitions. [2021-03-10 20:39:08,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:08,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 4072 transitions. [2021-03-10 20:39:08,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:08,757 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:08,757 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:08,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-03-10 20:39:08,758 INFO L428 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:08,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:08,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1848108702, now seen corresponding path program 135 times [2021-03-10 20:39:08,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:08,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779162204] [2021-03-10 20:39:08,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:08,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:08,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779162204] [2021-03-10 20:39:08,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:08,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:08,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043707550] [2021-03-10 20:39:08,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:08,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:08,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:08,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:08,817 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) [2021-03-10 20:39:08,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:08,986 INFO L93 Difference]: Finished difference Result 1557 states and 4506 transitions. [2021-03-10 20:39:08,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:08,986 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 [2021-03-10 20:39:08,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:08,988 INFO L225 Difference]: With dead ends: 1557 [2021-03-10 20:39:08,988 INFO L226 Difference]: Without dead ends: 1464 [2021-03-10 20:39:08,988 INFO L775 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 [2021-03-10 20:39:08,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-03-10 20:39:08,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1372. [2021-03-10 20:39:09,000 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) [2021-03-10 20:39:09,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 4050 transitions. [2021-03-10 20:39:09,001 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 4050 transitions. Word has length 26 [2021-03-10 20:39:09,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:09,001 INFO L480 AbstractCegarLoop]: Abstraction has 1372 states and 4050 transitions. [2021-03-10 20:39:09,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:09,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 4050 transitions. [2021-03-10 20:39:09,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:09,003 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:09,003 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:09,003 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-03-10 20:39:09,003 INFO L428 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:09,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:09,003 INFO L82 PathProgramCache]: Analyzing trace with hash -782554082, now seen corresponding path program 136 times [2021-03-10 20:39:09,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:09,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577789057] [2021-03-10 20:39:09,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:09,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:09,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577789057] [2021-03-10 20:39:09,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:09,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 20:39:09,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266395701] [2021-03-10 20:39:09,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 20:39:09,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:09,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 20:39:09,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-10 20:39:09,045 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) [2021-03-10 20:39:09,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:09,148 INFO L93 Difference]: Finished difference Result 1654 states and 4846 transitions. [2021-03-10 20:39:09,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 20:39:09,148 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 [2021-03-10 20:39:09,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:09,150 INFO L225 Difference]: With dead ends: 1654 [2021-03-10 20:39:09,150 INFO L226 Difference]: Without dead ends: 1575 [2021-03-10 20:39:09,150 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.1ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-10 20:39:09,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2021-03-10 20:39:09,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1438. [2021-03-10 20:39:09,162 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) [2021-03-10 20:39:09,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4247 transitions. [2021-03-10 20:39:09,164 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4247 transitions. Word has length 26 [2021-03-10 20:39:09,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:09,164 INFO L480 AbstractCegarLoop]: Abstraction has 1438 states and 4247 transitions. [2021-03-10 20:39:09,164 INFO L481 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) [2021-03-10 20:39:09,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4247 transitions. [2021-03-10 20:39:09,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:09,166 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:09,166 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:09,166 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-03-10 20:39:09,166 INFO L428 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:09,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:09,166 INFO L82 PathProgramCache]: Analyzing trace with hash 440133670, now seen corresponding path program 137 times [2021-03-10 20:39:09,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:09,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131155616] [2021-03-10 20:39:09,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:09,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:09,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131155616] [2021-03-10 20:39:09,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:09,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:09,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525682243] [2021-03-10 20:39:09,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:09,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:09,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:09,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:09,219 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) [2021-03-10 20:39:09,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:09,362 INFO L93 Difference]: Finished difference Result 1749 states and 5118 transitions. [2021-03-10 20:39:09,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:09,362 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 [2021-03-10 20:39:09,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:09,364 INFO L225 Difference]: With dead ends: 1749 [2021-03-10 20:39:09,364 INFO L226 Difference]: Without dead ends: 1598 [2021-03-10 20:39:09,364 INFO L775 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 [2021-03-10 20:39:09,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2021-03-10 20:39:09,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1426. [2021-03-10 20:39:09,376 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) [2021-03-10 20:39:09,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4209 transitions. [2021-03-10 20:39:09,378 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4209 transitions. Word has length 26 [2021-03-10 20:39:09,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:09,378 INFO L480 AbstractCegarLoop]: Abstraction has 1426 states and 4209 transitions. [2021-03-10 20:39:09,378 INFO L481 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) [2021-03-10 20:39:09,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4209 transitions. [2021-03-10 20:39:09,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:09,380 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:09,380 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:09,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-03-10 20:39:09,380 INFO L428 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:09,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:09,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1794672444, now seen corresponding path program 138 times [2021-03-10 20:39:09,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:09,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850071003] [2021-03-10 20:39:09,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:09,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:09,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850071003] [2021-03-10 20:39:09,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:09,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:09,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536111232] [2021-03-10 20:39:09,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:09,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:09,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:09,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:09,434 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) [2021-03-10 20:39:09,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:09,568 INFO L93 Difference]: Finished difference Result 1711 states and 4999 transitions. [2021-03-10 20:39:09,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:09,568 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 [2021-03-10 20:39:09,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:09,570 INFO L225 Difference]: With dead ends: 1711 [2021-03-10 20:39:09,570 INFO L226 Difference]: Without dead ends: 1632 [2021-03-10 20:39:09,570 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:09,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2021-03-10 20:39:09,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1428. [2021-03-10 20:39:09,583 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) [2021-03-10 20:39:09,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 4214 transitions. [2021-03-10 20:39:09,584 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 4214 transitions. Word has length 26 [2021-03-10 20:39:09,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:09,585 INFO L480 AbstractCegarLoop]: Abstraction has 1428 states and 4214 transitions. [2021-03-10 20:39:09,585 INFO L481 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) [2021-03-10 20:39:09,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 4214 transitions. [2021-03-10 20:39:09,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:09,586 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:09,586 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:09,586 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-03-10 20:39:09,586 INFO L428 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:09,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:09,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1277607100, now seen corresponding path program 139 times [2021-03-10 20:39:09,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:09,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781370385] [2021-03-10 20:39:09,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:09,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:09,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781370385] [2021-03-10 20:39:09,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:09,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:09,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068121075] [2021-03-10 20:39:09,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:09,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:09,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:09,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:09,636 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) [2021-03-10 20:39:09,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:09,781 INFO L93 Difference]: Finished difference Result 1743 states and 5115 transitions. [2021-03-10 20:39:09,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:09,781 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 [2021-03-10 20:39:09,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:09,783 INFO L225 Difference]: With dead ends: 1743 [2021-03-10 20:39:09,783 INFO L226 Difference]: Without dead ends: 1660 [2021-03-10 20:39:09,783 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:09,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2021-03-10 20:39:09,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1428. [2021-03-10 20:39:09,796 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) [2021-03-10 20:39:09,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 4212 transitions. [2021-03-10 20:39:09,798 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 4212 transitions. Word has length 26 [2021-03-10 20:39:09,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:09,798 INFO L480 AbstractCegarLoop]: Abstraction has 1428 states and 4212 transitions. [2021-03-10 20:39:09,798 INFO L481 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) [2021-03-10 20:39:09,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 4212 transitions. [2021-03-10 20:39:09,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:09,799 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:09,799 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:09,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-03-10 20:39:09,799 INFO L428 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:09,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:09,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1532456486, now seen corresponding path program 140 times [2021-03-10 20:39:09,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:09,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062126165] [2021-03-10 20:39:09,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:09,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:09,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062126165] [2021-03-10 20:39:09,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:09,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:09,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719109286] [2021-03-10 20:39:09,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:09,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:09,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:09,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:09,849 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) [2021-03-10 20:39:09,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:09,985 INFO L93 Difference]: Finished difference Result 1741 states and 5077 transitions. [2021-03-10 20:39:09,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:09,985 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 [2021-03-10 20:39:09,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:09,987 INFO L225 Difference]: With dead ends: 1741 [2021-03-10 20:39:09,987 INFO L226 Difference]: Without dead ends: 1630 [2021-03-10 20:39:09,987 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:09,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2021-03-10 20:39:09,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1396. [2021-03-10 20:39:09,999 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) [2021-03-10 20:39:10,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 4116 transitions. [2021-03-10 20:39:10,001 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 4116 transitions. Word has length 26 [2021-03-10 20:39:10,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:10,001 INFO L480 AbstractCegarLoop]: Abstraction has 1396 states and 4116 transitions. [2021-03-10 20:39:10,001 INFO L481 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) [2021-03-10 20:39:10,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 4116 transitions. [2021-03-10 20:39:10,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:10,003 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:10,003 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:10,003 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-03-10 20:39:10,003 INFO L428 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:10,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:10,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1774043234, now seen corresponding path program 141 times [2021-03-10 20:39:10,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:10,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703029680] [2021-03-10 20:39:10,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:10,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:10,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:10,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703029680] [2021-03-10 20:39:10,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:10,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:10,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469914345] [2021-03-10 20:39:10,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:10,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:10,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:10,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:10,056 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) [2021-03-10 20:39:10,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:10,193 INFO L93 Difference]: Finished difference Result 1586 states and 4638 transitions. [2021-03-10 20:39:10,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:10,194 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 [2021-03-10 20:39:10,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:10,195 INFO L225 Difference]: With dead ends: 1586 [2021-03-10 20:39:10,195 INFO L226 Difference]: Without dead ends: 1507 [2021-03-10 20:39:10,195 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:10,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2021-03-10 20:39:10,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1406. [2021-03-10 20:39:10,207 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) [2021-03-10 20:39:10,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4146 transitions. [2021-03-10 20:39:10,209 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4146 transitions. Word has length 26 [2021-03-10 20:39:10,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:10,209 INFO L480 AbstractCegarLoop]: Abstraction has 1406 states and 4146 transitions. [2021-03-10 20:39:10,209 INFO L481 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) [2021-03-10 20:39:10,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4146 transitions. [2021-03-10 20:39:10,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:10,210 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:10,210 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:10,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-03-10 20:39:10,210 INFO L428 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:10,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:10,211 INFO L82 PathProgramCache]: Analyzing trace with hash -904598626, now seen corresponding path program 142 times [2021-03-10 20:39:10,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:10,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579650334] [2021-03-10 20:39:10,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:10,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:10,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579650334] [2021-03-10 20:39:10,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:10,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:10,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884794399] [2021-03-10 20:39:10,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:10,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:10,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:10,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:10,272 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) [2021-03-10 20:39:10,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:10,406 INFO L93 Difference]: Finished difference Result 1622 states and 4736 transitions. [2021-03-10 20:39:10,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:10,406 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 [2021-03-10 20:39:10,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:10,408 INFO L225 Difference]: With dead ends: 1622 [2021-03-10 20:39:10,408 INFO L226 Difference]: Without dead ends: 1518 [2021-03-10 20:39:10,408 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:10,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-03-10 20:39:10,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1422. [2021-03-10 20:39:10,420 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) [2021-03-10 20:39:10,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 4195 transitions. [2021-03-10 20:39:10,422 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 4195 transitions. Word has length 26 [2021-03-10 20:39:10,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:10,422 INFO L480 AbstractCegarLoop]: Abstraction has 1422 states and 4195 transitions. [2021-03-10 20:39:10,422 INFO L481 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) [2021-03-10 20:39:10,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 4195 transitions. [2021-03-10 20:39:10,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:10,423 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:10,423 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:10,423 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-03-10 20:39:10,424 INFO L428 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:10,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:10,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1921657440, now seen corresponding path program 143 times [2021-03-10 20:39:10,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:10,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150640107] [2021-03-10 20:39:10,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:10,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:10,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150640107] [2021-03-10 20:39:10,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:10,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:10,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742522569] [2021-03-10 20:39:10,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:10,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:10,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:10,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:10,499 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) [2021-03-10 20:39:10,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:10,672 INFO L93 Difference]: Finished difference Result 1651 states and 4814 transitions. [2021-03-10 20:39:10,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:10,672 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:10,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:10,674 INFO L225 Difference]: With dead ends: 1651 [2021-03-10 20:39:10,674 INFO L226 Difference]: Without dead ends: 1572 [2021-03-10 20:39:10,674 INFO L775 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 [2021-03-10 20:39:10,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2021-03-10 20:39:10,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1446. [2021-03-10 20:39:10,686 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) [2021-03-10 20:39:10,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 4261 transitions. [2021-03-10 20:39:10,688 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 4261 transitions. Word has length 26 [2021-03-10 20:39:10,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:10,688 INFO L480 AbstractCegarLoop]: Abstraction has 1446 states and 4261 transitions. [2021-03-10 20:39:10,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:10,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 4261 transitions. [2021-03-10 20:39:10,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:10,689 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:10,689 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:10,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-03-10 20:39:10,690 INFO L428 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:10,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:10,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1348260164, now seen corresponding path program 144 times [2021-03-10 20:39:10,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:10,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577211749] [2021-03-10 20:39:10,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:10,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:10,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577211749] [2021-03-10 20:39:10,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:10,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:10,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853320909] [2021-03-10 20:39:10,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:10,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:10,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:10,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:10,760 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) [2021-03-10 20:39:10,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:10,939 INFO L93 Difference]: Finished difference Result 1620 states and 4730 transitions. [2021-03-10 20:39:10,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:10,940 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 [2021-03-10 20:39:10,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:10,941 INFO L225 Difference]: With dead ends: 1620 [2021-03-10 20:39:10,941 INFO L226 Difference]: Without dead ends: 1509 [2021-03-10 20:39:10,941 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:10,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2021-03-10 20:39:10,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1461. [2021-03-10 20:39:10,954 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) [2021-03-10 20:39:10,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 4308 transitions. [2021-03-10 20:39:10,956 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 4308 transitions. Word has length 26 [2021-03-10 20:39:10,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:10,956 INFO L480 AbstractCegarLoop]: Abstraction has 1461 states and 4308 transitions. [2021-03-10 20:39:10,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:10,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 4308 transitions. [2021-03-10 20:39:10,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:10,957 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:10,957 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:10,957 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-03-10 20:39:10,957 INFO L428 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:10,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:10,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1934811012, now seen corresponding path program 145 times [2021-03-10 20:39:10,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:10,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185991955] [2021-03-10 20:39:10,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:11,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:11,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185991955] [2021-03-10 20:39:11,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:11,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:11,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868140224] [2021-03-10 20:39:11,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:11,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:11,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:11,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:11,018 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) [2021-03-10 20:39:11,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:11,184 INFO L93 Difference]: Finished difference Result 1737 states and 5065 transitions. [2021-03-10 20:39:11,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:11,185 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 [2021-03-10 20:39:11,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:11,186 INFO L225 Difference]: With dead ends: 1737 [2021-03-10 20:39:11,186 INFO L226 Difference]: Without dead ends: 1640 [2021-03-10 20:39:11,187 INFO L775 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 [2021-03-10 20:39:11,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2021-03-10 20:39:11,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1487. [2021-03-10 20:39:11,199 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) [2021-03-10 20:39:11,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 4396 transitions. [2021-03-10 20:39:11,209 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 4396 transitions. Word has length 26 [2021-03-10 20:39:11,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:11,209 INFO L480 AbstractCegarLoop]: Abstraction has 1487 states and 4396 transitions. [2021-03-10 20:39:11,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:11,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 4396 transitions. [2021-03-10 20:39:11,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:11,211 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:11,211 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:11,211 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-03-10 20:39:11,211 INFO L428 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:11,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:11,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1222743170, now seen corresponding path program 146 times [2021-03-10 20:39:11,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:11,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565668465] [2021-03-10 20:39:11,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:11,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:11,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565668465] [2021-03-10 20:39:11,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:11,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:11,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104872876] [2021-03-10 20:39:11,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:11,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:11,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:11,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:11,270 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) [2021-03-10 20:39:11,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:11,445 INFO L93 Difference]: Finished difference Result 1672 states and 4884 transitions. [2021-03-10 20:39:11,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:11,445 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:11,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:11,447 INFO L225 Difference]: With dead ends: 1672 [2021-03-10 20:39:11,447 INFO L226 Difference]: Without dead ends: 1584 [2021-03-10 20:39:11,447 INFO L775 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 [2021-03-10 20:39:11,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-03-10 20:39:11,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1485. [2021-03-10 20:39:11,460 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) [2021-03-10 20:39:11,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 4391 transitions. [2021-03-10 20:39:11,462 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 4391 transitions. Word has length 26 [2021-03-10 20:39:11,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:11,462 INFO L480 AbstractCegarLoop]: Abstraction has 1485 states and 4391 transitions. [2021-03-10 20:39:11,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:11,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 4391 transitions. [2021-03-10 20:39:11,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:11,463 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:11,463 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:11,463 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-03-10 20:39:11,463 INFO L428 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:11,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:11,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1906471334, now seen corresponding path program 147 times [2021-03-10 20:39:11,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:11,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019249316] [2021-03-10 20:39:11,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:11,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:11,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019249316] [2021-03-10 20:39:11,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:11,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:11,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386724556] [2021-03-10 20:39:11,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:11,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:11,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:11,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:11,537 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) [2021-03-10 20:39:11,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:11,715 INFO L93 Difference]: Finished difference Result 1717 states and 5001 transitions. [2021-03-10 20:39:11,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:11,715 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:11,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:11,717 INFO L225 Difference]: With dead ends: 1717 [2021-03-10 20:39:11,717 INFO L226 Difference]: Without dead ends: 1584 [2021-03-10 20:39:11,717 INFO L775 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 [2021-03-10 20:39:11,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-03-10 20:39:11,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1461. [2021-03-10 20:39:11,730 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) [2021-03-10 20:39:11,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 4317 transitions. [2021-03-10 20:39:11,732 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 4317 transitions. Word has length 26 [2021-03-10 20:39:11,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:11,732 INFO L480 AbstractCegarLoop]: Abstraction has 1461 states and 4317 transitions. [2021-03-10 20:39:11,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:11,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 4317 transitions. [2021-03-10 20:39:11,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:11,733 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:11,733 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:11,733 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-03-10 20:39:11,733 INFO L428 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:11,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:11,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1377180688, now seen corresponding path program 148 times [2021-03-10 20:39:11,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:11,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824358511] [2021-03-10 20:39:11,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:11,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:11,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824358511] [2021-03-10 20:39:11,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:11,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:11,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841068055] [2021-03-10 20:39:11,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:11,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:11,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:11,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:11,791 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) [2021-03-10 20:39:11,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:11,959 INFO L93 Difference]: Finished difference Result 1724 states and 4996 transitions. [2021-03-10 20:39:11,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:11,960 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:11,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:11,961 INFO L225 Difference]: With dead ends: 1724 [2021-03-10 20:39:11,961 INFO L226 Difference]: Without dead ends: 1544 [2021-03-10 20:39:11,962 INFO L775 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 [2021-03-10 20:39:11,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-03-10 20:39:11,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1422. [2021-03-10 20:39:11,974 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) [2021-03-10 20:39:11,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 4176 transitions. [2021-03-10 20:39:11,976 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 4176 transitions. Word has length 26 [2021-03-10 20:39:11,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:11,976 INFO L480 AbstractCegarLoop]: Abstraction has 1422 states and 4176 transitions. [2021-03-10 20:39:11,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:11,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 4176 transitions. [2021-03-10 20:39:11,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:11,977 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:11,977 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:11,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-03-10 20:39:11,977 INFO L428 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:11,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:11,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1039485756, now seen corresponding path program 149 times [2021-03-10 20:39:11,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:11,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198194840] [2021-03-10 20:39:11,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:12,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:12,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198194840] [2021-03-10 20:39:12,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:12,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:12,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904404296] [2021-03-10 20:39:12,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:12,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:12,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:12,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:12,052 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) [2021-03-10 20:39:12,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:12,231 INFO L93 Difference]: Finished difference Result 1593 states and 4622 transitions. [2021-03-10 20:39:12,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:12,231 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:12,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:12,232 INFO L225 Difference]: With dead ends: 1593 [2021-03-10 20:39:12,233 INFO L226 Difference]: Without dead ends: 1514 [2021-03-10 20:39:12,233 INFO L775 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 [2021-03-10 20:39:12,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2021-03-10 20:39:12,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1421. [2021-03-10 20:39:12,245 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) [2021-03-10 20:39:12,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 4172 transitions. [2021-03-10 20:39:12,247 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 4172 transitions. Word has length 26 [2021-03-10 20:39:12,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:12,247 INFO L480 AbstractCegarLoop]: Abstraction has 1421 states and 4172 transitions. [2021-03-10 20:39:12,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:12,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 4172 transitions. [2021-03-10 20:39:12,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:12,248 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:12,248 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:12,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-03-10 20:39:12,248 INFO L428 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:12,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:12,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1908930364, now seen corresponding path program 150 times [2021-03-10 20:39:12,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:12,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284833574] [2021-03-10 20:39:12,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:12,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:12,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284833574] [2021-03-10 20:39:12,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:12,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:12,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274551764] [2021-03-10 20:39:12,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:12,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:12,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:12,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:12,314 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) [2021-03-10 20:39:12,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:12,482 INFO L93 Difference]: Finished difference Result 1587 states and 4608 transitions. [2021-03-10 20:39:12,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:12,483 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:12,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:12,484 INFO L225 Difference]: With dead ends: 1587 [2021-03-10 20:39:12,484 INFO L226 Difference]: Without dead ends: 1483 [2021-03-10 20:39:12,484 INFO L775 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 [2021-03-10 20:39:12,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2021-03-10 20:39:12,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1422. [2021-03-10 20:39:12,496 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) [2021-03-10 20:39:12,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 4173 transitions. [2021-03-10 20:39:12,498 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 4173 transitions. Word has length 26 [2021-03-10 20:39:12,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:12,498 INFO L480 AbstractCegarLoop]: Abstraction has 1422 states and 4173 transitions. [2021-03-10 20:39:12,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:12,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 4173 transitions. [2021-03-10 20:39:12,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:12,499 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:12,499 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:12,500 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-03-10 20:39:12,500 INFO L428 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:12,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:12,500 INFO L82 PathProgramCache]: Analyzing trace with hash 440219134, now seen corresponding path program 151 times [2021-03-10 20:39:12,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:12,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767711839] [2021-03-10 20:39:12,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:12,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:12,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767711839] [2021-03-10 20:39:12,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:12,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:12,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125698193] [2021-03-10 20:39:12,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:12,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:12,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:12,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:12,561 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) [2021-03-10 20:39:12,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:12,735 INFO L93 Difference]: Finished difference Result 1574 states and 4561 transitions. [2021-03-10 20:39:12,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:12,736 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:12,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:12,737 INFO L225 Difference]: With dead ends: 1574 [2021-03-10 20:39:12,737 INFO L226 Difference]: Without dead ends: 1495 [2021-03-10 20:39:12,737 INFO L775 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 [2021-03-10 20:39:12,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2021-03-10 20:39:12,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1423. [2021-03-10 20:39:12,749 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) [2021-03-10 20:39:12,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 4177 transitions. [2021-03-10 20:39:12,751 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 4177 transitions. Word has length 26 [2021-03-10 20:39:12,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:12,751 INFO L480 AbstractCegarLoop]: Abstraction has 1423 states and 4177 transitions. [2021-03-10 20:39:12,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:12,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 4177 transitions. [2021-03-10 20:39:12,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:12,752 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:12,752 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:12,753 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-03-10 20:39:12,753 INFO L428 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:12,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:12,753 INFO L82 PathProgramCache]: Analyzing trace with hash -133178142, now seen corresponding path program 152 times [2021-03-10 20:39:12,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:12,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311385865] [2021-03-10 20:39:12,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:12,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:12,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311385865] [2021-03-10 20:39:12,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:12,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:12,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377118160] [2021-03-10 20:39:12,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:12,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:12,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:12,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:12,812 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) [2021-03-10 20:39:12,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:12,991 INFO L93 Difference]: Finished difference Result 1563 states and 4535 transitions. [2021-03-10 20:39:12,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:12,991 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:12,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:12,993 INFO L225 Difference]: With dead ends: 1563 [2021-03-10 20:39:12,993 INFO L226 Difference]: Without dead ends: 1480 [2021-03-10 20:39:12,993 INFO L775 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 [2021-03-10 20:39:12,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-03-10 20:39:13,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1424. [2021-03-10 20:39:13,005 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) [2021-03-10 20:39:13,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 4179 transitions. [2021-03-10 20:39:13,007 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 4179 transitions. Word has length 26 [2021-03-10 20:39:13,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:13,007 INFO L480 AbstractCegarLoop]: Abstraction has 1424 states and 4179 transitions. [2021-03-10 20:39:13,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:13,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 4179 transitions. [2021-03-10 20:39:13,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:13,008 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:13,008 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:13,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-03-10 20:39:13,008 INFO L428 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:13,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:13,008 INFO L82 PathProgramCache]: Analyzing trace with hash 453372706, now seen corresponding path program 153 times [2021-03-10 20:39:13,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:13,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282796525] [2021-03-10 20:39:13,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:13,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:13,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:13,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282796525] [2021-03-10 20:39:13,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:13,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:13,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409669585] [2021-03-10 20:39:13,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:13,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:13,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:13,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:13,068 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) [2021-03-10 20:39:13,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:13,242 INFO L93 Difference]: Finished difference Result 1627 states and 4733 transitions. [2021-03-10 20:39:13,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:13,242 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 [2021-03-10 20:39:13,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:13,243 INFO L225 Difference]: With dead ends: 1627 [2021-03-10 20:39:13,244 INFO L226 Difference]: Without dead ends: 1530 [2021-03-10 20:39:13,244 INFO L775 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 [2021-03-10 20:39:13,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2021-03-10 20:39:13,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1431. [2021-03-10 20:39:13,256 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) [2021-03-10 20:39:13,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 4203 transitions. [2021-03-10 20:39:13,257 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 4203 transitions. Word has length 26 [2021-03-10 20:39:13,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:13,258 INFO L480 AbstractCegarLoop]: Abstraction has 1431 states and 4203 transitions. [2021-03-10 20:39:13,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:13,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 4203 transitions. [2021-03-10 20:39:13,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:13,259 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:13,259 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:13,259 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-03-10 20:39:13,259 INFO L428 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:13,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:13,259 INFO L82 PathProgramCache]: Analyzing trace with hash -258695136, now seen corresponding path program 154 times [2021-03-10 20:39:13,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:13,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182436577] [2021-03-10 20:39:13,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:13,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:13,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182436577] [2021-03-10 20:39:13,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:13,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:13,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574491564] [2021-03-10 20:39:13,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:13,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:13,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:13,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:13,332 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) [2021-03-10 20:39:13,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:13,506 INFO L93 Difference]: Finished difference Result 1607 states and 4663 transitions. [2021-03-10 20:39:13,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:13,507 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:13,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:13,508 INFO L225 Difference]: With dead ends: 1607 [2021-03-10 20:39:13,508 INFO L226 Difference]: Without dead ends: 1519 [2021-03-10 20:39:13,508 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:13,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2021-03-10 20:39:13,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1430. [2021-03-10 20:39:13,520 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) [2021-03-10 20:39:13,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 4203 transitions. [2021-03-10 20:39:13,522 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 4203 transitions. Word has length 26 [2021-03-10 20:39:13,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:13,522 INFO L480 AbstractCegarLoop]: Abstraction has 1430 states and 4203 transitions. [2021-03-10 20:39:13,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:13,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 4203 transitions. [2021-03-10 20:39:13,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:13,524 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:13,524 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:13,524 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-03-10 20:39:13,524 INFO L428 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:13,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:13,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1952637280, now seen corresponding path program 155 times [2021-03-10 20:39:13,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:13,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687119159] [2021-03-10 20:39:13,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:13,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:13,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687119159] [2021-03-10 20:39:13,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:13,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:13,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354374197] [2021-03-10 20:39:13,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:13,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:13,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:13,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:13,583 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) [2021-03-10 20:39:13,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:13,756 INFO L93 Difference]: Finished difference Result 1567 states and 4558 transitions. [2021-03-10 20:39:13,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:13,756 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:13,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:13,758 INFO L225 Difference]: With dead ends: 1567 [2021-03-10 20:39:13,758 INFO L226 Difference]: Without dead ends: 1488 [2021-03-10 20:39:13,758 INFO L775 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 [2021-03-10 20:39:13,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2021-03-10 20:39:13,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1429. [2021-03-10 20:39:13,770 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) [2021-03-10 20:39:13,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 4199 transitions. [2021-03-10 20:39:13,771 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 4199 transitions. Word has length 26 [2021-03-10 20:39:13,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:13,772 INFO L480 AbstractCegarLoop]: Abstraction has 1429 states and 4199 transitions. [2021-03-10 20:39:13,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:13,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 4199 transitions. [2021-03-10 20:39:13,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:13,773 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:13,773 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:13,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-03-10 20:39:13,773 INFO L428 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:13,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:13,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1379240004, now seen corresponding path program 156 times [2021-03-10 20:39:13,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:13,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071592730] [2021-03-10 20:39:13,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:13,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:13,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071592730] [2021-03-10 20:39:13,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:13,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:13,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906320323] [2021-03-10 20:39:13,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:13,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:13,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:13,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:13,833 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) [2021-03-10 20:39:14,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:14,010 INFO L93 Difference]: Finished difference Result 1572 states and 4563 transitions. [2021-03-10 20:39:14,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:14,010 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:14,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:14,011 INFO L225 Difference]: With dead ends: 1572 [2021-03-10 20:39:14,012 INFO L226 Difference]: Without dead ends: 1489 [2021-03-10 20:39:14,012 INFO L775 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 [2021-03-10 20:39:14,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2021-03-10 20:39:14,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1430. [2021-03-10 20:39:14,024 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) [2021-03-10 20:39:14,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 4200 transitions. [2021-03-10 20:39:14,026 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 4200 transitions. Word has length 26 [2021-03-10 20:39:14,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:14,026 INFO L480 AbstractCegarLoop]: Abstraction has 1430 states and 4200 transitions. [2021-03-10 20:39:14,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:14,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 4200 transitions. [2021-03-10 20:39:14,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:14,027 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:14,027 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:14,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-03-10 20:39:14,027 INFO L428 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:14,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:14,027 INFO L82 PathProgramCache]: Analyzing trace with hash 560492734, now seen corresponding path program 157 times [2021-03-10 20:39:14,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:14,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250742921] [2021-03-10 20:39:14,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:14,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:14,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250742921] [2021-03-10 20:39:14,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:14,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:14,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592918607] [2021-03-10 20:39:14,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:14,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:14,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:14,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:14,086 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) [2021-03-10 20:39:14,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:14,259 INFO L93 Difference]: Finished difference Result 1645 states and 4769 transitions. [2021-03-10 20:39:14,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:14,259 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:14,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:14,261 INFO L225 Difference]: With dead ends: 1645 [2021-03-10 20:39:14,261 INFO L226 Difference]: Without dead ends: 1554 [2021-03-10 20:39:14,261 INFO L775 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 [2021-03-10 20:39:14,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-03-10 20:39:14,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1426. [2021-03-10 20:39:14,273 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) [2021-03-10 20:39:14,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4186 transitions. [2021-03-10 20:39:14,275 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4186 transitions. Word has length 26 [2021-03-10 20:39:14,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:14,275 INFO L480 AbstractCegarLoop]: Abstraction has 1426 states and 4186 transitions. [2021-03-10 20:39:14,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:14,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4186 transitions. [2021-03-10 20:39:14,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:14,276 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:14,276 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:14,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-03-10 20:39:14,276 INFO L428 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:14,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:14,277 INFO L82 PathProgramCache]: Analyzing trace with hash 130172868, now seen corresponding path program 158 times [2021-03-10 20:39:14,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:14,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039351941] [2021-03-10 20:39:14,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:14,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:14,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039351941] [2021-03-10 20:39:14,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:14,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:14,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820165816] [2021-03-10 20:39:14,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:14,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:14,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:14,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:14,339 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) [2021-03-10 20:39:14,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:14,516 INFO L93 Difference]: Finished difference Result 1595 states and 4605 transitions. [2021-03-10 20:39:14,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:14,517 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:14,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:14,518 INFO L225 Difference]: With dead ends: 1595 [2021-03-10 20:39:14,518 INFO L226 Difference]: Without dead ends: 1496 [2021-03-10 20:39:14,518 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:14,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-03-10 20:39:14,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1431. [2021-03-10 20:39:14,531 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) [2021-03-10 20:39:14,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 4196 transitions. [2021-03-10 20:39:14,532 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 4196 transitions. Word has length 26 [2021-03-10 20:39:14,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:14,532 INFO L480 AbstractCegarLoop]: Abstraction has 1431 states and 4196 transitions. [2021-03-10 20:39:14,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:14,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 4196 transitions. [2021-03-10 20:39:14,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:14,534 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:14,534 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:14,534 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-03-10 20:39:14,534 INFO L428 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:14,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:14,534 INFO L82 PathProgramCache]: Analyzing trace with hash -609950332, now seen corresponding path program 159 times [2021-03-10 20:39:14,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:14,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708349374] [2021-03-10 20:39:14,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:14,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:14,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708349374] [2021-03-10 20:39:14,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:14,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:14,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672616439] [2021-03-10 20:39:14,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:14,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:14,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:14,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:14,597 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) [2021-03-10 20:39:14,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:14,765 INFO L93 Difference]: Finished difference Result 1626 states and 4726 transitions. [2021-03-10 20:39:14,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:14,765 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:14,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:14,767 INFO L225 Difference]: With dead ends: 1626 [2021-03-10 20:39:14,767 INFO L226 Difference]: Without dead ends: 1529 [2021-03-10 20:39:14,767 INFO L775 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 [2021-03-10 20:39:14,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2021-03-10 20:39:14,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1429. [2021-03-10 20:39:14,779 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) [2021-03-10 20:39:14,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 4188 transitions. [2021-03-10 20:39:14,781 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 4188 transitions. Word has length 26 [2021-03-10 20:39:14,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:14,781 INFO L480 AbstractCegarLoop]: Abstraction has 1429 states and 4188 transitions. [2021-03-10 20:39:14,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:14,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 4188 transitions. [2021-03-10 20:39:14,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:14,782 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:14,782 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:14,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-03-10 20:39:14,782 INFO L428 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:14,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:14,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1322018174, now seen corresponding path program 160 times [2021-03-10 20:39:14,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:14,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913488014] [2021-03-10 20:39:14,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:14,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:14,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913488014] [2021-03-10 20:39:14,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:14,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:14,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224012288] [2021-03-10 20:39:14,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:14,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:14,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:14,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:14,841 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) [2021-03-10 20:39:15,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:15,013 INFO L93 Difference]: Finished difference Result 1603 states and 4654 transitions. [2021-03-10 20:39:15,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:15,013 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:15,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:15,014 INFO L225 Difference]: With dead ends: 1603 [2021-03-10 20:39:15,014 INFO L226 Difference]: Without dead ends: 1517 [2021-03-10 20:39:15,015 INFO L775 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 [2021-03-10 20:39:15,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2021-03-10 20:39:15,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1437. [2021-03-10 20:39:15,027 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) [2021-03-10 20:39:15,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 4211 transitions. [2021-03-10 20:39:15,028 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 4211 transitions. Word has length 26 [2021-03-10 20:39:15,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:15,029 INFO L480 AbstractCegarLoop]: Abstraction has 1437 states and 4211 transitions. [2021-03-10 20:39:15,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:15,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 4211 transitions. [2021-03-10 20:39:15,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:15,030 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:15,030 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:15,030 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-03-10 20:39:15,030 INFO L428 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:15,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:15,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1411777824, now seen corresponding path program 161 times [2021-03-10 20:39:15,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:15,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135099231] [2021-03-10 20:39:15,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:15,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:15,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135099231] [2021-03-10 20:39:15,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:15,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:15,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421060938] [2021-03-10 20:39:15,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:15,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:15,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:15,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:15,091 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) [2021-03-10 20:39:15,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:15,274 INFO L93 Difference]: Finished difference Result 1577 states and 4563 transitions. [2021-03-10 20:39:15,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:15,274 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 [2021-03-10 20:39:15,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:15,276 INFO L225 Difference]: With dead ends: 1577 [2021-03-10 20:39:15,276 INFO L226 Difference]: Without dead ends: 1482 [2021-03-10 20:39:15,276 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:15,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2021-03-10 20:39:15,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1420. [2021-03-10 20:39:15,288 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) [2021-03-10 20:39:15,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 4166 transitions. [2021-03-10 20:39:15,290 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 4166 transitions. Word has length 26 [2021-03-10 20:39:15,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:15,290 INFO L480 AbstractCegarLoop]: Abstraction has 1420 states and 4166 transitions. [2021-03-10 20:39:15,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:15,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 4166 transitions. [2021-03-10 20:39:15,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:15,291 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:15,291 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:15,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-03-10 20:39:15,291 INFO L428 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:15,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:15,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1692751788, now seen corresponding path program 162 times [2021-03-10 20:39:15,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:15,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831174928] [2021-03-10 20:39:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:15,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:15,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831174928] [2021-03-10 20:39:15,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:15,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:15,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061467251] [2021-03-10 20:39:15,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:15,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:15,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:15,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:15,341 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) [2021-03-10 20:39:15,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:15,476 INFO L93 Difference]: Finished difference Result 1724 states and 5023 transitions. [2021-03-10 20:39:15,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:15,476 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 [2021-03-10 20:39:15,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:15,478 INFO L225 Difference]: With dead ends: 1724 [2021-03-10 20:39:15,478 INFO L226 Difference]: Without dead ends: 1639 [2021-03-10 20:39:15,478 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:15,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-03-10 20:39:15,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1456. [2021-03-10 20:39:15,491 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) [2021-03-10 20:39:15,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 4275 transitions. [2021-03-10 20:39:15,493 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 4275 transitions. Word has length 26 [2021-03-10 20:39:15,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:15,493 INFO L480 AbstractCegarLoop]: Abstraction has 1456 states and 4275 transitions. [2021-03-10 20:39:15,493 INFO L481 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) [2021-03-10 20:39:15,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 4275 transitions. [2021-03-10 20:39:15,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:15,494 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:15,494 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:15,494 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-03-10 20:39:15,494 INFO L428 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:15,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:15,495 INFO L82 PathProgramCache]: Analyzing trace with hash 2028818232, now seen corresponding path program 163 times [2021-03-10 20:39:15,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:15,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181560952] [2021-03-10 20:39:15,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:15,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:15,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181560952] [2021-03-10 20:39:15,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:15,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:15,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847527393] [2021-03-10 20:39:15,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:15,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:15,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:15,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:15,551 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) [2021-03-10 20:39:15,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:15,723 INFO L93 Difference]: Finished difference Result 1767 states and 5149 transitions. [2021-03-10 20:39:15,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:15,723 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:15,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:15,725 INFO L225 Difference]: With dead ends: 1767 [2021-03-10 20:39:15,725 INFO L226 Difference]: Without dead ends: 1619 [2021-03-10 20:39:15,725 INFO L775 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 [2021-03-10 20:39:15,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2021-03-10 20:39:15,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1417. [2021-03-10 20:39:15,737 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) [2021-03-10 20:39:15,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 4162 transitions. [2021-03-10 20:39:15,739 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 4162 transitions. Word has length 26 [2021-03-10 20:39:15,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:15,739 INFO L480 AbstractCegarLoop]: Abstraction has 1417 states and 4162 transitions. [2021-03-10 20:39:15,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:15,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 4162 transitions. [2021-03-10 20:39:15,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:15,740 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:15,740 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:15,740 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-03-10 20:39:15,740 INFO L428 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:15,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:15,741 INFO L82 PathProgramCache]: Analyzing trace with hash 891859190, now seen corresponding path program 164 times [2021-03-10 20:39:15,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:15,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292244145] [2021-03-10 20:39:15,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:15,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:15,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292244145] [2021-03-10 20:39:15,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:15,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:15,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822058074] [2021-03-10 20:39:15,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:15,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:15,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:15,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:15,807 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) [2021-03-10 20:39:15,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:15,982 INFO L93 Difference]: Finished difference Result 1698 states and 4940 transitions. [2021-03-10 20:39:15,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:15,982 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:15,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:15,984 INFO L225 Difference]: With dead ends: 1698 [2021-03-10 20:39:15,984 INFO L226 Difference]: Without dead ends: 1613 [2021-03-10 20:39:15,984 INFO L775 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 [2021-03-10 20:39:15,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2021-03-10 20:39:15,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1419. [2021-03-10 20:39:15,997 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) [2021-03-10 20:39:15,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 4167 transitions. [2021-03-10 20:39:15,999 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 4167 transitions. Word has length 26 [2021-03-10 20:39:15,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:15,999 INFO L480 AbstractCegarLoop]: Abstraction has 1419 states and 4167 transitions. [2021-03-10 20:39:15,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:15,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 4167 transitions. [2021-03-10 20:39:16,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:16,000 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:16,000 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:16,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-03-10 20:39:16,000 INFO L428 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:16,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:16,001 INFO L82 PathProgramCache]: Analyzing trace with hash 318461914, now seen corresponding path program 165 times [2021-03-10 20:39:16,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:16,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670954291] [2021-03-10 20:39:16,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:16,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:16,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670954291] [2021-03-10 20:39:16,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:16,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:16,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204296423] [2021-03-10 20:39:16,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:16,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:16,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:16,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:16,060 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) [2021-03-10 20:39:16,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:16,244 INFO L93 Difference]: Finished difference Result 1732 states and 5057 transitions. [2021-03-10 20:39:16,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:16,244 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:16,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:16,246 INFO L225 Difference]: With dead ends: 1732 [2021-03-10 20:39:16,246 INFO L226 Difference]: Without dead ends: 1649 [2021-03-10 20:39:16,246 INFO L775 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 [2021-03-10 20:39:16,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2021-03-10 20:39:16,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1438. [2021-03-10 20:39:16,259 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) [2021-03-10 20:39:16,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4228 transitions. [2021-03-10 20:39:16,261 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4228 transitions. Word has length 26 [2021-03-10 20:39:16,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:16,261 INFO L480 AbstractCegarLoop]: Abstraction has 1438 states and 4228 transitions. [2021-03-10 20:39:16,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:16,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4228 transitions. [2021-03-10 20:39:16,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:16,262 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:16,262 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:16,262 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-03-10 20:39:16,262 INFO L428 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:16,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:16,262 INFO L82 PathProgramCache]: Analyzing trace with hash -930605222, now seen corresponding path program 166 times [2021-03-10 20:39:16,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:16,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889302943] [2021-03-10 20:39:16,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:16,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:16,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889302943] [2021-03-10 20:39:16,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:16,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:16,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712550152] [2021-03-10 20:39:16,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:16,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:16,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:16,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:16,325 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) [2021-03-10 20:39:16,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:16,500 INFO L93 Difference]: Finished difference Result 1748 states and 5073 transitions. [2021-03-10 20:39:16,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:16,500 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:16,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:16,502 INFO L225 Difference]: With dead ends: 1748 [2021-03-10 20:39:16,502 INFO L226 Difference]: Without dead ends: 1639 [2021-03-10 20:39:16,502 INFO L775 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 [2021-03-10 20:39:16,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-03-10 20:39:16,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1406. [2021-03-10 20:39:16,514 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) [2021-03-10 20:39:16,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4130 transitions. [2021-03-10 20:39:16,516 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4130 transitions. Word has length 26 [2021-03-10 20:39:16,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:16,516 INFO L480 AbstractCegarLoop]: Abstraction has 1406 states and 4130 transitions. [2021-03-10 20:39:16,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:16,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4130 transitions. [2021-03-10 20:39:16,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:16,517 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:16,517 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:16,518 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-03-10 20:39:16,518 INFO L428 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:16,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:16,518 INFO L82 PathProgramCache]: Analyzing trace with hash -781109324, now seen corresponding path program 167 times [2021-03-10 20:39:16,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:16,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724167457] [2021-03-10 20:39:16,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:16,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:16,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724167457] [2021-03-10 20:39:16,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:16,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 20:39:16,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018188296] [2021-03-10 20:39:16,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 20:39:16,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:16,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 20:39:16,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-10 20:39:16,559 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) [2021-03-10 20:39:16,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:16,663 INFO L93 Difference]: Finished difference Result 1712 states and 4985 transitions. [2021-03-10 20:39:16,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 20:39:16,664 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 [2021-03-10 20:39:16,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:16,665 INFO L225 Difference]: With dead ends: 1712 [2021-03-10 20:39:16,665 INFO L226 Difference]: Without dead ends: 1615 [2021-03-10 20:39:16,666 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.8ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-10 20:39:16,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2021-03-10 20:39:16,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1488. [2021-03-10 20:39:16,678 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) [2021-03-10 20:39:16,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 4366 transitions. [2021-03-10 20:39:16,680 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 4366 transitions. Word has length 26 [2021-03-10 20:39:16,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:16,680 INFO L480 AbstractCegarLoop]: Abstraction has 1488 states and 4366 transitions. [2021-03-10 20:39:16,680 INFO L481 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) [2021-03-10 20:39:16,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 4366 transitions. [2021-03-10 20:39:16,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:16,681 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:16,682 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:16,682 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-03-10 20:39:16,682 INFO L428 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:16,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:16,682 INFO L82 PathProgramCache]: Analyzing trace with hash 88335284, now seen corresponding path program 168 times [2021-03-10 20:39:16,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:16,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013449374] [2021-03-10 20:39:16,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:16,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:16,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013449374] [2021-03-10 20:39:16,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:16,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:16,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644566123] [2021-03-10 20:39:16,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:16,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:16,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:16,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:16,737 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) [2021-03-10 20:39:16,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:16,873 INFO L93 Difference]: Finished difference Result 1769 states and 5133 transitions. [2021-03-10 20:39:16,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:16,874 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 [2021-03-10 20:39:16,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:16,876 INFO L225 Difference]: With dead ends: 1769 [2021-03-10 20:39:16,876 INFO L226 Difference]: Without dead ends: 1570 [2021-03-10 20:39:16,876 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:16,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2021-03-10 20:39:16,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1462. [2021-03-10 20:39:16,888 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) [2021-03-10 20:39:16,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 4276 transitions. [2021-03-10 20:39:16,890 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 4276 transitions. Word has length 26 [2021-03-10 20:39:16,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:16,890 INFO L480 AbstractCegarLoop]: Abstraction has 1462 states and 4276 transitions. [2021-03-10 20:39:16,890 INFO L481 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) [2021-03-10 20:39:16,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 4276 transitions. [2021-03-10 20:39:16,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:16,891 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:16,891 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:16,891 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-03-10 20:39:16,891 INFO L428 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:16,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:16,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1796117202, now seen corresponding path program 169 times [2021-03-10 20:39:16,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:16,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370727858] [2021-03-10 20:39:16,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:16,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:16,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370727858] [2021-03-10 20:39:16,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:16,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:16,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373290673] [2021-03-10 20:39:16,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:16,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:16,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:16,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:16,941 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) [2021-03-10 20:39:17,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:17,082 INFO L93 Difference]: Finished difference Result 1668 states and 4808 transitions. [2021-03-10 20:39:17,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:17,082 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 [2021-03-10 20:39:17,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:17,084 INFO L225 Difference]: With dead ends: 1668 [2021-03-10 20:39:17,084 INFO L226 Difference]: Without dead ends: 1571 [2021-03-10 20:39:17,084 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:17,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2021-03-10 20:39:17,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1452. [2021-03-10 20:39:17,097 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) [2021-03-10 20:39:17,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 4251 transitions. [2021-03-10 20:39:17,099 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 4251 transitions. Word has length 26 [2021-03-10 20:39:17,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:17,099 INFO L480 AbstractCegarLoop]: Abstraction has 1452 states and 4251 transitions. [2021-03-10 20:39:17,099 INFO L481 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) [2021-03-10 20:39:17,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 4251 transitions. [2021-03-10 20:39:17,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:17,100 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:17,100 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:17,100 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-03-10 20:39:17,100 INFO L428 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:17,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:17,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1629405486, now seen corresponding path program 170 times [2021-03-10 20:39:17,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:17,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119878547] [2021-03-10 20:39:17,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:17,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:17,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119878547] [2021-03-10 20:39:17,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:17,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:17,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720110043] [2021-03-10 20:39:17,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:17,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:17,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:17,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:17,158 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) [2021-03-10 20:39:17,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:17,324 INFO L93 Difference]: Finished difference Result 1677 states and 4834 transitions. [2021-03-10 20:39:17,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:17,325 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 [2021-03-10 20:39:17,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:17,326 INFO L225 Difference]: With dead ends: 1677 [2021-03-10 20:39:17,326 INFO L226 Difference]: Without dead ends: 1550 [2021-03-10 20:39:17,327 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:17,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2021-03-10 20:39:17,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1470. [2021-03-10 20:39:17,339 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) [2021-03-10 20:39:17,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4287 transitions. [2021-03-10 20:39:17,341 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4287 transitions. Word has length 26 [2021-03-10 20:39:17,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:17,341 INFO L480 AbstractCegarLoop]: Abstraction has 1470 states and 4287 transitions. [2021-03-10 20:39:17,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:17,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4287 transitions. [2021-03-10 20:39:17,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:17,342 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:17,342 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:17,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-03-10 20:39:17,342 INFO L428 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:17,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:17,343 INFO L82 PathProgramCache]: Analyzing trace with hash 623453304, now seen corresponding path program 171 times [2021-03-10 20:39:17,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:17,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291399726] [2021-03-10 20:39:17,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:17,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:17,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291399726] [2021-03-10 20:39:17,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:17,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:17,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659521545] [2021-03-10 20:39:17,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:17,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:17,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:17,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:17,391 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) [2021-03-10 20:39:17,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:17,538 INFO L93 Difference]: Finished difference Result 1737 states and 5007 transitions. [2021-03-10 20:39:17,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:17,539 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 [2021-03-10 20:39:17,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:17,540 INFO L225 Difference]: With dead ends: 1737 [2021-03-10 20:39:17,540 INFO L226 Difference]: Without dead ends: 1622 [2021-03-10 20:39:17,540 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:17,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2021-03-10 20:39:17,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1476. [2021-03-10 20:39:17,553 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) [2021-03-10 20:39:17,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 4296 transitions. [2021-03-10 20:39:17,555 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 4296 transitions. Word has length 26 [2021-03-10 20:39:17,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:17,555 INFO L480 AbstractCegarLoop]: Abstraction has 1476 states and 4296 transitions. [2021-03-10 20:39:17,555 INFO L481 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) [2021-03-10 20:39:17,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 4296 transitions. [2021-03-10 20:39:17,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:17,556 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:17,556 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:17,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-03-10 20:39:17,557 INFO L428 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:17,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:17,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1210004152, now seen corresponding path program 172 times [2021-03-10 20:39:17,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:17,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574332018] [2021-03-10 20:39:17,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:17,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:17,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574332018] [2021-03-10 20:39:17,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:17,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:17,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857450194] [2021-03-10 20:39:17,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:17,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:17,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:17,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:17,614 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) [2021-03-10 20:39:17,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:17,780 INFO L93 Difference]: Finished difference Result 1779 states and 5100 transitions. [2021-03-10 20:39:17,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:17,780 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:17,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:17,782 INFO L225 Difference]: With dead ends: 1779 [2021-03-10 20:39:17,782 INFO L226 Difference]: Without dead ends: 1623 [2021-03-10 20:39:17,782 INFO L775 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 [2021-03-10 20:39:17,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2021-03-10 20:39:17,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1498. [2021-03-10 20:39:17,795 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) [2021-03-10 20:39:17,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 4362 transitions. [2021-03-10 20:39:17,797 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 4362 transitions. Word has length 26 [2021-03-10 20:39:17,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:17,797 INFO L480 AbstractCegarLoop]: Abstraction has 1498 states and 4362 transitions. [2021-03-10 20:39:17,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:17,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 4362 transitions. [2021-03-10 20:39:17,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:17,798 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:17,798 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:17,798 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-03-10 20:39:17,798 INFO L428 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:17,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:17,798 INFO L82 PathProgramCache]: Analyzing trace with hash 497936310, now seen corresponding path program 173 times [2021-03-10 20:39:17,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:17,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787669656] [2021-03-10 20:39:17,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:17,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:17,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787669656] [2021-03-10 20:39:17,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:17,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:17,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124862025] [2021-03-10 20:39:17,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:17,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:17,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:17,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:17,856 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) [2021-03-10 20:39:18,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:18,038 INFO L93 Difference]: Finished difference Result 1823 states and 5246 transitions. [2021-03-10 20:39:18,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:18,038 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:18,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:18,040 INFO L225 Difference]: With dead ends: 1823 [2021-03-10 20:39:18,040 INFO L226 Difference]: Without dead ends: 1667 [2021-03-10 20:39:18,040 INFO L775 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 [2021-03-10 20:39:18,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2021-03-10 20:39:18,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1522. [2021-03-10 20:39:18,052 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) [2021-03-10 20:39:18,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 4433 transitions. [2021-03-10 20:39:18,054 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 4433 transitions. Word has length 26 [2021-03-10 20:39:18,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:18,054 INFO L480 AbstractCegarLoop]: Abstraction has 1522 states and 4433 transitions. [2021-03-10 20:39:18,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:18,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 4433 transitions. [2021-03-10 20:39:18,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:18,056 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:18,056 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:18,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-03-10 20:39:18,056 INFO L428 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:18,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:18,056 INFO L82 PathProgramCache]: Analyzing trace with hash -465295700, now seen corresponding path program 174 times [2021-03-10 20:39:18,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:18,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383231373] [2021-03-10 20:39:18,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:18,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:18,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383231373] [2021-03-10 20:39:18,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:18,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:18,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336218256] [2021-03-10 20:39:18,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:18,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:18,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:18,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:18,104 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) [2021-03-10 20:39:18,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:18,233 INFO L93 Difference]: Finished difference Result 1900 states and 5461 transitions. [2021-03-10 20:39:18,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:18,234 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 [2021-03-10 20:39:18,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:18,235 INFO L225 Difference]: With dead ends: 1900 [2021-03-10 20:39:18,235 INFO L226 Difference]: Without dead ends: 1636 [2021-03-10 20:39:18,236 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:18,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-03-10 20:39:18,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1508. [2021-03-10 20:39:18,248 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) [2021-03-10 20:39:18,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 4358 transitions. [2021-03-10 20:39:18,250 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 4358 transitions. Word has length 26 [2021-03-10 20:39:18,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:18,250 INFO L480 AbstractCegarLoop]: Abstraction has 1508 states and 4358 transitions. [2021-03-10 20:39:18,250 INFO L481 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) [2021-03-10 20:39:18,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 4358 transitions. [2021-03-10 20:39:18,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:18,252 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:18,252 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:18,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-03-10 20:39:18,252 INFO L428 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:18,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:18,252 INFO L82 PathProgramCache]: Analyzing trace with hash -2044727346, now seen corresponding path program 175 times [2021-03-10 20:39:18,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:18,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128222773] [2021-03-10 20:39:18,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:18,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:18,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128222773] [2021-03-10 20:39:18,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:18,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:18,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512971480] [2021-03-10 20:39:18,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:18,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:18,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:18,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:18,311 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) [2021-03-10 20:39:18,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:18,475 INFO L93 Difference]: Finished difference Result 1766 states and 4965 transitions. [2021-03-10 20:39:18,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:18,475 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:18,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:18,476 INFO L225 Difference]: With dead ends: 1766 [2021-03-10 20:39:18,476 INFO L226 Difference]: Without dead ends: 1508 [2021-03-10 20:39:18,477 INFO L775 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 [2021-03-10 20:39:18,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2021-03-10 20:39:18,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1438. [2021-03-10 20:39:18,488 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) [2021-03-10 20:39:18,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4077 transitions. [2021-03-10 20:39:18,490 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4077 transitions. Word has length 26 [2021-03-10 20:39:18,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:18,490 INFO L480 AbstractCegarLoop]: Abstraction has 1438 states and 4077 transitions. [2021-03-10 20:39:18,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:18,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4077 transitions. [2021-03-10 20:39:18,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:18,491 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:18,491 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:18,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-03-10 20:39:18,491 INFO L428 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:18,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:18,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1066489600, now seen corresponding path program 176 times [2021-03-10 20:39:18,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:18,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124818652] [2021-03-10 20:39:18,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:18,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:18,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124818652] [2021-03-10 20:39:18,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:18,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:18,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286511263] [2021-03-10 20:39:18,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:18,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:18,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:18,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:18,560 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) [2021-03-10 20:39:18,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:18,737 INFO L93 Difference]: Finished difference Result 1656 states and 4633 transitions. [2021-03-10 20:39:18,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:18,737 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:18,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:18,739 INFO L225 Difference]: With dead ends: 1656 [2021-03-10 20:39:18,739 INFO L226 Difference]: Without dead ends: 1505 [2021-03-10 20:39:18,739 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:18,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2021-03-10 20:39:18,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1438. [2021-03-10 20:39:18,751 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) [2021-03-10 20:39:18,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4065 transitions. [2021-03-10 20:39:18,752 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4065 transitions. Word has length 26 [2021-03-10 20:39:18,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:18,752 INFO L480 AbstractCegarLoop]: Abstraction has 1438 states and 4065 transitions. [2021-03-10 20:39:18,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:18,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4065 transitions. [2021-03-10 20:39:18,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:18,754 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:18,754 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:18,754 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-03-10 20:39:18,754 INFO L428 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:18,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:18,754 INFO L82 PathProgramCache]: Analyzing trace with hash -479938752, now seen corresponding path program 177 times [2021-03-10 20:39:18,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:18,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62345751] [2021-03-10 20:39:18,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:18,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62345751] [2021-03-10 20:39:18,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:18,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:18,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345287082] [2021-03-10 20:39:18,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:18,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:18,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:18,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:18,815 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) [2021-03-10 20:39:18,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:18,982 INFO L93 Difference]: Finished difference Result 1661 states and 4643 transitions. [2021-03-10 20:39:18,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:18,982 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:18,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:18,984 INFO L225 Difference]: With dead ends: 1661 [2021-03-10 20:39:18,984 INFO L226 Difference]: Without dead ends: 1541 [2021-03-10 20:39:18,984 INFO L775 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 [2021-03-10 20:39:18,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2021-03-10 20:39:19,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1464. [2021-03-10 20:39:19,003 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) [2021-03-10 20:39:19,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 4141 transitions. [2021-03-10 20:39:19,004 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 4141 transitions. Word has length 26 [2021-03-10 20:39:19,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:19,004 INFO L480 AbstractCegarLoop]: Abstraction has 1464 states and 4141 transitions. [2021-03-10 20:39:19,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:19,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 4141 transitions. [2021-03-10 20:39:19,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:19,006 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:19,006 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:19,006 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-03-10 20:39:19,006 INFO L428 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:19,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:19,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1192006594, now seen corresponding path program 178 times [2021-03-10 20:39:19,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:19,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639137278] [2021-03-10 20:39:19,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:19,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:19,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639137278] [2021-03-10 20:39:19,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:19,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:19,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770818397] [2021-03-10 20:39:19,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:19,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:19,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:19,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:19,064 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) [2021-03-10 20:39:19,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:19,233 INFO L93 Difference]: Finished difference Result 1719 states and 4756 transitions. [2021-03-10 20:39:19,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:19,233 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:19,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:19,235 INFO L225 Difference]: With dead ends: 1719 [2021-03-10 20:39:19,235 INFO L226 Difference]: Without dead ends: 1599 [2021-03-10 20:39:19,235 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:19,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2021-03-10 20:39:19,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1456. [2021-03-10 20:39:19,247 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) [2021-03-10 20:39:19,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 4120 transitions. [2021-03-10 20:39:19,249 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 4120 transitions. Word has length 26 [2021-03-10 20:39:19,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:19,249 INFO L480 AbstractCegarLoop]: Abstraction has 1456 states and 4120 transitions. [2021-03-10 20:39:19,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:19,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 4120 transitions. [2021-03-10 20:39:19,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:19,250 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:19,250 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:19,250 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-03-10 20:39:19,250 INFO L428 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:19,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:19,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1037569076, now seen corresponding path program 179 times [2021-03-10 20:39:19,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:19,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956532129] [2021-03-10 20:39:19,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:19,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:19,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956532129] [2021-03-10 20:39:19,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:19,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:19,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077384155] [2021-03-10 20:39:19,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:19,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:19,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:19,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:19,308 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) [2021-03-10 20:39:19,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:19,472 INFO L93 Difference]: Finished difference Result 1748 states and 4846 transitions. [2021-03-10 20:39:19,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:19,472 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:19,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:19,473 INFO L225 Difference]: With dead ends: 1748 [2021-03-10 20:39:19,473 INFO L226 Difference]: Without dead ends: 1524 [2021-03-10 20:39:19,474 INFO L775 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 [2021-03-10 20:39:19,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2021-03-10 20:39:19,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1396. [2021-03-10 20:39:19,485 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) [2021-03-10 20:39:19,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 3950 transitions. [2021-03-10 20:39:19,487 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 3950 transitions. Word has length 26 [2021-03-10 20:39:19,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:19,487 INFO L480 AbstractCegarLoop]: Abstraction has 1396 states and 3950 transitions. [2021-03-10 20:39:19,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:19,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 3950 transitions. [2021-03-10 20:39:19,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:19,488 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:19,488 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:19,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-03-10 20:39:19,488 INFO L428 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:19,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:19,489 INFO L82 PathProgramCache]: Analyzing trace with hash 538943446, now seen corresponding path program 180 times [2021-03-10 20:39:19,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:19,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779659113] [2021-03-10 20:39:19,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:19,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779659113] [2021-03-10 20:39:19,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:19,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:19,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115916554] [2021-03-10 20:39:19,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:19,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:19,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:19,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:19,540 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) [2021-03-10 20:39:19,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:19,675 INFO L93 Difference]: Finished difference Result 1674 states and 4682 transitions. [2021-03-10 20:39:19,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:19,676 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 [2021-03-10 20:39:19,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:19,677 INFO L225 Difference]: With dead ends: 1674 [2021-03-10 20:39:19,677 INFO L226 Difference]: Without dead ends: 1589 [2021-03-10 20:39:19,677 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:19,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2021-03-10 20:39:19,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1426. [2021-03-10 20:39:19,689 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) [2021-03-10 20:39:19,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4032 transitions. [2021-03-10 20:39:19,691 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4032 transitions. Word has length 26 [2021-03-10 20:39:19,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:19,691 INFO L480 AbstractCegarLoop]: Abstraction has 1426 states and 4032 transitions. [2021-03-10 20:39:19,691 INFO L481 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) [2021-03-10 20:39:19,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4032 transitions. [2021-03-10 20:39:19,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:19,692 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:19,692 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:19,692 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-03-10 20:39:19,693 INFO L428 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:19,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:19,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1408388054, now seen corresponding path program 181 times [2021-03-10 20:39:19,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:19,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143571590] [2021-03-10 20:39:19,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:19,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:19,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143571590] [2021-03-10 20:39:19,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:19,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:19,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880859183] [2021-03-10 20:39:19,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:19,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:19,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:19,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:19,753 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) [2021-03-10 20:39:19,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:19,920 INFO L93 Difference]: Finished difference Result 1703 states and 4751 transitions. [2021-03-10 20:39:19,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:19,920 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:19,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:19,921 INFO L225 Difference]: With dead ends: 1703 [2021-03-10 20:39:19,921 INFO L226 Difference]: Without dead ends: 1516 [2021-03-10 20:39:19,922 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:19,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2021-03-10 20:39:19,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1388. [2021-03-10 20:39:19,938 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) [2021-03-10 20:39:19,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 3911 transitions. [2021-03-10 20:39:19,940 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 3911 transitions. Word has length 26 [2021-03-10 20:39:19,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:19,940 INFO L480 AbstractCegarLoop]: Abstraction has 1388 states and 3911 transitions. [2021-03-10 20:39:19,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:19,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 3911 transitions. [2021-03-10 20:39:19,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:19,941 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:19,941 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:19,941 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-03-10 20:39:19,941 INFO L428 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:19,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:19,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1178797324, now seen corresponding path program 182 times [2021-03-10 20:39:19,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:19,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22527678] [2021-03-10 20:39:19,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:20,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:20,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22527678] [2021-03-10 20:39:20,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:20,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:20,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872851778] [2021-03-10 20:39:20,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:20,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:20,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:20,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:20,001 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) [2021-03-10 20:39:20,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:20,170 INFO L93 Difference]: Finished difference Result 1583 states and 4394 transitions. [2021-03-10 20:39:20,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:20,171 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 [2021-03-10 20:39:20,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:20,172 INFO L225 Difference]: With dead ends: 1583 [2021-03-10 20:39:20,172 INFO L226 Difference]: Without dead ends: 1498 [2021-03-10 20:39:20,172 INFO L775 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 [2021-03-10 20:39:20,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2021-03-10 20:39:20,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1378. [2021-03-10 20:39:20,184 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) [2021-03-10 20:39:20,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 3890 transitions. [2021-03-10 20:39:20,185 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 3890 transitions. Word has length 26 [2021-03-10 20:39:20,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:20,185 INFO L480 AbstractCegarLoop]: Abstraction has 1378 states and 3890 transitions. [2021-03-10 20:39:20,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:20,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 3890 transitions. [2021-03-10 20:39:20,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:20,187 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:20,187 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:20,187 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-03-10 20:39:20,187 INFO L428 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:20,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:20,187 INFO L82 PathProgramCache]: Analyzing trace with hash -309352716, now seen corresponding path program 183 times [2021-03-10 20:39:20,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:20,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187191932] [2021-03-10 20:39:20,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:20,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:20,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187191932] [2021-03-10 20:39:20,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:20,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:20,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649611293] [2021-03-10 20:39:20,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:20,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:20,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:20,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:20,255 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) [2021-03-10 20:39:20,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:20,429 INFO L93 Difference]: Finished difference Result 1537 states and 4286 transitions. [2021-03-10 20:39:20,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:20,430 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:20,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:20,431 INFO L225 Difference]: With dead ends: 1537 [2021-03-10 20:39:20,431 INFO L226 Difference]: Without dead ends: 1442 [2021-03-10 20:39:20,431 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:20,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2021-03-10 20:39:20,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1390. [2021-03-10 20:39:20,443 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) [2021-03-10 20:39:20,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 3916 transitions. [2021-03-10 20:39:20,444 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 3916 transitions. Word has length 26 [2021-03-10 20:39:20,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:20,444 INFO L480 AbstractCegarLoop]: Abstraction has 1390 states and 3916 transitions. [2021-03-10 20:39:20,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:20,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 3916 transitions. [2021-03-10 20:39:20,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:20,446 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:20,446 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:20,446 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-03-10 20:39:20,446 INFO L428 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:20,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:20,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1943506074, now seen corresponding path program 184 times [2021-03-10 20:39:20,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:20,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570164199] [2021-03-10 20:39:20,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:20,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:20,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570164199] [2021-03-10 20:39:20,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:20,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:20,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605793703] [2021-03-10 20:39:20,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:20,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:20,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:20,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:20,505 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) [2021-03-10 20:39:20,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:20,647 INFO L93 Difference]: Finished difference Result 1645 states and 4600 transitions. [2021-03-10 20:39:20,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:20,647 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 [2021-03-10 20:39:20,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:20,649 INFO L225 Difference]: With dead ends: 1645 [2021-03-10 20:39:20,649 INFO L226 Difference]: Without dead ends: 1562 [2021-03-10 20:39:20,649 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:20,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2021-03-10 20:39:20,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1396. [2021-03-10 20:39:20,661 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) [2021-03-10 20:39:20,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 3925 transitions. [2021-03-10 20:39:20,662 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 3925 transitions. Word has length 26 [2021-03-10 20:39:20,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:20,662 INFO L480 AbstractCegarLoop]: Abstraction has 1396 states and 3925 transitions. [2021-03-10 20:39:20,662 INFO L481 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) [2021-03-10 20:39:20,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 3925 transitions. [2021-03-10 20:39:20,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:20,664 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:20,664 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:20,664 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-03-10 20:39:20,664 INFO L428 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:20,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:20,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1764910374, now seen corresponding path program 185 times [2021-03-10 20:39:20,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:20,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874677479] [2021-03-10 20:39:20,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:20,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:20,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874677479] [2021-03-10 20:39:20,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:20,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:20,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766918962] [2021-03-10 20:39:20,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:20,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:20,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:20,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:20,723 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) [2021-03-10 20:39:20,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:20,897 INFO L93 Difference]: Finished difference Result 1543 states and 4300 transitions. [2021-03-10 20:39:20,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:20,898 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 [2021-03-10 20:39:20,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:20,899 INFO L225 Difference]: With dead ends: 1543 [2021-03-10 20:39:20,899 INFO L226 Difference]: Without dead ends: 1455 [2021-03-10 20:39:20,899 INFO L775 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 [2021-03-10 20:39:20,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-03-10 20:39:20,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1392. [2021-03-10 20:39:20,918 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) [2021-03-10 20:39:20,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 3919 transitions. [2021-03-10 20:39:20,919 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 3919 transitions. Word has length 26 [2021-03-10 20:39:20,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:20,919 INFO L480 AbstractCegarLoop]: Abstraction has 1392 states and 3919 transitions. [2021-03-10 20:39:20,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:20,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 3919 transitions. [2021-03-10 20:39:20,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:20,921 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:20,921 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:20,921 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-03-10 20:39:20,921 INFO L428 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:20,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:20,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1817989080, now seen corresponding path program 186 times [2021-03-10 20:39:20,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:20,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056640870] [2021-03-10 20:39:20,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:20,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:20,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056640870] [2021-03-10 20:39:20,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:20,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:20,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226908523] [2021-03-10 20:39:20,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:20,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:20,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:20,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:20,986 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) [2021-03-10 20:39:21,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:21,165 INFO L93 Difference]: Finished difference Result 1684 states and 4690 transitions. [2021-03-10 20:39:21,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:21,166 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:21,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:21,167 INFO L225 Difference]: With dead ends: 1684 [2021-03-10 20:39:21,167 INFO L226 Difference]: Without dead ends: 1596 [2021-03-10 20:39:21,168 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:21,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2021-03-10 20:39:21,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1416. [2021-03-10 20:39:21,180 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) [2021-03-10 20:39:21,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 3990 transitions. [2021-03-10 20:39:21,181 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 3990 transitions. Word has length 26 [2021-03-10 20:39:21,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:21,181 INFO L480 AbstractCegarLoop]: Abstraction has 1416 states and 3990 transitions. [2021-03-10 20:39:21,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:21,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 3990 transitions. [2021-03-10 20:39:21,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:21,183 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:21,183 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:21,183 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-03-10 20:39:21,183 INFO L428 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:21,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:21,183 INFO L82 PathProgramCache]: Analyzing trace with hash 854757070, now seen corresponding path program 187 times [2021-03-10 20:39:21,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:21,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720920943] [2021-03-10 20:39:21,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:21,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:21,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720920943] [2021-03-10 20:39:21,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:21,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:21,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545063522] [2021-03-10 20:39:21,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:21,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:21,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:21,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:21,236 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) [2021-03-10 20:39:21,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:21,375 INFO L93 Difference]: Finished difference Result 1704 states and 4749 transitions. [2021-03-10 20:39:21,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:21,375 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 [2021-03-10 20:39:21,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:21,377 INFO L225 Difference]: With dead ends: 1704 [2021-03-10 20:39:21,377 INFO L226 Difference]: Without dead ends: 1544 [2021-03-10 20:39:21,377 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:21,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-03-10 20:39:21,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1404. [2021-03-10 20:39:21,388 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) [2021-03-10 20:39:21,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 3956 transitions. [2021-03-10 20:39:21,390 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 3956 transitions. Word has length 26 [2021-03-10 20:39:21,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:21,390 INFO L480 AbstractCegarLoop]: Abstraction has 1404 states and 3956 transitions. [2021-03-10 20:39:21,390 INFO L481 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) [2021-03-10 20:39:21,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 3956 transitions. [2021-03-10 20:39:21,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:21,391 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:21,391 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:21,391 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-03-10 20:39:21,391 INFO L428 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:21,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:21,392 INFO L82 PathProgramCache]: Analyzing trace with hash -724674576, now seen corresponding path program 188 times [2021-03-10 20:39:21,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:21,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098871090] [2021-03-10 20:39:21,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:21,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:21,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098871090] [2021-03-10 20:39:21,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:21,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:21,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692587917] [2021-03-10 20:39:21,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:21,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:21,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:21,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:21,453 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) [2021-03-10 20:39:21,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:21,628 INFO L93 Difference]: Finished difference Result 1611 states and 4453 transitions. [2021-03-10 20:39:21,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:21,628 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:21,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:21,629 INFO L225 Difference]: With dead ends: 1611 [2021-03-10 20:39:21,629 INFO L226 Difference]: Without dead ends: 1492 [2021-03-10 20:39:21,630 INFO L775 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 [2021-03-10 20:39:21,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-03-10 20:39:21,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1394. [2021-03-10 20:39:21,641 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) [2021-03-10 20:39:21,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 3934 transitions. [2021-03-10 20:39:21,643 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 3934 transitions. Word has length 26 [2021-03-10 20:39:21,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:21,643 INFO L480 AbstractCegarLoop]: Abstraction has 1394 states and 3934 transitions. [2021-03-10 20:39:21,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:21,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 3934 transitions. [2021-03-10 20:39:21,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:21,644 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:21,644 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:21,644 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-03-10 20:39:21,644 INFO L428 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:21,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:21,644 INFO L82 PathProgramCache]: Analyzing trace with hash -903833710, now seen corresponding path program 189 times [2021-03-10 20:39:21,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:21,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156643548] [2021-03-10 20:39:21,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:21,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:21,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156643548] [2021-03-10 20:39:21,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:21,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:21,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032587457] [2021-03-10 20:39:21,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:21,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:21,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:21,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:21,703 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) [2021-03-10 20:39:21,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:21,880 INFO L93 Difference]: Finished difference Result 1557 states and 4341 transitions. [2021-03-10 20:39:21,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:21,880 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:21,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:21,882 INFO L225 Difference]: With dead ends: 1557 [2021-03-10 20:39:21,882 INFO L226 Difference]: Without dead ends: 1472 [2021-03-10 20:39:21,882 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:21,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2021-03-10 20:39:21,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1396. [2021-03-10 20:39:21,900 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) [2021-03-10 20:39:21,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 3942 transitions. [2021-03-10 20:39:21,902 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 3942 transitions. Word has length 26 [2021-03-10 20:39:21,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:21,902 INFO L480 AbstractCegarLoop]: Abstraction has 1396 states and 3942 transitions. [2021-03-10 20:39:21,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:21,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 3942 transitions. [2021-03-10 20:39:21,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:21,903 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:21,903 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:21,903 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-03-10 20:39:21,903 INFO L428 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:21,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:21,903 INFO L82 PathProgramCache]: Analyzing trace with hash -34389102, now seen corresponding path program 190 times [2021-03-10 20:39:21,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:21,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810786230] [2021-03-10 20:39:21,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:21,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:21,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810786230] [2021-03-10 20:39:21,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:21,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:21,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610291565] [2021-03-10 20:39:21,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:21,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:21,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:21,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:21,962 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) [2021-03-10 20:39:22,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:22,143 INFO L93 Difference]: Finished difference Result 1544 states and 4317 transitions. [2021-03-10 20:39:22,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:22,144 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:22,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:22,145 INFO L225 Difference]: With dead ends: 1544 [2021-03-10 20:39:22,145 INFO L226 Difference]: Without dead ends: 1449 [2021-03-10 20:39:22,145 INFO L775 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 [2021-03-10 20:39:22,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2021-03-10 20:39:22,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 1400. [2021-03-10 20:39:22,157 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) [2021-03-10 20:39:22,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 3955 transitions. [2021-03-10 20:39:22,159 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 3955 transitions. Word has length 26 [2021-03-10 20:39:22,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:22,159 INFO L480 AbstractCegarLoop]: Abstraction has 1400 states and 3955 transitions. [2021-03-10 20:39:22,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:22,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 3955 transitions. [2021-03-10 20:39:22,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:22,160 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:22,160 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:22,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-03-10 20:39:22,160 INFO L428 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:22,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:22,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1503100332, now seen corresponding path program 191 times [2021-03-10 20:39:22,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:22,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469025872] [2021-03-10 20:39:22,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:22,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:22,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469025872] [2021-03-10 20:39:22,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:22,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:22,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342111898] [2021-03-10 20:39:22,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:22,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:22,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:22,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:22,220 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) [2021-03-10 20:39:22,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:22,395 INFO L93 Difference]: Finished difference Result 1551 states and 4333 transitions. [2021-03-10 20:39:22,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:22,396 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:22,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:22,397 INFO L225 Difference]: With dead ends: 1551 [2021-03-10 20:39:22,397 INFO L226 Difference]: Without dead ends: 1466 [2021-03-10 20:39:22,397 INFO L775 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 [2021-03-10 20:39:22,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-03-10 20:39:22,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1398. [2021-03-10 20:39:22,409 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) [2021-03-10 20:39:22,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 3948 transitions. [2021-03-10 20:39:22,410 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 3948 transitions. Word has length 26 [2021-03-10 20:39:22,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:22,410 INFO L480 AbstractCegarLoop]: Abstraction has 1398 states and 3948 transitions. [2021-03-10 20:39:22,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:22,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 3948 transitions. [2021-03-10 20:39:22,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:22,412 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:22,412 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:22,412 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-03-10 20:39:22,412 INFO L428 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:22,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:22,412 INFO L82 PathProgramCache]: Analyzing trace with hash -2076497608, now seen corresponding path program 192 times [2021-03-10 20:39:22,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:22,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659503160] [2021-03-10 20:39:22,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:22,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:22,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659503160] [2021-03-10 20:39:22,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:22,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:22,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413764442] [2021-03-10 20:39:22,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:22,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:22,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:22,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:22,478 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) [2021-03-10 20:39:22,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:22,659 INFO L93 Difference]: Finished difference Result 1561 states and 4348 transitions. [2021-03-10 20:39:22,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:22,660 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:22,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:22,661 INFO L225 Difference]: With dead ends: 1561 [2021-03-10 20:39:22,661 INFO L226 Difference]: Without dead ends: 1478 [2021-03-10 20:39:22,661 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:22,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2021-03-10 20:39:22,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1398. [2021-03-10 20:39:22,672 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) [2021-03-10 20:39:22,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 3946 transitions. [2021-03-10 20:39:22,674 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 3946 transitions. Word has length 26 [2021-03-10 20:39:22,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:22,674 INFO L480 AbstractCegarLoop]: Abstraction has 1398 states and 3946 transitions. [2021-03-10 20:39:22,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:22,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 3946 transitions. [2021-03-10 20:39:22,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:22,675 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:22,675 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:22,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-03-10 20:39:22,676 INFO L428 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:22,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:22,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1489946760, now seen corresponding path program 193 times [2021-03-10 20:39:22,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:22,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985994235] [2021-03-10 20:39:22,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:22,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:22,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985994235] [2021-03-10 20:39:22,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:22,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:22,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523288793] [2021-03-10 20:39:22,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:22,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:22,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:22,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:22,736 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) [2021-03-10 20:39:22,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:22,917 INFO L93 Difference]: Finished difference Result 1541 states and 4312 transitions. [2021-03-10 20:39:22,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:22,917 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:22,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:22,923 INFO L225 Difference]: With dead ends: 1541 [2021-03-10 20:39:22,923 INFO L226 Difference]: Without dead ends: 1453 [2021-03-10 20:39:22,923 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:22,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-03-10 20:39:22,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1399. [2021-03-10 20:39:22,934 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) [2021-03-10 20:39:22,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 3950 transitions. [2021-03-10 20:39:22,936 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 3950 transitions. Word has length 26 [2021-03-10 20:39:22,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:22,936 INFO L480 AbstractCegarLoop]: Abstraction has 1399 states and 3950 transitions. [2021-03-10 20:39:22,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:22,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 3950 transitions. [2021-03-10 20:39:22,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:22,937 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:22,937 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:22,937 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-03-10 20:39:22,937 INFO L428 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:22,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:22,937 INFO L82 PathProgramCache]: Analyzing trace with hash 2092952694, now seen corresponding path program 194 times [2021-03-10 20:39:22,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:22,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188330093] [2021-03-10 20:39:22,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:22,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:22,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188330093] [2021-03-10 20:39:22,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:22,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:22,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631253219] [2021-03-10 20:39:22,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:22,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:22,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:22,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:22,996 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) [2021-03-10 20:39:23,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:23,176 INFO L93 Difference]: Finished difference Result 1549 states and 4315 transitions. [2021-03-10 20:39:23,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:23,176 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:23,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:23,178 INFO L225 Difference]: With dead ends: 1549 [2021-03-10 20:39:23,178 INFO L226 Difference]: Without dead ends: 1461 [2021-03-10 20:39:23,178 INFO L775 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 [2021-03-10 20:39:23,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2021-03-10 20:39:23,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1400. [2021-03-10 20:39:23,189 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) [2021-03-10 20:39:23,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 3955 transitions. [2021-03-10 20:39:23,191 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 3955 transitions. Word has length 26 [2021-03-10 20:39:23,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:23,191 INFO L480 AbstractCegarLoop]: Abstraction has 1400 states and 3955 transitions. [2021-03-10 20:39:23,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:23,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 3955 transitions. [2021-03-10 20:39:23,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:23,192 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:23,192 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:23,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-03-10 20:39:23,192 INFO L428 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:23,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:23,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1110641676, now seen corresponding path program 195 times [2021-03-10 20:39:23,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:23,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810210594] [2021-03-10 20:39:23,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:23,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810210594] [2021-03-10 20:39:23,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:23,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:23,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082243249] [2021-03-10 20:39:23,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:23,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:23,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:23,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:23,253 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) [2021-03-10 20:39:23,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:23,426 INFO L93 Difference]: Finished difference Result 1607 states and 4488 transitions. [2021-03-10 20:39:23,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:23,426 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:23,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:23,428 INFO L225 Difference]: With dead ends: 1607 [2021-03-10 20:39:23,428 INFO L226 Difference]: Without dead ends: 1522 [2021-03-10 20:39:23,428 INFO L775 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 [2021-03-10 20:39:23,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-03-10 20:39:23,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1400. [2021-03-10 20:39:23,439 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) [2021-03-10 20:39:23,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 3955 transitions. [2021-03-10 20:39:23,441 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 3955 transitions. Word has length 26 [2021-03-10 20:39:23,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:23,441 INFO L480 AbstractCegarLoop]: Abstraction has 1400 states and 3955 transitions. [2021-03-10 20:39:23,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:23,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 3955 transitions. [2021-03-10 20:39:23,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:23,442 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:23,442 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:23,442 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-03-10 20:39:23,443 INFO L428 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:23,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:23,443 INFO L82 PathProgramCache]: Analyzing trace with hash -241197068, now seen corresponding path program 196 times [2021-03-10 20:39:23,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:23,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814276504] [2021-03-10 20:39:23,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:23,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:23,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814276504] [2021-03-10 20:39:23,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:23,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:23,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802185729] [2021-03-10 20:39:23,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:23,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:23,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:23,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:23,502 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) [2021-03-10 20:39:23,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:23,680 INFO L93 Difference]: Finished difference Result 1617 states and 4532 transitions. [2021-03-10 20:39:23,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:23,680 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:23,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:23,682 INFO L225 Difference]: With dead ends: 1617 [2021-03-10 20:39:23,682 INFO L226 Difference]: Without dead ends: 1522 [2021-03-10 20:39:23,682 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:23,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-03-10 20:39:23,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1407. [2021-03-10 20:39:23,694 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) [2021-03-10 20:39:23,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 3972 transitions. [2021-03-10 20:39:23,695 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 3972 transitions. Word has length 26 [2021-03-10 20:39:23,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:23,695 INFO L480 AbstractCegarLoop]: Abstraction has 1407 states and 3972 transitions. [2021-03-10 20:39:23,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:23,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 3972 transitions. [2021-03-10 20:39:23,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:23,697 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:23,697 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:23,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-03-10 20:39:23,697 INFO L428 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:23,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:23,697 INFO L82 PathProgramCache]: Analyzing trace with hash -495542802, now seen corresponding path program 197 times [2021-03-10 20:39:23,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:23,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648428631] [2021-03-10 20:39:23,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:23,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:23,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648428631] [2021-03-10 20:39:23,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:23,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:23,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392435250] [2021-03-10 20:39:23,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:23,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:23,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:23,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:23,758 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) [2021-03-10 20:39:23,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:23,942 INFO L93 Difference]: Finished difference Result 1602 states and 4492 transitions. [2021-03-10 20:39:23,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:23,942 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:23,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:23,944 INFO L225 Difference]: With dead ends: 1602 [2021-03-10 20:39:23,944 INFO L226 Difference]: Without dead ends: 1502 [2021-03-10 20:39:23,944 INFO L775 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 [2021-03-10 20:39:23,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2021-03-10 20:39:23,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1405. [2021-03-10 20:39:23,955 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) [2021-03-10 20:39:23,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 3969 transitions. [2021-03-10 20:39:23,957 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 3969 transitions. Word has length 26 [2021-03-10 20:39:23,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:23,957 INFO L480 AbstractCegarLoop]: Abstraction has 1405 states and 3969 transitions. [2021-03-10 20:39:23,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:23,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 3969 transitions. [2021-03-10 20:39:23,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:23,958 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:23,958 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:23,958 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-03-10 20:39:23,958 INFO L428 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:23,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:23,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1813146598, now seen corresponding path program 198 times [2021-03-10 20:39:23,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:23,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369222370] [2021-03-10 20:39:23,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:24,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:24,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369222370] [2021-03-10 20:39:24,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:24,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:24,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615175025] [2021-03-10 20:39:24,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:24,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:24,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:24,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:24,009 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) [2021-03-10 20:39:24,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:24,149 INFO L93 Difference]: Finished difference Result 1611 states and 4507 transitions. [2021-03-10 20:39:24,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:24,149 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 [2021-03-10 20:39:24,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:24,151 INFO L225 Difference]: With dead ends: 1611 [2021-03-10 20:39:24,151 INFO L226 Difference]: Without dead ends: 1524 [2021-03-10 20:39:24,151 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:24,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2021-03-10 20:39:24,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1406. [2021-03-10 20:39:24,163 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) [2021-03-10 20:39:24,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 3972 transitions. [2021-03-10 20:39:24,164 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 3972 transitions. Word has length 26 [2021-03-10 20:39:24,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:24,164 INFO L480 AbstractCegarLoop]: Abstraction has 1406 states and 3972 transitions. [2021-03-10 20:39:24,164 INFO L481 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) [2021-03-10 20:39:24,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 3972 transitions. [2021-03-10 20:39:24,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:24,166 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:24,166 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:24,166 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-03-10 20:39:24,166 INFO L428 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:24,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:24,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1741697498, now seen corresponding path program 199 times [2021-03-10 20:39:24,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:24,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604542988] [2021-03-10 20:39:24,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:24,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:24,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604542988] [2021-03-10 20:39:24,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:24,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:24,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207397915] [2021-03-10 20:39:24,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:24,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:24,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:24,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:24,230 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) [2021-03-10 20:39:24,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:24,407 INFO L93 Difference]: Finished difference Result 1550 states and 4346 transitions. [2021-03-10 20:39:24,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:24,408 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:24,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:24,409 INFO L225 Difference]: With dead ends: 1550 [2021-03-10 20:39:24,409 INFO L226 Difference]: Without dead ends: 1462 [2021-03-10 20:39:24,409 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:24,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2021-03-10 20:39:24,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1408. [2021-03-10 20:39:24,421 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) [2021-03-10 20:39:24,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 3979 transitions. [2021-03-10 20:39:24,423 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 3979 transitions. Word has length 26 [2021-03-10 20:39:24,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:24,423 INFO L480 AbstractCegarLoop]: Abstraction has 1408 states and 3979 transitions. [2021-03-10 20:39:24,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:24,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 3979 transitions. [2021-03-10 20:39:24,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:24,424 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:24,424 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:24,424 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-03-10 20:39:24,424 INFO L428 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:24,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:24,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1029629656, now seen corresponding path program 200 times [2021-03-10 20:39:24,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:24,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284505226] [2021-03-10 20:39:24,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:24,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:24,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284505226] [2021-03-10 20:39:24,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:24,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:24,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12794052] [2021-03-10 20:39:24,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:24,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:24,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:24,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:24,488 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) [2021-03-10 20:39:24,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:24,670 INFO L93 Difference]: Finished difference Result 1554 states and 4338 transitions. [2021-03-10 20:39:24,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:24,670 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:24,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:24,671 INFO L225 Difference]: With dead ends: 1554 [2021-03-10 20:39:24,671 INFO L226 Difference]: Without dead ends: 1468 [2021-03-10 20:39:24,672 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:24,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2021-03-10 20:39:24,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1407. [2021-03-10 20:39:24,683 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) [2021-03-10 20:39:24,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 3972 transitions. [2021-03-10 20:39:24,685 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 3972 transitions. Word has length 26 [2021-03-10 20:39:24,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:24,685 INFO L480 AbstractCegarLoop]: Abstraction has 1407 states and 3972 transitions. [2021-03-10 20:39:24,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:24,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 3972 transitions. [2021-03-10 20:39:24,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:24,686 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:24,686 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:24,686 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-03-10 20:39:24,686 INFO L428 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:24,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:24,686 INFO L82 PathProgramCache]: Analyzing trace with hash 349552952, now seen corresponding path program 201 times [2021-03-10 20:39:24,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:24,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499164707] [2021-03-10 20:39:24,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:24,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:24,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499164707] [2021-03-10 20:39:24,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:24,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:24,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879649257] [2021-03-10 20:39:24,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:24,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:24,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:24,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:24,745 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) [2021-03-10 20:39:24,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:24,926 INFO L93 Difference]: Finished difference Result 1620 states and 4536 transitions. [2021-03-10 20:39:24,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:24,926 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:24,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:24,928 INFO L225 Difference]: With dead ends: 1620 [2021-03-10 20:39:24,928 INFO L226 Difference]: Without dead ends: 1523 [2021-03-10 20:39:24,928 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:24,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-03-10 20:39:24,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1419. [2021-03-10 20:39:24,939 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) [2021-03-10 20:39:24,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 4001 transitions. [2021-03-10 20:39:24,941 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 4001 transitions. Word has length 26 [2021-03-10 20:39:24,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:24,941 INFO L480 AbstractCegarLoop]: Abstraction has 1419 states and 4001 transitions. [2021-03-10 20:39:24,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:24,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 4001 transitions. [2021-03-10 20:39:24,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:24,942 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:24,942 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:24,942 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-03-10 20:39:24,942 INFO L428 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:24,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:24,942 INFO L82 PathProgramCache]: Analyzing trace with hash 939870006, now seen corresponding path program 202 times [2021-03-10 20:39:24,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:24,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860765840] [2021-03-10 20:39:24,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:25,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:25,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860765840] [2021-03-10 20:39:25,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:25,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:25,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680493035] [2021-03-10 20:39:25,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:25,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:25,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:25,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:25,015 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) [2021-03-10 20:39:25,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:25,192 INFO L93 Difference]: Finished difference Result 1652 states and 4605 transitions. [2021-03-10 20:39:25,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:25,192 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:25,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:25,194 INFO L225 Difference]: With dead ends: 1652 [2021-03-10 20:39:25,194 INFO L226 Difference]: Without dead ends: 1563 [2021-03-10 20:39:25,194 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:25,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2021-03-10 20:39:25,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1418. [2021-03-10 20:39:25,206 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) [2021-03-10 20:39:25,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 4000 transitions. [2021-03-10 20:39:25,208 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 4000 transitions. Word has length 26 [2021-03-10 20:39:25,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:25,208 INFO L480 AbstractCegarLoop]: Abstraction has 1418 states and 4000 transitions. [2021-03-10 20:39:25,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:25,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 4000 transitions. [2021-03-10 20:39:25,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:25,209 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:25,209 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:25,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-03-10 20:39:25,209 INFO L428 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:25,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:25,209 INFO L82 PathProgramCache]: Analyzing trace with hash -2043486036, now seen corresponding path program 203 times [2021-03-10 20:39:25,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:25,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264575554] [2021-03-10 20:39:25,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:25,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:25,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264575554] [2021-03-10 20:39:25,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:25,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:25,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586051753] [2021-03-10 20:39:25,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:25,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:25,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:25,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:25,259 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) [2021-03-10 20:39:25,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:25,396 INFO L93 Difference]: Finished difference Result 1692 states and 4710 transitions. [2021-03-10 20:39:25,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:25,397 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 [2021-03-10 20:39:25,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:25,398 INFO L225 Difference]: With dead ends: 1692 [2021-03-10 20:39:25,398 INFO L226 Difference]: Without dead ends: 1504 [2021-03-10 20:39:25,398 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:25,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2021-03-10 20:39:25,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1400. [2021-03-10 20:39:25,410 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) [2021-03-10 20:39:25,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 3920 transitions. [2021-03-10 20:39:25,411 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 3920 transitions. Word has length 26 [2021-03-10 20:39:25,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:25,412 INFO L480 AbstractCegarLoop]: Abstraction has 1400 states and 3920 transitions. [2021-03-10 20:39:25,412 INFO L481 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) [2021-03-10 20:39:25,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 3920 transitions. [2021-03-10 20:39:25,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:25,413 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:25,413 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:25,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-03-10 20:39:25,413 INFO L428 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:25,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:25,413 INFO L82 PathProgramCache]: Analyzing trace with hash 672049614, now seen corresponding path program 204 times [2021-03-10 20:39:25,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:25,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568061029] [2021-03-10 20:39:25,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:25,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:25,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568061029] [2021-03-10 20:39:25,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:25,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:25,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531764975] [2021-03-10 20:39:25,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:25,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:25,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:25,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:25,472 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) [2021-03-10 20:39:25,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:25,643 INFO L93 Difference]: Finished difference Result 1597 states and 4423 transitions. [2021-03-10 20:39:25,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:25,644 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:25,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:25,645 INFO L225 Difference]: With dead ends: 1597 [2021-03-10 20:39:25,645 INFO L226 Difference]: Without dead ends: 1470 [2021-03-10 20:39:25,645 INFO L775 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 [2021-03-10 20:39:25,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2021-03-10 20:39:25,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1368. [2021-03-10 20:39:25,656 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) [2021-03-10 20:39:25,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 3839 transitions. [2021-03-10 20:39:25,658 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 3839 transitions. Word has length 26 [2021-03-10 20:39:25,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:25,658 INFO L480 AbstractCegarLoop]: Abstraction has 1368 states and 3839 transitions. [2021-03-10 20:39:25,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:25,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 3839 transitions. [2021-03-10 20:39:25,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:25,659 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:25,659 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:25,659 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-03-10 20:39:25,659 INFO L428 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:25,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:25,660 INFO L82 PathProgramCache]: Analyzing trace with hash 680919408, now seen corresponding path program 205 times [2021-03-10 20:39:25,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:25,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193911417] [2021-03-10 20:39:25,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:25,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:25,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193911417] [2021-03-10 20:39:25,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:25,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:25,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127961331] [2021-03-10 20:39:25,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:25,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:25,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:25,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:25,718 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) [2021-03-10 20:39:25,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:25,890 INFO L93 Difference]: Finished difference Result 1512 states and 4214 transitions. [2021-03-10 20:39:25,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:25,891 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:25,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:25,892 INFO L225 Difference]: With dead ends: 1512 [2021-03-10 20:39:25,892 INFO L226 Difference]: Without dead ends: 1424 [2021-03-10 20:39:25,892 INFO L775 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 [2021-03-10 20:39:25,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2021-03-10 20:39:25,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1371. [2021-03-10 20:39:25,907 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) [2021-03-10 20:39:25,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 3847 transitions. [2021-03-10 20:39:25,909 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 3847 transitions. Word has length 26 [2021-03-10 20:39:25,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:25,909 INFO L480 AbstractCegarLoop]: Abstraction has 1371 states and 3847 transitions. [2021-03-10 20:39:25,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:25,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 3847 transitions. [2021-03-10 20:39:25,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:25,910 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:25,910 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:25,910 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-03-10 20:39:25,910 INFO L428 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:25,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:25,911 INFO L82 PathProgramCache]: Analyzing trace with hash -31148434, now seen corresponding path program 206 times [2021-03-10 20:39:25,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:25,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836663801] [2021-03-10 20:39:25,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:25,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836663801] [2021-03-10 20:39:25,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:25,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:25,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137720814] [2021-03-10 20:39:25,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:25,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:25,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:25,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:25,969 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) [2021-03-10 20:39:26,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:26,144 INFO L93 Difference]: Finished difference Result 1563 states and 4321 transitions. [2021-03-10 20:39:26,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:26,144 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:26,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:26,146 INFO L225 Difference]: With dead ends: 1563 [2021-03-10 20:39:26,146 INFO L226 Difference]: Without dead ends: 1477 [2021-03-10 20:39:26,146 INFO L775 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 [2021-03-10 20:39:26,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2021-03-10 20:39:26,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 1369. [2021-03-10 20:39:26,157 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) [2021-03-10 20:39:26,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 3839 transitions. [2021-03-10 20:39:26,159 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 3839 transitions. Word has length 26 [2021-03-10 20:39:26,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:26,159 INFO L480 AbstractCegarLoop]: Abstraction has 1369 states and 3839 transitions. [2021-03-10 20:39:26,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:26,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 3839 transitions. [2021-03-10 20:39:26,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:26,160 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:26,160 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:26,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-03-10 20:39:26,160 INFO L428 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:26,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:26,161 INFO L82 PathProgramCache]: Analyzing trace with hash -711225138, now seen corresponding path program 207 times [2021-03-10 20:39:26,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:26,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592098111] [2021-03-10 20:39:26,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:26,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:26,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592098111] [2021-03-10 20:39:26,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:26,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:26,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293140708] [2021-03-10 20:39:26,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:26,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:26,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:26,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:26,220 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) [2021-03-10 20:39:26,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:26,392 INFO L93 Difference]: Finished difference Result 1575 states and 4380 transitions. [2021-03-10 20:39:26,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:26,392 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:26,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:26,393 INFO L225 Difference]: With dead ends: 1575 [2021-03-10 20:39:26,393 INFO L226 Difference]: Without dead ends: 1464 [2021-03-10 20:39:26,394 INFO L775 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 [2021-03-10 20:39:26,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-03-10 20:39:26,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1349. [2021-03-10 20:39:26,405 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) [2021-03-10 20:39:26,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 3784 transitions. [2021-03-10 20:39:26,406 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 3784 transitions. Word has length 26 [2021-03-10 20:39:26,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:26,406 INFO L480 AbstractCegarLoop]: Abstraction has 1349 states and 3784 transitions. [2021-03-10 20:39:26,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:26,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 3784 transitions. [2021-03-10 20:39:26,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:26,408 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:26,408 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:26,408 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-03-10 20:39:26,408 INFO L428 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:26,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:26,408 INFO L82 PathProgramCache]: Analyzing trace with hash 40111740, now seen corresponding path program 208 times [2021-03-10 20:39:26,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:26,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256574711] [2021-03-10 20:39:26,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:26,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:26,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256574711] [2021-03-10 20:39:26,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:26,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:26,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226638823] [2021-03-10 20:39:26,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:26,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:26,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:26,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:26,458 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) [2021-03-10 20:39:26,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:26,598 INFO L93 Difference]: Finished difference Result 1533 states and 4263 transitions. [2021-03-10 20:39:26,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:26,598 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 [2021-03-10 20:39:26,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:26,599 INFO L225 Difference]: With dead ends: 1533 [2021-03-10 20:39:26,599 INFO L226 Difference]: Without dead ends: 1448 [2021-03-10 20:39:26,600 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:26,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2021-03-10 20:39:26,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1355. [2021-03-10 20:39:26,610 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) [2021-03-10 20:39:26,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 3794 transitions. [2021-03-10 20:39:26,612 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 3794 transitions. Word has length 26 [2021-03-10 20:39:26,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:26,612 INFO L480 AbstractCegarLoop]: Abstraction has 1355 states and 3794 transitions. [2021-03-10 20:39:26,612 INFO L481 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) [2021-03-10 20:39:26,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 3794 transitions. [2021-03-10 20:39:26,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:26,613 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:26,613 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:26,613 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-03-10 20:39:26,613 INFO L428 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:26,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:26,614 INFO L82 PathProgramCache]: Analyzing trace with hash 909556348, now seen corresponding path program 209 times [2021-03-10 20:39:26,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:26,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943351625] [2021-03-10 20:39:26,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:26,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:26,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943351625] [2021-03-10 20:39:26,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:26,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:26,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490328814] [2021-03-10 20:39:26,667 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:26,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:26,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:26,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:26,668 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) [2021-03-10 20:39:26,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:26,818 INFO L93 Difference]: Finished difference Result 1554 states and 4325 transitions. [2021-03-10 20:39:26,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:26,818 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 [2021-03-10 20:39:26,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:26,819 INFO L225 Difference]: With dead ends: 1554 [2021-03-10 20:39:26,819 INFO L226 Difference]: Without dead ends: 1459 [2021-03-10 20:39:26,820 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:26,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2021-03-10 20:39:26,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1367. [2021-03-10 20:39:26,830 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) [2021-03-10 20:39:26,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 3823 transitions. [2021-03-10 20:39:26,832 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 3823 transitions. Word has length 26 [2021-03-10 20:39:26,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:26,832 INFO L480 AbstractCegarLoop]: Abstraction has 1367 states and 3823 transitions. [2021-03-10 20:39:26,832 INFO L481 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) [2021-03-10 20:39:26,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 3823 transitions. [2021-03-10 20:39:26,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:26,833 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:26,833 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:26,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-03-10 20:39:26,834 INFO L428 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:26,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:26,834 INFO L82 PathProgramCache]: Analyzing trace with hash -559154882, now seen corresponding path program 210 times [2021-03-10 20:39:26,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:26,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141744691] [2021-03-10 20:39:26,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:26,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:26,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141744691] [2021-03-10 20:39:26,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:26,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:26,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194052998] [2021-03-10 20:39:26,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:26,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:26,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:26,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:26,900 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) [2021-03-10 20:39:27,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:27,077 INFO L93 Difference]: Finished difference Result 1615 states and 4457 transitions. [2021-03-10 20:39:27,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:27,077 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:27,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:27,078 INFO L225 Difference]: With dead ends: 1615 [2021-03-10 20:39:27,078 INFO L226 Difference]: Without dead ends: 1530 [2021-03-10 20:39:27,078 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:27,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2021-03-10 20:39:27,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1391. [2021-03-10 20:39:27,090 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) [2021-03-10 20:39:27,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 3889 transitions. [2021-03-10 20:39:27,092 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 3889 transitions. Word has length 26 [2021-03-10 20:39:27,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:27,092 INFO L480 AbstractCegarLoop]: Abstraction has 1391 states and 3889 transitions. [2021-03-10 20:39:27,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:27,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 3889 transitions. [2021-03-10 20:39:27,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:27,093 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:27,093 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:27,093 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-03-10 20:39:27,093 INFO L428 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:27,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:27,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1132552158, now seen corresponding path program 211 times [2021-03-10 20:39:27,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:27,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232219587] [2021-03-10 20:39:27,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:27,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:27,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232219587] [2021-03-10 20:39:27,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:27,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:27,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155885887] [2021-03-10 20:39:27,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:27,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:27,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:27,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:27,165 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) [2021-03-10 20:39:27,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:27,343 INFO L93 Difference]: Finished difference Result 1549 states and 4282 transitions. [2021-03-10 20:39:27,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:27,344 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:27,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:27,345 INFO L225 Difference]: With dead ends: 1549 [2021-03-10 20:39:27,345 INFO L226 Difference]: Without dead ends: 1466 [2021-03-10 20:39:27,345 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:27,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-03-10 20:39:27,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1397. [2021-03-10 20:39:27,357 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) [2021-03-10 20:39:27,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 3897 transitions. [2021-03-10 20:39:27,359 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 3897 transitions. Word has length 26 [2021-03-10 20:39:27,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:27,359 INFO L480 AbstractCegarLoop]: Abstraction has 1397 states and 3897 transitions. [2021-03-10 20:39:27,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:27,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 3897 transitions. [2021-03-10 20:39:27,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:27,360 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:27,360 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:27,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-03-10 20:39:27,360 INFO L428 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:27,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:27,360 INFO L82 PathProgramCache]: Analyzing trace with hash -546001310, now seen corresponding path program 212 times [2021-03-10 20:39:27,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:27,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138211021] [2021-03-10 20:39:27,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:27,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:27,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138211021] [2021-03-10 20:39:27,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:27,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:27,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989654750] [2021-03-10 20:39:27,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:27,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:27,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:27,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:27,423 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) [2021-03-10 20:39:27,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:27,600 INFO L93 Difference]: Finished difference Result 1624 states and 4492 transitions. [2021-03-10 20:39:27,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:27,601 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:27,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:27,602 INFO L225 Difference]: With dead ends: 1624 [2021-03-10 20:39:27,602 INFO L226 Difference]: Without dead ends: 1536 [2021-03-10 20:39:27,602 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:27,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2021-03-10 20:39:27,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1423. [2021-03-10 20:39:27,614 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) [2021-03-10 20:39:27,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 3973 transitions. [2021-03-10 20:39:27,616 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 3973 transitions. Word has length 26 [2021-03-10 20:39:27,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:27,616 INFO L480 AbstractCegarLoop]: Abstraction has 1423 states and 3973 transitions. [2021-03-10 20:39:27,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:27,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 3973 transitions. [2021-03-10 20:39:27,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:27,617 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:27,617 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:27,617 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-03-10 20:39:27,617 INFO L428 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:27,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:27,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1258069152, now seen corresponding path program 213 times [2021-03-10 20:39:27,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:27,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13870792] [2021-03-10 20:39:27,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:27,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:27,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13870792] [2021-03-10 20:39:27,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:27,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:27,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752312014] [2021-03-10 20:39:27,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:27,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:27,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:27,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:27,678 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) [2021-03-10 20:39:27,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:27,856 INFO L93 Difference]: Finished difference Result 1572 states and 4345 transitions. [2021-03-10 20:39:27,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:27,857 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 [2021-03-10 20:39:27,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:27,858 INFO L225 Difference]: With dead ends: 1572 [2021-03-10 20:39:27,858 INFO L226 Difference]: Without dead ends: 1484 [2021-03-10 20:39:27,858 INFO L775 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 [2021-03-10 20:39:27,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2021-03-10 20:39:27,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1415. [2021-03-10 20:39:27,870 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) [2021-03-10 20:39:27,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 3958 transitions. [2021-03-10 20:39:27,878 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 3958 transitions. Word has length 26 [2021-03-10 20:39:27,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:27,879 INFO L480 AbstractCegarLoop]: Abstraction has 1415 states and 3958 transitions. [2021-03-10 20:39:27,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:27,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 3958 transitions. [2021-03-10 20:39:27,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:27,880 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:27,880 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:27,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-03-10 20:39:27,880 INFO L428 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:27,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:27,880 INFO L82 PathProgramCache]: Analyzing trace with hash -92316360, now seen corresponding path program 214 times [2021-03-10 20:39:27,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:27,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830764056] [2021-03-10 20:39:27,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:27,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:27,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830764056] [2021-03-10 20:39:27,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:27,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:27,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419743321] [2021-03-10 20:39:27,939 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:27,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:27,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:27,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:27,939 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) [2021-03-10 20:39:28,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:28,134 INFO L93 Difference]: Finished difference Result 1653 states and 4558 transitions. [2021-03-10 20:39:28,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:28,134 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:28,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:28,136 INFO L225 Difference]: With dead ends: 1653 [2021-03-10 20:39:28,136 INFO L226 Difference]: Without dead ends: 1514 [2021-03-10 20:39:28,136 INFO L775 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 [2021-03-10 20:39:28,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2021-03-10 20:39:28,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1381. [2021-03-10 20:39:28,147 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) [2021-03-10 20:39:28,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 3860 transitions. [2021-03-10 20:39:28,149 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 3860 transitions. Word has length 26 [2021-03-10 20:39:28,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:28,149 INFO L480 AbstractCegarLoop]: Abstraction has 1381 states and 3860 transitions. [2021-03-10 20:39:28,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:28,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 3860 transitions. [2021-03-10 20:39:28,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:28,150 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:28,150 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:28,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-03-10 20:39:28,150 INFO L428 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:28,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:28,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1103631634, now seen corresponding path program 215 times [2021-03-10 20:39:28,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:28,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335956337] [2021-03-10 20:39:28,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:28,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:28,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335956337] [2021-03-10 20:39:28,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:28,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:28,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254803330] [2021-03-10 20:39:28,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:28,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:28,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:28,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:28,211 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) [2021-03-10 20:39:28,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:28,387 INFO L93 Difference]: Finished difference Result 1627 states and 4481 transitions. [2021-03-10 20:39:28,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:28,387 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:28,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:28,389 INFO L225 Difference]: With dead ends: 1627 [2021-03-10 20:39:28,389 INFO L226 Difference]: Without dead ends: 1465 [2021-03-10 20:39:28,389 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:28,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2021-03-10 20:39:28,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1360. [2021-03-10 20:39:28,400 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) [2021-03-10 20:39:28,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 3804 transitions. [2021-03-10 20:39:28,401 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 3804 transitions. Word has length 26 [2021-03-10 20:39:28,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:28,401 INFO L480 AbstractCegarLoop]: Abstraction has 1360 states and 3804 transitions. [2021-03-10 20:39:28,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:28,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 3804 transitions. [2021-03-10 20:39:28,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:28,403 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:28,403 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:28,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-03-10 20:39:28,403 INFO L428 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:28,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:28,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1441326566, now seen corresponding path program 216 times [2021-03-10 20:39:28,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:28,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795570161] [2021-03-10 20:39:28,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:28,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:28,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795570161] [2021-03-10 20:39:28,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:28,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:28,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408364327] [2021-03-10 20:39:28,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:28,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:28,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:28,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:28,478 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) [2021-03-10 20:39:28,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:28,653 INFO L93 Difference]: Finished difference Result 1494 states and 4137 transitions. [2021-03-10 20:39:28,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:28,654 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:28,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:28,655 INFO L225 Difference]: With dead ends: 1494 [2021-03-10 20:39:28,655 INFO L226 Difference]: Without dead ends: 1409 [2021-03-10 20:39:28,655 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:28,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2021-03-10 20:39:28,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1353. [2021-03-10 20:39:28,666 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) [2021-03-10 20:39:28,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 3778 transitions. [2021-03-10 20:39:28,667 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 3778 transitions. Word has length 26 [2021-03-10 20:39:28,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:28,667 INFO L480 AbstractCegarLoop]: Abstraction has 1353 states and 3778 transitions. [2021-03-10 20:39:28,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:28,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 3778 transitions. [2021-03-10 20:39:28,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:28,669 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:28,669 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:28,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-03-10 20:39:28,669 INFO L428 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:28,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:28,669 INFO L82 PathProgramCache]: Analyzing trace with hash -571881958, now seen corresponding path program 217 times [2021-03-10 20:39:28,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:28,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162921629] [2021-03-10 20:39:28,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:28,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:28,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162921629] [2021-03-10 20:39:28,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:28,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:28,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661118137] [2021-03-10 20:39:28,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:28,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:28,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:28,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:28,731 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) [2021-03-10 20:39:28,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:28,907 INFO L93 Difference]: Finished difference Result 1511 states and 4172 transitions. [2021-03-10 20:39:28,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:28,908 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 [2021-03-10 20:39:28,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:28,909 INFO L225 Difference]: With dead ends: 1511 [2021-03-10 20:39:28,909 INFO L226 Difference]: Without dead ends: 1416 [2021-03-10 20:39:28,909 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:28,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-03-10 20:39:28,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1354. [2021-03-10 20:39:28,924 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) [2021-03-10 20:39:28,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 3779 transitions. [2021-03-10 20:39:28,926 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 3779 transitions. Word has length 26 [2021-03-10 20:39:28,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:28,926 INFO L480 AbstractCegarLoop]: Abstraction has 1354 states and 3779 transitions. [2021-03-10 20:39:28,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:28,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 3779 transitions. [2021-03-10 20:39:28,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:28,927 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:28,927 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:28,927 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-03-10 20:39:28,928 INFO L428 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:28,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:28,928 INFO L82 PathProgramCache]: Analyzing trace with hash -2040593188, now seen corresponding path program 218 times [2021-03-10 20:39:28,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:28,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809798583] [2021-03-10 20:39:28,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:28,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:28,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809798583] [2021-03-10 20:39:28,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:28,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:28,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183074086] [2021-03-10 20:39:28,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:28,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:28,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:28,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:28,987 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) [2021-03-10 20:39:29,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:29,163 INFO L93 Difference]: Finished difference Result 1525 states and 4210 transitions. [2021-03-10 20:39:29,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:29,164 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:29,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:29,165 INFO L225 Difference]: With dead ends: 1525 [2021-03-10 20:39:29,165 INFO L226 Difference]: Without dead ends: 1440 [2021-03-10 20:39:29,165 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:29,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2021-03-10 20:39:29,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1356. [2021-03-10 20:39:29,176 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) [2021-03-10 20:39:29,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 3787 transitions. [2021-03-10 20:39:29,178 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 3787 transitions. Word has length 26 [2021-03-10 20:39:29,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:29,178 INFO L480 AbstractCegarLoop]: Abstraction has 1356 states and 3787 transitions. [2021-03-10 20:39:29,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:29,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 3787 transitions. [2021-03-10 20:39:29,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:29,179 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:29,179 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:29,179 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-03-10 20:39:29,179 INFO L428 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:29,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:29,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1680976832, now seen corresponding path program 219 times [2021-03-10 20:39:29,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:29,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934208946] [2021-03-10 20:39:29,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:29,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:29,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934208946] [2021-03-10 20:39:29,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:29,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:29,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233833118] [2021-03-10 20:39:29,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:29,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:29,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:29,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:29,241 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) [2021-03-10 20:39:29,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:29,419 INFO L93 Difference]: Finished difference Result 1497 states and 4138 transitions. [2021-03-10 20:39:29,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:29,419 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 [2021-03-10 20:39:29,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:29,421 INFO L225 Difference]: With dead ends: 1497 [2021-03-10 20:39:29,421 INFO L226 Difference]: Without dead ends: 1414 [2021-03-10 20:39:29,421 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:29,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2021-03-10 20:39:29,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1357. [2021-03-10 20:39:29,432 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) [2021-03-10 20:39:29,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 3789 transitions. [2021-03-10 20:39:29,433 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 3789 transitions. Word has length 26 [2021-03-10 20:39:29,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:29,433 INFO L480 AbstractCegarLoop]: Abstraction has 1357 states and 3789 transitions. [2021-03-10 20:39:29,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:29,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 3789 transitions. [2021-03-10 20:39:29,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:29,435 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:29,435 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:29,435 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-03-10 20:39:29,435 INFO L428 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:29,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:29,435 INFO L82 PathProgramCache]: Analyzing trace with hash -2027439616, now seen corresponding path program 220 times [2021-03-10 20:39:29,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:29,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719237814] [2021-03-10 20:39:29,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:29,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:29,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719237814] [2021-03-10 20:39:29,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:29,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:29,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843637394] [2021-03-10 20:39:29,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:29,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:29,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:29,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:29,496 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) [2021-03-10 20:39:29,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:29,670 INFO L93 Difference]: Finished difference Result 1489 states and 4130 transitions. [2021-03-10 20:39:29,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:29,671 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:29,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:29,672 INFO L225 Difference]: With dead ends: 1489 [2021-03-10 20:39:29,672 INFO L226 Difference]: Without dead ends: 1401 [2021-03-10 20:39:29,672 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:29,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2021-03-10 20:39:29,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1361. [2021-03-10 20:39:29,683 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) [2021-03-10 20:39:29,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 3801 transitions. [2021-03-10 20:39:29,685 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 3801 transitions. Word has length 26 [2021-03-10 20:39:29,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:29,685 INFO L480 AbstractCegarLoop]: Abstraction has 1361 states and 3801 transitions. [2021-03-10 20:39:29,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:29,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 3801 transitions. [2021-03-10 20:39:29,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:29,686 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:29,686 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:29,686 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-03-10 20:39:29,686 INFO L428 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:29,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:29,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1555459838, now seen corresponding path program 221 times [2021-03-10 20:39:29,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:29,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956821192] [2021-03-10 20:39:29,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:29,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:29,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956821192] [2021-03-10 20:39:29,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:29,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:29,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126721735] [2021-03-10 20:39:29,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:29,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:29,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:29,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:29,767 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) [2021-03-10 20:39:29,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:29,960 INFO L93 Difference]: Finished difference Result 1502 states and 4148 transitions. [2021-03-10 20:39:29,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:29,960 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:29,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:29,962 INFO L225 Difference]: With dead ends: 1502 [2021-03-10 20:39:29,962 INFO L226 Difference]: Without dead ends: 1414 [2021-03-10 20:39:29,962 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:29,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2021-03-10 20:39:29,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1360. [2021-03-10 20:39:29,984 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) [2021-03-10 20:39:29,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 3801 transitions. [2021-03-10 20:39:29,986 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 3801 transitions. Word has length 26 [2021-03-10 20:39:29,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:29,986 INFO L480 AbstractCegarLoop]: Abstraction has 1360 states and 3801 transitions. [2021-03-10 20:39:29,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:29,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 3801 transitions. [2021-03-10 20:39:29,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:29,987 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:29,987 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:29,987 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-03-10 20:39:29,987 INFO L428 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:29,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:29,988 INFO L82 PathProgramCache]: Analyzing trace with hash -528175042, now seen corresponding path program 222 times [2021-03-10 20:39:29,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:29,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866159701] [2021-03-10 20:39:29,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:30,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:30,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866159701] [2021-03-10 20:39:30,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:30,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:30,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366961586] [2021-03-10 20:39:30,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:30,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:30,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:30,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:30,057 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) [2021-03-10 20:39:30,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:30,249 INFO L93 Difference]: Finished difference Result 1528 states and 4222 transitions. [2021-03-10 20:39:30,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:30,249 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:30,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:30,251 INFO L225 Difference]: With dead ends: 1528 [2021-03-10 20:39:30,251 INFO L226 Difference]: Without dead ends: 1443 [2021-03-10 20:39:30,251 INFO L775 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 [2021-03-10 20:39:30,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2021-03-10 20:39:30,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1358. [2021-03-10 20:39:30,263 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) [2021-03-10 20:39:30,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 3793 transitions. [2021-03-10 20:39:30,264 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 3793 transitions. Word has length 26 [2021-03-10 20:39:30,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:30,264 INFO L480 AbstractCegarLoop]: Abstraction has 1358 states and 3793 transitions. [2021-03-10 20:39:30,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:30,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 3793 transitions. [2021-03-10 20:39:30,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:30,266 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:30,266 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:30,266 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-03-10 20:39:30,266 INFO L428 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:30,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:30,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1101572318, now seen corresponding path program 223 times [2021-03-10 20:39:30,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:30,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135048415] [2021-03-10 20:39:30,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:30,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:30,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135048415] [2021-03-10 20:39:30,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:30,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:30,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246779580] [2021-03-10 20:39:30,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:30,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:30,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:30,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:30,360 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) [2021-03-10 20:39:30,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:30,551 INFO L93 Difference]: Finished difference Result 1519 states and 4205 transitions. [2021-03-10 20:39:30,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:30,552 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:30,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:30,553 INFO L225 Difference]: With dead ends: 1519 [2021-03-10 20:39:30,553 INFO L226 Difference]: Without dead ends: 1436 [2021-03-10 20:39:30,553 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 72.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:30,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2021-03-10 20:39:30,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1359. [2021-03-10 20:39:30,565 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) [2021-03-10 20:39:30,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 3792 transitions. [2021-03-10 20:39:30,567 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 3792 transitions. Word has length 26 [2021-03-10 20:39:30,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:30,567 INFO L480 AbstractCegarLoop]: Abstraction has 1359 states and 3792 transitions. [2021-03-10 20:39:30,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:30,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 3792 transitions. [2021-03-10 20:39:30,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:30,568 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:30,568 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:30,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-03-10 20:39:30,568 INFO L428 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:30,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:30,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1944327842, now seen corresponding path program 224 times [2021-03-10 20:39:30,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:30,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839894272] [2021-03-10 20:39:30,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:30,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:30,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839894272] [2021-03-10 20:39:30,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:30,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:30,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909210672] [2021-03-10 20:39:30,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:30,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:30,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:30,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:30,643 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) [2021-03-10 20:39:30,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:30,828 INFO L93 Difference]: Finished difference Result 1503 states and 4164 transitions. [2021-03-10 20:39:30,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:30,828 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 [2021-03-10 20:39:30,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:30,830 INFO L225 Difference]: With dead ends: 1503 [2021-03-10 20:39:30,830 INFO L226 Difference]: Without dead ends: 1416 [2021-03-10 20:39:30,830 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:30,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-03-10 20:39:30,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1358. [2021-03-10 20:39:30,842 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) [2021-03-10 20:39:30,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 3792 transitions. [2021-03-10 20:39:30,843 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 3792 transitions. Word has length 26 [2021-03-10 20:39:30,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:30,843 INFO L480 AbstractCegarLoop]: Abstraction has 1358 states and 3792 transitions. [2021-03-10 20:39:30,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:30,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 3792 transitions. [2021-03-10 20:39:30,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:30,845 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:30,845 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:30,845 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-03-10 20:39:30,845 INFO L428 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:30,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:30,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1204204642, now seen corresponding path program 225 times [2021-03-10 20:39:30,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:30,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868180950] [2021-03-10 20:39:30,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:30,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:30,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868180950] [2021-03-10 20:39:30,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:30,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:30,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503845658] [2021-03-10 20:39:30,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:30,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:30,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:30,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:30,912 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) [2021-03-10 20:39:31,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:31,098 INFO L93 Difference]: Finished difference Result 1491 states and 4141 transitions. [2021-03-10 20:39:31,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:31,098 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:31,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:31,100 INFO L225 Difference]: With dead ends: 1491 [2021-03-10 20:39:31,100 INFO L226 Difference]: Without dead ends: 1403 [2021-03-10 20:39:31,100 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:31,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2021-03-10 20:39:31,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1360. [2021-03-10 20:39:31,125 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) [2021-03-10 20:39:31,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 3799 transitions. [2021-03-10 20:39:31,127 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 3799 transitions. Word has length 26 [2021-03-10 20:39:31,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:31,127 INFO L480 AbstractCegarLoop]: Abstraction has 1360 states and 3799 transitions. [2021-03-10 20:39:31,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:31,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 3799 transitions. [2021-03-10 20:39:31,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:31,128 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:31,128 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:31,129 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-03-10 20:39:31,129 INFO L428 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:31,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:31,129 INFO L82 PathProgramCache]: Analyzing trace with hash 492136800, now seen corresponding path program 226 times [2021-03-10 20:39:31,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:31,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821577663] [2021-03-10 20:39:31,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:31,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:31,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821577663] [2021-03-10 20:39:31,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:31,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:31,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629844064] [2021-03-10 20:39:31,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:31,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:31,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:31,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:31,200 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) [2021-03-10 20:39:31,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:31,410 INFO L93 Difference]: Finished difference Result 1499 states and 4143 transitions. [2021-03-10 20:39:31,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:31,410 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:31,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:31,412 INFO L225 Difference]: With dead ends: 1499 [2021-03-10 20:39:31,412 INFO L226 Difference]: Without dead ends: 1413 [2021-03-10 20:39:31,412 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:31,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2021-03-10 20:39:31,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1359. [2021-03-10 20:39:31,424 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) [2021-03-10 20:39:31,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 3792 transitions. [2021-03-10 20:39:31,426 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 3792 transitions. Word has length 26 [2021-03-10 20:39:31,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:31,426 INFO L480 AbstractCegarLoop]: Abstraction has 1359 states and 3792 transitions. [2021-03-10 20:39:31,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:31,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 3792 transitions. [2021-03-10 20:39:31,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:31,427 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:31,427 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:31,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-03-10 20:39:31,427 INFO L428 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:31,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:31,427 INFO L82 PathProgramCache]: Analyzing trace with hash -187939904, now seen corresponding path program 227 times [2021-03-10 20:39:31,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:31,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819077126] [2021-03-10 20:39:31,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:31,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:31,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819077126] [2021-03-10 20:39:31,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:31,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:31,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019431984] [2021-03-10 20:39:31,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:31,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:31,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:31,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:31,526 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) [2021-03-10 20:39:31,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:31,723 INFO L93 Difference]: Finished difference Result 1555 states and 4298 transitions. [2021-03-10 20:39:31,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:31,723 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:31,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:31,725 INFO L225 Difference]: With dead ends: 1555 [2021-03-10 20:39:31,725 INFO L226 Difference]: Without dead ends: 1458 [2021-03-10 20:39:31,725 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:31,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2021-03-10 20:39:31,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1352. [2021-03-10 20:39:31,736 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) [2021-03-10 20:39:31,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 3769 transitions. [2021-03-10 20:39:31,738 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 3769 transitions. Word has length 26 [2021-03-10 20:39:31,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:31,738 INFO L480 AbstractCegarLoop]: Abstraction has 1352 states and 3769 transitions. [2021-03-10 20:39:31,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:31,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 3769 transitions. [2021-03-10 20:39:31,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:31,739 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:31,739 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:31,739 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-03-10 20:39:31,739 INFO L428 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:31,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:31,739 INFO L82 PathProgramCache]: Analyzing trace with hash 402377150, now seen corresponding path program 228 times [2021-03-10 20:39:31,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:31,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385113876] [2021-03-10 20:39:31,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:31,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:31,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385113876] [2021-03-10 20:39:31,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:31,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:31,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447391965] [2021-03-10 20:39:31,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:31,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:31,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:31,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:31,803 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) [2021-03-10 20:39:31,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:31,984 INFO L93 Difference]: Finished difference Result 1504 states and 4155 transitions. [2021-03-10 20:39:31,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:31,984 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:31,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:31,986 INFO L225 Difference]: With dead ends: 1504 [2021-03-10 20:39:31,986 INFO L226 Difference]: Without dead ends: 1415 [2021-03-10 20:39:31,986 INFO L775 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 [2021-03-10 20:39:31,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2021-03-10 20:39:31,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1347. [2021-03-10 20:39:31,997 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) [2021-03-10 20:39:31,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 3758 transitions. [2021-03-10 20:39:31,999 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 3758 transitions. Word has length 26 [2021-03-10 20:39:31,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:31,999 INFO L480 AbstractCegarLoop]: Abstraction has 1347 states and 3758 transitions. [2021-03-10 20:39:31,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:31,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 3758 transitions. [2021-03-10 20:39:32,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:32,000 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:32,000 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:32,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-03-10 20:39:32,000 INFO L428 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:32,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:32,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1005160398, now seen corresponding path program 229 times [2021-03-10 20:39:32,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:32,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430189978] [2021-03-10 20:39:32,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:32,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:32,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430189978] [2021-03-10 20:39:32,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:32,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:32,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455328905] [2021-03-10 20:39:32,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:32,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:32,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:32,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:32,052 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) [2021-03-10 20:39:32,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:32,196 INFO L93 Difference]: Finished difference Result 1541 states and 4265 transitions. [2021-03-10 20:39:32,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:32,196 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 [2021-03-10 20:39:32,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:32,198 INFO L225 Difference]: With dead ends: 1541 [2021-03-10 20:39:32,198 INFO L226 Difference]: Without dead ends: 1453 [2021-03-10 20:39:32,198 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:32,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-03-10 20:39:32,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1373. [2021-03-10 20:39:32,209 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) [2021-03-10 20:39:32,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 3834 transitions. [2021-03-10 20:39:32,218 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 3834 transitions. Word has length 26 [2021-03-10 20:39:32,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:32,218 INFO L480 AbstractCegarLoop]: Abstraction has 1373 states and 3834 transitions. [2021-03-10 20:39:32,218 INFO L481 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) [2021-03-10 20:39:32,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 3834 transitions. [2021-03-10 20:39:32,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:32,220 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:32,220 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:32,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-03-10 20:39:32,220 INFO L428 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:32,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:32,220 INFO L82 PathProgramCache]: Analyzing trace with hash 293092556, now seen corresponding path program 230 times [2021-03-10 20:39:32,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:32,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948225291] [2021-03-10 20:39:32,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:32,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:32,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948225291] [2021-03-10 20:39:32,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:32,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:32,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524509146] [2021-03-10 20:39:32,286 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:32,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:32,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:32,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:32,287 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) [2021-03-10 20:39:32,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:32,468 INFO L93 Difference]: Finished difference Result 1604 states and 4405 transitions. [2021-03-10 20:39:32,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:32,468 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:32,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:32,469 INFO L225 Difference]: With dead ends: 1604 [2021-03-10 20:39:32,469 INFO L226 Difference]: Without dead ends: 1393 [2021-03-10 20:39:32,469 INFO L775 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 [2021-03-10 20:39:32,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2021-03-10 20:39:32,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1293. [2021-03-10 20:39:32,480 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) [2021-03-10 20:39:32,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 3593 transitions. [2021-03-10 20:39:32,482 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 3593 transitions. Word has length 26 [2021-03-10 20:39:32,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:32,482 INFO L480 AbstractCegarLoop]: Abstraction has 1293 states and 3593 transitions. [2021-03-10 20:39:32,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:32,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 3593 transitions. [2021-03-10 20:39:32,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:32,483 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:32,483 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:32,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-03-10 20:39:32,483 INFO L428 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:32,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:32,483 INFO L82 PathProgramCache]: Analyzing trace with hash -705195920, now seen corresponding path program 231 times [2021-03-10 20:39:32,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:32,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599284605] [2021-03-10 20:39:32,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:32,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:32,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599284605] [2021-03-10 20:39:32,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:32,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:32,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331947531] [2021-03-10 20:39:32,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:32,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:32,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:32,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:32,558 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) [2021-03-10 20:39:32,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:32,732 INFO L93 Difference]: Finished difference Result 1480 states and 4066 transitions. [2021-03-10 20:39:32,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:32,732 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:32,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:32,734 INFO L225 Difference]: With dead ends: 1480 [2021-03-10 20:39:32,734 INFO L226 Difference]: Without dead ends: 1392 [2021-03-10 20:39:32,734 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:32,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2021-03-10 20:39:32,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1290. [2021-03-10 20:39:32,745 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) [2021-03-10 20:39:32,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 3585 transitions. [2021-03-10 20:39:32,746 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 3585 transitions. Word has length 26 [2021-03-10 20:39:32,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:32,746 INFO L480 AbstractCegarLoop]: Abstraction has 1290 states and 3585 transitions. [2021-03-10 20:39:32,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:32,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 3585 transitions. [2021-03-10 20:39:32,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:32,747 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:32,747 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:32,747 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-03-10 20:39:32,748 INFO L428 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:32,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:32,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1417263762, now seen corresponding path program 232 times [2021-03-10 20:39:32,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:32,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149092446] [2021-03-10 20:39:32,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:32,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:32,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149092446] [2021-03-10 20:39:32,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:32,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:32,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364830306] [2021-03-10 20:39:32,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:32,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:32,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:32,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:32,812 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) [2021-03-10 20:39:32,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:32,985 INFO L93 Difference]: Finished difference Result 1427 states and 3933 transitions. [2021-03-10 20:39:32,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:32,986 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 [2021-03-10 20:39:32,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:32,987 INFO L225 Difference]: With dead ends: 1427 [2021-03-10 20:39:32,987 INFO L226 Difference]: Without dead ends: 1341 [2021-03-10 20:39:32,987 INFO L775 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 [2021-03-10 20:39:32,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2021-03-10 20:39:32,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1293. [2021-03-10 20:39:32,998 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) [2021-03-10 20:39:32,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 3590 transitions. [2021-03-10 20:39:32,999 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 3590 transitions. Word has length 26 [2021-03-10 20:39:32,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:32,999 INFO L480 AbstractCegarLoop]: Abstraction has 1293 states and 3590 transitions. [2021-03-10 20:39:32,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:32,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 3590 transitions. [2021-03-10 20:39:33,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:33,000 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:33,000 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:33,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-03-10 20:39:33,000 INFO L428 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:33,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:33,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1507023412, now seen corresponding path program 233 times [2021-03-10 20:39:33,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:33,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824360752] [2021-03-10 20:39:33,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:33,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:33,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824360752] [2021-03-10 20:39:33,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:33,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:33,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120286536] [2021-03-10 20:39:33,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:33,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:33,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:33,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:33,064 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) [2021-03-10 20:39:33,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:33,237 INFO L93 Difference]: Finished difference Result 1430 states and 3930 transitions. [2021-03-10 20:39:33,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:33,237 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 [2021-03-10 20:39:33,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:33,238 INFO L225 Difference]: With dead ends: 1430 [2021-03-10 20:39:33,238 INFO L226 Difference]: Without dead ends: 1298 [2021-03-10 20:39:33,239 INFO L775 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 [2021-03-10 20:39:33,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2021-03-10 20:39:33,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1201. [2021-03-10 20:39:33,248 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) [2021-03-10 20:39:33,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 3351 transitions. [2021-03-10 20:39:33,250 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 3351 transitions. Word has length 26 [2021-03-10 20:39:33,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:33,250 INFO L480 AbstractCegarLoop]: Abstraction has 1201 states and 3351 transitions. [2021-03-10 20:39:33,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:33,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 3351 transitions. [2021-03-10 20:39:33,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:33,251 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:33,251 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:33,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-03-10 20:39:33,251 INFO L428 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:33,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:33,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1300378374, now seen corresponding path program 234 times [2021-03-10 20:39:33,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:33,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073722909] [2021-03-10 20:39:33,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:33,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:33,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073722909] [2021-03-10 20:39:33,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:33,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:33,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13611010] [2021-03-10 20:39:33,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:33,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:33,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:33,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:33,312 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) [2021-03-10 20:39:33,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:33,444 INFO L93 Difference]: Finished difference Result 1516 states and 4163 transitions. [2021-03-10 20:39:33,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:33,444 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 [2021-03-10 20:39:33,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:33,445 INFO L225 Difference]: With dead ends: 1516 [2021-03-10 20:39:33,445 INFO L226 Difference]: Without dead ends: 1341 [2021-03-10 20:39:33,445 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:33,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2021-03-10 20:39:33,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1275. [2021-03-10 20:39:33,456 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) [2021-03-10 20:39:33,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 3530 transitions. [2021-03-10 20:39:33,457 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 3530 transitions. Word has length 26 [2021-03-10 20:39:33,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:33,457 INFO L480 AbstractCegarLoop]: Abstraction has 1275 states and 3530 transitions. [2021-03-10 20:39:33,457 INFO L481 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) [2021-03-10 20:39:33,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 3530 transitions. [2021-03-10 20:39:33,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:33,458 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:33,459 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:33,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-03-10 20:39:33,459 INFO L428 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:33,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:33,459 INFO L82 PathProgramCache]: Analyzing trace with hash 2135003928, now seen corresponding path program 235 times [2021-03-10 20:39:33,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:33,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869292155] [2021-03-10 20:39:33,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:33,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:33,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869292155] [2021-03-10 20:39:33,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:33,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:33,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869390879] [2021-03-10 20:39:33,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:33,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:33,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:33,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:33,518 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) [2021-03-10 20:39:33,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:33,685 INFO L93 Difference]: Finished difference Result 1474 states and 4020 transitions. [2021-03-10 20:39:33,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:33,686 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 [2021-03-10 20:39:33,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:33,687 INFO L225 Difference]: With dead ends: 1474 [2021-03-10 20:39:33,687 INFO L226 Difference]: Without dead ends: 1337 [2021-03-10 20:39:33,687 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:33,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2021-03-10 20:39:33,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1249. [2021-03-10 20:39:33,697 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) [2021-03-10 20:39:33,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 3456 transitions. [2021-03-10 20:39:33,698 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 3456 transitions. Word has length 26 [2021-03-10 20:39:33,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:33,698 INFO L480 AbstractCegarLoop]: Abstraction has 1249 states and 3456 transitions. [2021-03-10 20:39:33,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:33,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 3456 transitions. [2021-03-10 20:39:33,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:33,699 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:33,699 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:33,699 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-03-10 20:39:33,699 INFO L428 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:33,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:33,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1232534076, now seen corresponding path program 236 times [2021-03-10 20:39:33,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:33,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536576642] [2021-03-10 20:39:33,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:33,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:33,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536576642] [2021-03-10 20:39:33,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:33,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:33,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079754315] [2021-03-10 20:39:33,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:33,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:33,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:33,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:33,753 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) [2021-03-10 20:39:33,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:33,888 INFO L93 Difference]: Finished difference Result 1527 states and 4192 transitions. [2021-03-10 20:39:33,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:33,888 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 [2021-03-10 20:39:33,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:33,889 INFO L225 Difference]: With dead ends: 1527 [2021-03-10 20:39:33,889 INFO L226 Difference]: Without dead ends: 1416 [2021-03-10 20:39:33,889 INFO L775 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 [2021-03-10 20:39:33,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-03-10 20:39:33,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1255. [2021-03-10 20:39:33,900 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) [2021-03-10 20:39:33,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 3466 transitions. [2021-03-10 20:39:33,901 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 3466 transitions. Word has length 26 [2021-03-10 20:39:33,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:33,901 INFO L480 AbstractCegarLoop]: Abstraction has 1255 states and 3466 transitions. [2021-03-10 20:39:33,901 INFO L481 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) [2021-03-10 20:39:33,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 3466 transitions. [2021-03-10 20:39:33,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:33,902 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:33,902 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:33,902 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-03-10 20:39:33,903 INFO L428 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:33,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:33,903 INFO L82 PathProgramCache]: Analyzing trace with hash 324282940, now seen corresponding path program 237 times [2021-03-10 20:39:33,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:33,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924863231] [2021-03-10 20:39:33,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:33,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:33,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924863231] [2021-03-10 20:39:33,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:33,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:33,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679694376] [2021-03-10 20:39:33,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:33,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:33,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:33,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:33,963 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) [2021-03-10 20:39:34,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:34,135 INFO L93 Difference]: Finished difference Result 1417 states and 3868 transitions. [2021-03-10 20:39:34,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:34,135 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:34,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:34,136 INFO L225 Difference]: With dead ends: 1417 [2021-03-10 20:39:34,136 INFO L226 Difference]: Without dead ends: 1324 [2021-03-10 20:39:34,136 INFO L775 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 [2021-03-10 20:39:34,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2021-03-10 20:39:34,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1258. [2021-03-10 20:39:34,147 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) [2021-03-10 20:39:34,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 3477 transitions. [2021-03-10 20:39:34,148 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 3477 transitions. Word has length 26 [2021-03-10 20:39:34,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:34,148 INFO L480 AbstractCegarLoop]: Abstraction has 1258 states and 3477 transitions. [2021-03-10 20:39:34,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:34,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 3477 transitions. [2021-03-10 20:39:34,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:34,149 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:34,149 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:34,149 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-03-10 20:39:34,149 INFO L428 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:34,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:34,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1193727548, now seen corresponding path program 238 times [2021-03-10 20:39:34,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:34,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652833697] [2021-03-10 20:39:34,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:34,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:34,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652833697] [2021-03-10 20:39:34,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:34,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:34,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429444769] [2021-03-10 20:39:34,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:34,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:34,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:34,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:34,209 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) [2021-03-10 20:39:34,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:34,382 INFO L93 Difference]: Finished difference Result 1452 states and 3941 transitions. [2021-03-10 20:39:34,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:34,382 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 [2021-03-10 20:39:34,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:34,383 INFO L225 Difference]: With dead ends: 1452 [2021-03-10 20:39:34,383 INFO L226 Difference]: Without dead ends: 1334 [2021-03-10 20:39:34,383 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:34,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2021-03-10 20:39:34,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1252. [2021-03-10 20:39:34,393 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) [2021-03-10 20:39:34,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3449 transitions. [2021-03-10 20:39:34,395 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3449 transitions. Word has length 26 [2021-03-10 20:39:34,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:34,395 INFO L480 AbstractCegarLoop]: Abstraction has 1252 states and 3449 transitions. [2021-03-10 20:39:34,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:34,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3449 transitions. [2021-03-10 20:39:34,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:34,396 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:34,396 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:34,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-03-10 20:39:34,396 INFO L428 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:34,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:34,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1244858906, now seen corresponding path program 239 times [2021-03-10 20:39:34,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:34,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086874518] [2021-03-10 20:39:34,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:34,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:34,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086874518] [2021-03-10 20:39:34,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:34,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:34,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858082525] [2021-03-10 20:39:34,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:34,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:34,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:34,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:34,471 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) [2021-03-10 20:39:34,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:34,640 INFO L93 Difference]: Finished difference Result 1528 states and 4182 transitions. [2021-03-10 20:39:34,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:34,641 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 [2021-03-10 20:39:34,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:34,642 INFO L225 Difference]: With dead ends: 1528 [2021-03-10 20:39:34,642 INFO L226 Difference]: Without dead ends: 1420 [2021-03-10 20:39:34,642 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:34,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-03-10 20:39:34,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1249. [2021-03-10 20:39:34,653 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) [2021-03-10 20:39:34,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 3441 transitions. [2021-03-10 20:39:34,654 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 3441 transitions. Word has length 26 [2021-03-10 20:39:34,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:34,654 INFO L480 AbstractCegarLoop]: Abstraction has 1249 states and 3441 transitions. [2021-03-10 20:39:34,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:34,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 3441 transitions. [2021-03-10 20:39:34,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:34,655 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:34,655 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:34,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-03-10 20:39:34,655 INFO L428 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:34,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:34,656 INFO L82 PathProgramCache]: Analyzing trace with hash 396768502, now seen corresponding path program 240 times [2021-03-10 20:39:34,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:34,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249720313] [2021-03-10 20:39:34,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:34,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:34,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249720313] [2021-03-10 20:39:34,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:34,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:34,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088253852] [2021-03-10 20:39:34,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:34,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:34,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:34,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:34,709 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) [2021-03-10 20:39:34,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:34,844 INFO L93 Difference]: Finished difference Result 1511 states and 4128 transitions. [2021-03-10 20:39:34,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:34,845 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 [2021-03-10 20:39:34,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:34,846 INFO L225 Difference]: With dead ends: 1511 [2021-03-10 20:39:34,846 INFO L226 Difference]: Without dead ends: 1418 [2021-03-10 20:39:34,846 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:34,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2021-03-10 20:39:34,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1275. [2021-03-10 20:39:34,857 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) [2021-03-10 20:39:34,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 3517 transitions. [2021-03-10 20:39:34,858 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 3517 transitions. Word has length 26 [2021-03-10 20:39:34,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:34,858 INFO L480 AbstractCegarLoop]: Abstraction has 1275 states and 3517 transitions. [2021-03-10 20:39:34,858 INFO L481 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) [2021-03-10 20:39:34,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 3517 transitions. [2021-03-10 20:39:34,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:34,859 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:34,859 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:34,860 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-03-10 20:39:34,860 INFO L428 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:34,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:34,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1266213110, now seen corresponding path program 241 times [2021-03-10 20:39:34,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:34,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892500663] [2021-03-10 20:39:34,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:34,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:34,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892500663] [2021-03-10 20:39:34,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:34,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:34,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468607747] [2021-03-10 20:39:34,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:34,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:34,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:34,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:34,919 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) [2021-03-10 20:39:35,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:35,086 INFO L93 Difference]: Finished difference Result 1582 states and 4293 transitions. [2021-03-10 20:39:35,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:35,086 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 [2021-03-10 20:39:35,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:35,088 INFO L225 Difference]: With dead ends: 1582 [2021-03-10 20:39:35,088 INFO L226 Difference]: Without dead ends: 1369 [2021-03-10 20:39:35,088 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:35,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2021-03-10 20:39:35,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1275. [2021-03-10 20:39:35,098 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) [2021-03-10 20:39:35,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 3491 transitions. [2021-03-10 20:39:35,099 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 3491 transitions. Word has length 26 [2021-03-10 20:39:35,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:35,100 INFO L480 AbstractCegarLoop]: Abstraction has 1275 states and 3491 transitions. [2021-03-10 20:39:35,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:35,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 3491 transitions. [2021-03-10 20:39:35,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:35,101 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:35,101 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:35,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-03-10 20:39:35,101 INFO L428 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:35,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:35,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1140650728, now seen corresponding path program 242 times [2021-03-10 20:39:35,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:35,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146817716] [2021-03-10 20:39:35,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:35,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:35,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146817716] [2021-03-10 20:39:35,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:35,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:35,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717938115] [2021-03-10 20:39:35,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:35,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:35,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:35,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:35,168 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) [2021-03-10 20:39:35,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:35,342 INFO L93 Difference]: Finished difference Result 1460 states and 3935 transitions. [2021-03-10 20:39:35,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:35,343 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:35,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:35,347 INFO L225 Difference]: With dead ends: 1460 [2021-03-10 20:39:35,348 INFO L226 Difference]: Without dead ends: 1367 [2021-03-10 20:39:35,348 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:35,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2021-03-10 20:39:35,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1275. [2021-03-10 20:39:35,358 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) [2021-03-10 20:39:35,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 3487 transitions. [2021-03-10 20:39:35,359 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 3487 transitions. Word has length 26 [2021-03-10 20:39:35,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:35,359 INFO L480 AbstractCegarLoop]: Abstraction has 1275 states and 3487 transitions. [2021-03-10 20:39:35,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:35,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 3487 transitions. [2021-03-10 20:39:35,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:35,360 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:35,361 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:35,361 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-03-10 20:39:35,361 INFO L428 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:35,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:35,361 INFO L82 PathProgramCache]: Analyzing trace with hash -271206120, now seen corresponding path program 243 times [2021-03-10 20:39:35,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:35,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389786219] [2021-03-10 20:39:35,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:35,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:35,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389786219] [2021-03-10 20:39:35,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:35,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:35,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491376582] [2021-03-10 20:39:35,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:35,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:35,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:35,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:35,426 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) [2021-03-10 20:39:35,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:35,600 INFO L93 Difference]: Finished difference Result 1471 states and 3964 transitions. [2021-03-10 20:39:35,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:35,601 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:35,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:35,602 INFO L225 Difference]: With dead ends: 1471 [2021-03-10 20:39:35,602 INFO L226 Difference]: Without dead ends: 1362 [2021-03-10 20:39:35,602 INFO L775 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 [2021-03-10 20:39:35,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2021-03-10 20:39:35,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1290. [2021-03-10 20:39:35,612 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) [2021-03-10 20:39:35,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 3523 transitions. [2021-03-10 20:39:35,614 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 3523 transitions. Word has length 26 [2021-03-10 20:39:35,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:35,614 INFO L480 AbstractCegarLoop]: Abstraction has 1290 states and 3523 transitions. [2021-03-10 20:39:35,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:35,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 3523 transitions. [2021-03-10 20:39:35,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:35,615 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:35,615 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:35,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-03-10 20:39:35,615 INFO L428 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:35,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:35,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1899862930, now seen corresponding path program 244 times [2021-03-10 20:39:35,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:35,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181351417] [2021-03-10 20:39:35,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:35,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:35,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181351417] [2021-03-10 20:39:35,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:35,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:35,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249460923] [2021-03-10 20:39:35,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:35,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:35,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:35,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:35,677 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) [2021-03-10 20:39:35,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:35,848 INFO L93 Difference]: Finished difference Result 1456 states and 3922 transitions. [2021-03-10 20:39:35,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:35,848 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 [2021-03-10 20:39:35,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:35,849 INFO L225 Difference]: With dead ends: 1456 [2021-03-10 20:39:35,849 INFO L226 Difference]: Without dead ends: 1294 [2021-03-10 20:39:35,849 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:35,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-03-10 20:39:35,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1245. [2021-03-10 20:39:35,859 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) [2021-03-10 20:39:35,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 3411 transitions. [2021-03-10 20:39:35,861 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 3411 transitions. Word has length 26 [2021-03-10 20:39:35,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:35,861 INFO L480 AbstractCegarLoop]: Abstraction has 1245 states and 3411 transitions. [2021-03-10 20:39:35,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:35,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 3411 transitions. [2021-03-10 20:39:35,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:35,862 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:35,862 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:35,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-03-10 20:39:35,862 INFO L428 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:35,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:35,862 INFO L82 PathProgramCache]: Analyzing trace with hash 760808728, now seen corresponding path program 245 times [2021-03-10 20:39:35,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:35,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874242839] [2021-03-10 20:39:35,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:35,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:35,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874242839] [2021-03-10 20:39:35,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:35,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:35,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106342241] [2021-03-10 20:39:35,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:35,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:35,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:35,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:35,912 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) [2021-03-10 20:39:36,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:36,046 INFO L93 Difference]: Finished difference Result 1475 states and 3997 transitions. [2021-03-10 20:39:36,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:36,047 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 [2021-03-10 20:39:36,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:36,048 INFO L225 Difference]: With dead ends: 1475 [2021-03-10 20:39:36,048 INFO L226 Difference]: Without dead ends: 1320 [2021-03-10 20:39:36,048 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:36,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2021-03-10 20:39:36,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1284. [2021-03-10 20:39:36,058 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) [2021-03-10 20:39:36,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 3492 transitions. [2021-03-10 20:39:36,059 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 3492 transitions. Word has length 26 [2021-03-10 20:39:36,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:36,059 INFO L480 AbstractCegarLoop]: Abstraction has 1284 states and 3492 transitions. [2021-03-10 20:39:36,059 INFO L481 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) [2021-03-10 20:39:36,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 3492 transitions. [2021-03-10 20:39:36,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:36,061 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:36,061 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:36,061 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-03-10 20:39:36,061 INFO L428 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:36,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:36,061 INFO L82 PathProgramCache]: Analyzing trace with hash -98776266, now seen corresponding path program 246 times [2021-03-10 20:39:36,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:36,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910196483] [2021-03-10 20:39:36,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:36,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:36,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910196483] [2021-03-10 20:39:36,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:36,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:36,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362476639] [2021-03-10 20:39:36,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:36,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:36,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:36,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:36,121 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) [2021-03-10 20:39:36,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:36,291 INFO L93 Difference]: Finished difference Result 1451 states and 3899 transitions. [2021-03-10 20:39:36,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:36,292 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:36,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:36,293 INFO L225 Difference]: With dead ends: 1451 [2021-03-10 20:39:36,293 INFO L226 Difference]: Without dead ends: 1310 [2021-03-10 20:39:36,293 INFO L775 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 [2021-03-10 20:39:36,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2021-03-10 20:39:36,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1258. [2021-03-10 20:39:36,303 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) [2021-03-10 20:39:36,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 3420 transitions. [2021-03-10 20:39:36,305 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 3420 transitions. Word has length 26 [2021-03-10 20:39:36,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:36,305 INFO L480 AbstractCegarLoop]: Abstraction has 1258 states and 3420 transitions. [2021-03-10 20:39:36,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:36,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 3420 transitions. [2021-03-10 20:39:36,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:36,306 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:36,306 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:36,306 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-03-10 20:39:36,306 INFO L428 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:36,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:36,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1221048170, now seen corresponding path program 247 times [2021-03-10 20:39:36,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:36,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80706736] [2021-03-10 20:39:36,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:36,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:36,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80706736] [2021-03-10 20:39:36,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:36,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:36,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237886925] [2021-03-10 20:39:36,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:36,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:36,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:36,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:36,372 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) [2021-03-10 20:39:36,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:36,551 INFO L93 Difference]: Finished difference Result 1416 states and 3802 transitions. [2021-03-10 20:39:36,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:36,551 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:36,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:36,552 INFO L225 Difference]: With dead ends: 1416 [2021-03-10 20:39:36,552 INFO L226 Difference]: Without dead ends: 1335 [2021-03-10 20:39:36,553 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:36,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2021-03-10 20:39:36,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1260. [2021-03-10 20:39:36,563 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) [2021-03-10 20:39:36,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 3427 transitions. [2021-03-10 20:39:36,564 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 3427 transitions. Word has length 26 [2021-03-10 20:39:36,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:36,564 INFO L480 AbstractCegarLoop]: Abstraction has 1260 states and 3427 transitions. [2021-03-10 20:39:36,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:36,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 3427 transitions. [2021-03-10 20:39:36,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:36,565 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:36,565 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:36,565 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-03-10 20:39:36,565 INFO L428 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:36,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:36,566 INFO L82 PathProgramCache]: Analyzing trace with hash -351603562, now seen corresponding path program 248 times [2021-03-10 20:39:36,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:36,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871192196] [2021-03-10 20:39:36,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:36,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:36,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871192196] [2021-03-10 20:39:36,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:36,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:36,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530750133] [2021-03-10 20:39:36,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:36,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:36,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:36,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:36,627 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) [2021-03-10 20:39:36,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:36,803 INFO L93 Difference]: Finished difference Result 1422 states and 3809 transitions. [2021-03-10 20:39:36,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:36,803 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:36,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:36,804 INFO L225 Difference]: With dead ends: 1422 [2021-03-10 20:39:36,804 INFO L226 Difference]: Without dead ends: 1302 [2021-03-10 20:39:36,804 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:36,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2021-03-10 20:39:36,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1256. [2021-03-10 20:39:36,814 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) [2021-03-10 20:39:36,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 3414 transitions. [2021-03-10 20:39:36,816 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 3414 transitions. Word has length 26 [2021-03-10 20:39:36,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:36,816 INFO L480 AbstractCegarLoop]: Abstraction has 1256 states and 3414 transitions. [2021-03-10 20:39:36,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:36,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 3414 transitions. [2021-03-10 20:39:36,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:36,817 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:36,817 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:36,817 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-03-10 20:39:36,817 INFO L428 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:36,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:36,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1820314792, now seen corresponding path program 249 times [2021-03-10 20:39:36,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:36,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010552978] [2021-03-10 20:39:36,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:36,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:36,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010552978] [2021-03-10 20:39:36,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:36,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:36,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642080253] [2021-03-10 20:39:36,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:36,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:36,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:36,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:36,880 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) [2021-03-10 20:39:37,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:37,057 INFO L93 Difference]: Finished difference Result 1383 states and 3716 transitions. [2021-03-10 20:39:37,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:37,057 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:37,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:37,058 INFO L225 Difference]: With dead ends: 1383 [2021-03-10 20:39:37,058 INFO L226 Difference]: Without dead ends: 1292 [2021-03-10 20:39:37,058 INFO L775 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 [2021-03-10 20:39:37,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-03-10 20:39:37,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1244. [2021-03-10 20:39:37,068 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) [2021-03-10 20:39:37,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3391 transitions. [2021-03-10 20:39:37,070 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3391 transitions. Word has length 26 [2021-03-10 20:39:37,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:37,070 INFO L480 AbstractCegarLoop]: Abstraction has 1244 states and 3391 transitions. [2021-03-10 20:39:37,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:37,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3391 transitions. [2021-03-10 20:39:37,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:37,071 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:37,071 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:37,071 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-03-10 20:39:37,071 INFO L428 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:37,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:37,071 INFO L82 PathProgramCache]: Analyzing trace with hash -413150982, now seen corresponding path program 250 times [2021-03-10 20:39:37,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:37,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121639429] [2021-03-10 20:39:37,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:37,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:37,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121639429] [2021-03-10 20:39:37,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:37,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:37,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343758676] [2021-03-10 20:39:37,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:37,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:37,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:37,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:37,122 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) [2021-03-10 20:39:37,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:37,259 INFO L93 Difference]: Finished difference Result 1483 states and 4005 transitions. [2021-03-10 20:39:37,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:37,259 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 [2021-03-10 20:39:37,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:37,260 INFO L225 Difference]: With dead ends: 1483 [2021-03-10 20:39:37,260 INFO L226 Difference]: Without dead ends: 1331 [2021-03-10 20:39:37,260 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:37,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2021-03-10 20:39:37,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1273. [2021-03-10 20:39:37,270 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) [2021-03-10 20:39:37,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 3449 transitions. [2021-03-10 20:39:37,272 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 3449 transitions. Word has length 26 [2021-03-10 20:39:37,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:37,272 INFO L480 AbstractCegarLoop]: Abstraction has 1273 states and 3449 transitions. [2021-03-10 20:39:37,272 INFO L481 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) [2021-03-10 20:39:37,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 3449 transitions. [2021-03-10 20:39:37,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:37,273 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:37,273 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:37,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-03-10 20:39:37,273 INFO L428 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:37,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:37,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1272735976, now seen corresponding path program 251 times [2021-03-10 20:39:37,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:37,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021042110] [2021-03-10 20:39:37,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:37,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:37,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021042110] [2021-03-10 20:39:37,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:37,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:37,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448715385] [2021-03-10 20:39:37,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:37,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:37,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:37,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:37,334 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) [2021-03-10 20:39:37,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:37,512 INFO L93 Difference]: Finished difference Result 1455 states and 3899 transitions. [2021-03-10 20:39:37,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:37,513 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:37,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:37,514 INFO L225 Difference]: With dead ends: 1455 [2021-03-10 20:39:37,514 INFO L226 Difference]: Without dead ends: 1330 [2021-03-10 20:39:37,514 INFO L775 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 [2021-03-10 20:39:37,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-03-10 20:39:37,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1247. [2021-03-10 20:39:37,524 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) [2021-03-10 20:39:37,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 3387 transitions. [2021-03-10 20:39:37,526 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 3387 transitions. Word has length 26 [2021-03-10 20:39:37,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:37,526 INFO L480 AbstractCegarLoop]: Abstraction has 1247 states and 3387 transitions. [2021-03-10 20:39:37,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:37,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 3387 transitions. [2021-03-10 20:39:37,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:37,527 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:37,527 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:37,527 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-03-10 20:39:37,527 INFO L428 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:37,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:37,527 INFO L82 PathProgramCache]: Analyzing trace with hash -630959526, now seen corresponding path program 252 times [2021-03-10 20:39:37,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:37,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345381531] [2021-03-10 20:39:37,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:37,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:37,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345381531] [2021-03-10 20:39:37,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:37,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:37,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52467869] [2021-03-10 20:39:37,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:37,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:37,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:37,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:37,588 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) [2021-03-10 20:39:37,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:37,760 INFO L93 Difference]: Finished difference Result 1414 states and 3792 transitions. [2021-03-10 20:39:37,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:37,761 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:37,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:37,762 INFO L225 Difference]: With dead ends: 1414 [2021-03-10 20:39:37,762 INFO L226 Difference]: Without dead ends: 1315 [2021-03-10 20:39:37,762 INFO L775 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 [2021-03-10 20:39:37,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2021-03-10 20:39:37,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1253. [2021-03-10 20:39:37,772 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) [2021-03-10 20:39:37,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 3397 transitions. [2021-03-10 20:39:37,773 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 3397 transitions. Word has length 26 [2021-03-10 20:39:37,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:37,774 INFO L480 AbstractCegarLoop]: Abstraction has 1253 states and 3397 transitions. [2021-03-10 20:39:37,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:37,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 3397 transitions. [2021-03-10 20:39:37,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:37,775 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:37,775 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:37,775 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-03-10 20:39:37,775 INFO L428 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:37,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:37,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1539210662, now seen corresponding path program 253 times [2021-03-10 20:39:37,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:37,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930402322] [2021-03-10 20:39:37,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:37,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:37,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930402322] [2021-03-10 20:39:37,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:37,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:37,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528128179] [2021-03-10 20:39:37,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:37,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:37,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:37,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:37,837 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) [2021-03-10 20:39:38,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:38,010 INFO L93 Difference]: Finished difference Result 1410 states and 3784 transitions. [2021-03-10 20:39:38,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:38,011 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:38,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:38,012 INFO L225 Difference]: With dead ends: 1410 [2021-03-10 20:39:38,012 INFO L226 Difference]: Without dead ends: 1329 [2021-03-10 20:39:38,012 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:38,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-03-10 20:39:38,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1256. [2021-03-10 20:39:38,022 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) [2021-03-10 20:39:38,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 3408 transitions. [2021-03-10 20:39:38,024 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 3408 transitions. Word has length 26 [2021-03-10 20:39:38,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:38,024 INFO L480 AbstractCegarLoop]: Abstraction has 1256 states and 3408 transitions. [2021-03-10 20:39:38,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:38,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 3408 transitions. [2021-03-10 20:39:38,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:38,025 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:38,025 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:38,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-03-10 20:39:38,025 INFO L428 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:38,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:38,025 INFO L82 PathProgramCache]: Analyzing trace with hash -669766054, now seen corresponding path program 254 times [2021-03-10 20:39:38,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:38,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792114918] [2021-03-10 20:39:38,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:38,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:38,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792114918] [2021-03-10 20:39:38,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:38,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:38,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607298827] [2021-03-10 20:39:38,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:38,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:38,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:38,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:38,092 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) [2021-03-10 20:39:38,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:38,274 INFO L93 Difference]: Finished difference Result 1435 states and 3835 transitions. [2021-03-10 20:39:38,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:38,276 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:38,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:38,277 INFO L225 Difference]: With dead ends: 1435 [2021-03-10 20:39:38,277 INFO L226 Difference]: Without dead ends: 1329 [2021-03-10 20:39:38,277 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:38,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-03-10 20:39:38,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1253. [2021-03-10 20:39:38,287 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) [2021-03-10 20:39:38,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 3397 transitions. [2021-03-10 20:39:38,289 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 3397 transitions. Word has length 26 [2021-03-10 20:39:38,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:38,289 INFO L480 AbstractCegarLoop]: Abstraction has 1253 states and 3397 transitions. [2021-03-10 20:39:38,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:38,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 3397 transitions. [2021-03-10 20:39:38,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:38,290 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:38,290 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:38,290 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-03-10 20:39:38,290 INFO L428 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:38,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:38,290 INFO L82 PathProgramCache]: Analyzing trace with hash -618634696, now seen corresponding path program 255 times [2021-03-10 20:39:38,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:38,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512234097] [2021-03-10 20:39:38,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:38,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:38,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512234097] [2021-03-10 20:39:38,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:38,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:38,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329637524] [2021-03-10 20:39:38,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:38,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:38,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:38,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:38,354 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) [2021-03-10 20:39:38,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:38,529 INFO L93 Difference]: Finished difference Result 1387 states and 3720 transitions. [2021-03-10 20:39:38,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:38,530 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:38,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:38,531 INFO L225 Difference]: With dead ends: 1387 [2021-03-10 20:39:38,531 INFO L226 Difference]: Without dead ends: 1291 [2021-03-10 20:39:38,531 INFO L775 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 [2021-03-10 20:39:38,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2021-03-10 20:39:38,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1238. [2021-03-10 20:39:38,541 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) [2021-03-10 20:39:38,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 3364 transitions. [2021-03-10 20:39:38,543 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 3364 transitions. Word has length 26 [2021-03-10 20:39:38,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:38,543 INFO L480 AbstractCegarLoop]: Abstraction has 1238 states and 3364 transitions. [2021-03-10 20:39:38,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:38,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 3364 transitions. [2021-03-10 20:39:38,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:38,544 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:38,544 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:38,544 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-03-10 20:39:38,544 INFO L428 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:38,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:38,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1127571916, now seen corresponding path program 256 times [2021-03-10 20:39:38,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:38,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133035091] [2021-03-10 20:39:38,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:38,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:38,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133035091] [2021-03-10 20:39:38,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:38,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:38,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603543711] [2021-03-10 20:39:38,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:38,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:38,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:38,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:38,597 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) [2021-03-10 20:39:38,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:38,737 INFO L93 Difference]: Finished difference Result 1442 states and 3911 transitions. [2021-03-10 20:39:38,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:38,737 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 [2021-03-10 20:39:38,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:38,739 INFO L225 Difference]: With dead ends: 1442 [2021-03-10 20:39:38,739 INFO L226 Difference]: Without dead ends: 1357 [2021-03-10 20:39:38,739 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:38,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2021-03-10 20:39:38,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1252. [2021-03-10 20:39:38,749 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) [2021-03-10 20:39:38,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3402 transitions. [2021-03-10 20:39:38,750 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3402 transitions. Word has length 26 [2021-03-10 20:39:38,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:38,750 INFO L480 AbstractCegarLoop]: Abstraction has 1252 states and 3402 transitions. [2021-03-10 20:39:38,750 INFO L481 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) [2021-03-10 20:39:38,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3402 transitions. [2021-03-10 20:39:38,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:38,751 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:38,751 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:38,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-03-10 20:39:38,751 INFO L428 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:38,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:38,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1598466838, now seen corresponding path program 257 times [2021-03-10 20:39:38,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:38,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204868643] [2021-03-10 20:39:38,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:38,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:38,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204868643] [2021-03-10 20:39:38,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:38,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:38,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318750667] [2021-03-10 20:39:38,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:38,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:38,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:38,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:38,805 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) [2021-03-10 20:39:38,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:38,947 INFO L93 Difference]: Finished difference Result 1475 states and 4004 transitions. [2021-03-10 20:39:38,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:38,947 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 [2021-03-10 20:39:38,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:38,948 INFO L225 Difference]: With dead ends: 1475 [2021-03-10 20:39:38,949 INFO L226 Difference]: Without dead ends: 1382 [2021-03-10 20:39:38,949 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:38,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-03-10 20:39:38,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1238. [2021-03-10 20:39:38,959 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) [2021-03-10 20:39:38,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 3362 transitions. [2021-03-10 20:39:38,960 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 3362 transitions. Word has length 26 [2021-03-10 20:39:38,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:38,960 INFO L480 AbstractCegarLoop]: Abstraction has 1238 states and 3362 transitions. [2021-03-10 20:39:38,960 INFO L481 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) [2021-03-10 20:39:38,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 3362 transitions. [2021-03-10 20:39:38,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:38,961 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:38,961 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:38,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-03-10 20:39:38,962 INFO L428 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:38,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:38,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1852151958, now seen corresponding path program 258 times [2021-03-10 20:39:38,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:38,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101678159] [2021-03-10 20:39:38,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:39,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:39,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101678159] [2021-03-10 20:39:39,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:39,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:39,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364754378] [2021-03-10 20:39:39,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:39,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:39,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:39,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:39,024 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) [2021-03-10 20:39:39,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:39,203 INFO L93 Difference]: Finished difference Result 1375 states and 3707 transitions. [2021-03-10 20:39:39,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:39,203 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:39,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:39,204 INFO L225 Difference]: With dead ends: 1375 [2021-03-10 20:39:39,204 INFO L226 Difference]: Without dead ends: 1294 [2021-03-10 20:39:39,204 INFO L775 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 [2021-03-10 20:39:39,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-03-10 20:39:39,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1242. [2021-03-10 20:39:39,214 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) [2021-03-10 20:39:39,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 3377 transitions. [2021-03-10 20:39:39,216 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 3377 transitions. Word has length 26 [2021-03-10 20:39:39,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:39,216 INFO L480 AbstractCegarLoop]: Abstraction has 1242 states and 3377 transitions. [2021-03-10 20:39:39,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:39,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 3377 transitions. [2021-03-10 20:39:39,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:39,217 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:39,217 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:39,217 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-03-10 20:39:39,217 INFO L428 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:39,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:39,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1573370730, now seen corresponding path program 259 times [2021-03-10 20:39:39,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:39,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198400821] [2021-03-10 20:39:39,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:39,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:39,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198400821] [2021-03-10 20:39:39,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:39,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:39,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127280630] [2021-03-10 20:39:39,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:39,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:39,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:39,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:39,294 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) [2021-03-10 20:39:39,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:39,472 INFO L93 Difference]: Finished difference Result 1385 states and 3725 transitions. [2021-03-10 20:39:39,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:39,473 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 [2021-03-10 20:39:39,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:39,474 INFO L225 Difference]: With dead ends: 1385 [2021-03-10 20:39:39,474 INFO L226 Difference]: Without dead ends: 1288 [2021-03-10 20:39:39,474 INFO L775 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 [2021-03-10 20:39:39,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2021-03-10 20:39:39,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1243. [2021-03-10 20:39:39,484 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) [2021-03-10 20:39:39,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 3379 transitions. [2021-03-10 20:39:39,486 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 3379 transitions. Word has length 26 [2021-03-10 20:39:39,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:39,486 INFO L480 AbstractCegarLoop]: Abstraction has 1243 states and 3379 transitions. [2021-03-10 20:39:39,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:39,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 3379 transitions. [2021-03-10 20:39:39,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:39,487 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:39,487 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:39,487 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-03-10 20:39:39,487 INFO L428 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:39,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:39,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1252885336, now seen corresponding path program 260 times [2021-03-10 20:39:39,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:39,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222985853] [2021-03-10 20:39:39,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:39,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:39,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222985853] [2021-03-10 20:39:39,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:39,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:39,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059525427] [2021-03-10 20:39:39,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:39,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:39,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:39,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:39,556 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) [2021-03-10 20:39:39,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:39,737 INFO L93 Difference]: Finished difference Result 1363 states and 3672 transitions. [2021-03-10 20:39:39,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:39,737 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:39,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:39,739 INFO L225 Difference]: With dead ends: 1363 [2021-03-10 20:39:39,739 INFO L226 Difference]: Without dead ends: 1274 [2021-03-10 20:39:39,739 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:39,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-03-10 20:39:39,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1247. [2021-03-10 20:39:39,749 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) [2021-03-10 20:39:39,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 3390 transitions. [2021-03-10 20:39:39,750 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 3390 transitions. Word has length 26 [2021-03-10 20:39:39,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:39,750 INFO L480 AbstractCegarLoop]: Abstraction has 1247 states and 3390 transitions. [2021-03-10 20:39:39,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:39,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 3390 transitions. [2021-03-10 20:39:39,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:39,751 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:39,751 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:39,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-03-10 20:39:39,751 INFO L428 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:39,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:39,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1266038908, now seen corresponding path program 261 times [2021-03-10 20:39:39,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:39,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017241215] [2021-03-10 20:39:39,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:39,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:39,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017241215] [2021-03-10 20:39:39,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:39,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:39,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119085454] [2021-03-10 20:39:39,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:39,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:39,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:39,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:39,815 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) [2021-03-10 20:39:39,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:39,994 INFO L93 Difference]: Finished difference Result 1378 states and 3704 transitions. [2021-03-10 20:39:39,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:39,994 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:39,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:39,995 INFO L225 Difference]: With dead ends: 1378 [2021-03-10 20:39:39,995 INFO L226 Difference]: Without dead ends: 1269 [2021-03-10 20:39:39,995 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:39,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2021-03-10 20:39:40,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1243. [2021-03-10 20:39:40,005 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) [2021-03-10 20:39:40,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 3376 transitions. [2021-03-10 20:39:40,007 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 3376 transitions. Word has length 26 [2021-03-10 20:39:40,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:40,007 INFO L480 AbstractCegarLoop]: Abstraction has 1243 states and 3376 transitions. [2021-03-10 20:39:40,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:40,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 3376 transitions. [2021-03-10 20:39:40,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:40,008 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:40,008 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:40,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-03-10 20:39:40,008 INFO L428 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:40,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:40,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1645343992, now seen corresponding path program 262 times [2021-03-10 20:39:40,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:40,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435762012] [2021-03-10 20:39:40,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:40,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:40,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435762012] [2021-03-10 20:39:40,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:40,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:40,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564930166] [2021-03-10 20:39:40,070 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:40,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:40,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:40,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:40,070 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) [2021-03-10 20:39:40,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:40,251 INFO L93 Difference]: Finished difference Result 1384 states and 3725 transitions. [2021-03-10 20:39:40,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:40,252 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:40,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:40,253 INFO L225 Difference]: With dead ends: 1384 [2021-03-10 20:39:40,253 INFO L226 Difference]: Without dead ends: 1303 [2021-03-10 20:39:40,253 INFO L775 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 [2021-03-10 20:39:40,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2021-03-10 20:39:40,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1245. [2021-03-10 20:39:40,263 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) [2021-03-10 20:39:40,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 3383 transitions. [2021-03-10 20:39:40,264 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 3383 transitions. Word has length 26 [2021-03-10 20:39:40,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:40,264 INFO L480 AbstractCegarLoop]: Abstraction has 1245 states and 3383 transitions. [2021-03-10 20:39:40,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:40,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 3383 transitions. [2021-03-10 20:39:40,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:40,266 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:40,266 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:40,266 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-03-10 20:39:40,266 INFO L428 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:40,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:40,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1780178696, now seen corresponding path program 263 times [2021-03-10 20:39:40,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:40,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620263951] [2021-03-10 20:39:40,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:40,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:40,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620263951] [2021-03-10 20:39:40,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:40,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:40,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744672844] [2021-03-10 20:39:40,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:40,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:40,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:40,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:40,328 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) [2021-03-10 20:39:40,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:40,508 INFO L93 Difference]: Finished difference Result 1389 states and 3727 transitions. [2021-03-10 20:39:40,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:40,509 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 [2021-03-10 20:39:40,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:40,510 INFO L225 Difference]: With dead ends: 1389 [2021-03-10 20:39:40,510 INFO L226 Difference]: Without dead ends: 1292 [2021-03-10 20:39:40,510 INFO L775 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 [2021-03-10 20:39:40,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-03-10 20:39:40,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1241. [2021-03-10 20:39:40,520 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) [2021-03-10 20:39:40,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 3368 transitions. [2021-03-10 20:39:40,522 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 3368 transitions. Word has length 26 [2021-03-10 20:39:40,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:40,522 INFO L480 AbstractCegarLoop]: Abstraction has 1241 states and 3368 transitions. [2021-03-10 20:39:40,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:40,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 3368 transitions. [2021-03-10 20:39:40,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:40,523 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:40,523 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:40,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-03-10 20:39:40,523 INFO L428 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:40,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:40,523 INFO L82 PathProgramCache]: Analyzing trace with hash 140505174, now seen corresponding path program 264 times [2021-03-10 20:39:40,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:40,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317813587] [2021-03-10 20:39:40,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:40,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:40,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317813587] [2021-03-10 20:39:40,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:40,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:40,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547364513] [2021-03-10 20:39:40,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:40,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:40,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:40,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:40,595 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) [2021-03-10 20:39:40,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:40,775 INFO L93 Difference]: Finished difference Result 1366 states and 3673 transitions. [2021-03-10 20:39:40,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:40,776 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:40,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:40,777 INFO L225 Difference]: With dead ends: 1366 [2021-03-10 20:39:40,777 INFO L226 Difference]: Without dead ends: 1279 [2021-03-10 20:39:40,777 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:40,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2021-03-10 20:39:40,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1242. [2021-03-10 20:39:40,787 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) [2021-03-10 20:39:40,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 3369 transitions. [2021-03-10 20:39:40,788 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 3369 transitions. Word has length 26 [2021-03-10 20:39:40,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:40,788 INFO L480 AbstractCegarLoop]: Abstraction has 1242 states and 3369 transitions. [2021-03-10 20:39:40,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:40,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 3369 transitions. [2021-03-10 20:39:40,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:40,789 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:40,789 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:40,790 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-03-10 20:39:40,790 INFO L428 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:40,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:40,790 INFO L82 PathProgramCache]: Analyzing trace with hash -2034524430, now seen corresponding path program 265 times [2021-03-10 20:39:40,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:40,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887873280] [2021-03-10 20:39:40,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:40,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:40,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887873280] [2021-03-10 20:39:40,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:40,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:40,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897193491] [2021-03-10 20:39:40,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:40,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:40,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:40,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:40,853 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) [2021-03-10 20:39:41,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:41,035 INFO L93 Difference]: Finished difference Result 1386 states and 3719 transitions. [2021-03-10 20:39:41,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:41,035 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:41,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:41,037 INFO L225 Difference]: With dead ends: 1386 [2021-03-10 20:39:41,037 INFO L226 Difference]: Without dead ends: 1281 [2021-03-10 20:39:41,037 INFO L775 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 [2021-03-10 20:39:41,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-03-10 20:39:41,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1236. [2021-03-10 20:39:41,047 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) [2021-03-10 20:39:41,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 3354 transitions. [2021-03-10 20:39:41,048 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 3354 transitions. Word has length 26 [2021-03-10 20:39:41,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:41,048 INFO L480 AbstractCegarLoop]: Abstraction has 1236 states and 3354 transitions. [2021-03-10 20:39:41,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:41,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 3354 transitions. [2021-03-10 20:39:41,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:41,049 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:41,049 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:41,049 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-03-10 20:39:41,049 INFO L428 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:41,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:41,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1529663814, now seen corresponding path program 266 times [2021-03-10 20:39:41,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:41,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533530596] [2021-03-10 20:39:41,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:41,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:41,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533530596] [2021-03-10 20:39:41,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:41,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:41,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264825063] [2021-03-10 20:39:41,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:41,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:41,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:41,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:41,117 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) [2021-03-10 20:39:41,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:41,296 INFO L93 Difference]: Finished difference Result 1442 states and 3908 transitions. [2021-03-10 20:39:41,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:41,297 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:41,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:41,298 INFO L225 Difference]: With dead ends: 1442 [2021-03-10 20:39:41,298 INFO L226 Difference]: Without dead ends: 1351 [2021-03-10 20:39:41,298 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:41,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-03-10 20:39:41,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1238. [2021-03-10 20:39:41,308 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) [2021-03-10 20:39:41,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 3356 transitions. [2021-03-10 20:39:41,310 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 3356 transitions. Word has length 26 [2021-03-10 20:39:41,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:41,310 INFO L480 AbstractCegarLoop]: Abstraction has 1238 states and 3356 transitions. [2021-03-10 20:39:41,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:41,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 3356 transitions. [2021-03-10 20:39:41,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:41,311 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:41,311 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:41,311 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-03-10 20:39:41,311 INFO L428 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:41,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:41,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1373158936, now seen corresponding path program 267 times [2021-03-10 20:39:41,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:41,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376615975] [2021-03-10 20:39:41,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:41,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:41,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376615975] [2021-03-10 20:39:41,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:41,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:41,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745954876] [2021-03-10 20:39:41,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:41,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:41,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:41,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:41,374 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) [2021-03-10 20:39:41,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:41,554 INFO L93 Difference]: Finished difference Result 1473 states and 3992 transitions. [2021-03-10 20:39:41,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:41,554 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 [2021-03-10 20:39:41,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:41,556 INFO L225 Difference]: With dead ends: 1473 [2021-03-10 20:39:41,556 INFO L226 Difference]: Without dead ends: 1381 [2021-03-10 20:39:41,556 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:41,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2021-03-10 20:39:41,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1234. [2021-03-10 20:39:41,566 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) [2021-03-10 20:39:41,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3342 transitions. [2021-03-10 20:39:41,568 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3342 transitions. Word has length 26 [2021-03-10 20:39:41,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:41,568 INFO L480 AbstractCegarLoop]: Abstraction has 1234 states and 3342 transitions. [2021-03-10 20:39:41,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:41,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3342 transitions. [2021-03-10 20:39:41,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:41,569 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:41,569 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:41,570 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-03-10 20:39:41,570 INFO L428 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:41,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:41,570 INFO L82 PathProgramCache]: Analyzing trace with hash 998145596, now seen corresponding path program 268 times [2021-03-10 20:39:41,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:41,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634517268] [2021-03-10 20:39:41,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:41,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:41,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634517268] [2021-03-10 20:39:41,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:41,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:41,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113075080] [2021-03-10 20:39:41,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:41,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:41,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:41,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:41,623 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) [2021-03-10 20:39:41,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:41,780 INFO L93 Difference]: Finished difference Result 1450 states and 3914 transitions. [2021-03-10 20:39:41,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:41,780 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 [2021-03-10 20:39:41,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:41,782 INFO L225 Difference]: With dead ends: 1450 [2021-03-10 20:39:41,782 INFO L226 Difference]: Without dead ends: 1359 [2021-03-10 20:39:41,782 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:41,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2021-03-10 20:39:41,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1260. [2021-03-10 20:39:41,792 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) [2021-03-10 20:39:41,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 3414 transitions. [2021-03-10 20:39:41,794 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 3414 transitions. Word has length 26 [2021-03-10 20:39:41,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:41,794 INFO L480 AbstractCegarLoop]: Abstraction has 1260 states and 3414 transitions. [2021-03-10 20:39:41,794 INFO L481 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) [2021-03-10 20:39:41,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 3414 transitions. [2021-03-10 20:39:41,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:41,795 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:41,795 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:41,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-03-10 20:39:41,795 INFO L428 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:41,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:41,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1867590204, now seen corresponding path program 269 times [2021-03-10 20:39:41,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:41,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656699154] [2021-03-10 20:39:41,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:41,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656699154] [2021-03-10 20:39:41,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:41,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:41,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523987945] [2021-03-10 20:39:41,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:41,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:41,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:41,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:41,865 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) [2021-03-10 20:39:42,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:42,043 INFO L93 Difference]: Finished difference Result 1501 states and 4029 transitions. [2021-03-10 20:39:42,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:42,044 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:42,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:42,045 INFO L225 Difference]: With dead ends: 1501 [2021-03-10 20:39:42,045 INFO L226 Difference]: Without dead ends: 1304 [2021-03-10 20:39:42,045 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:42,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-03-10 20:39:42,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1244. [2021-03-10 20:39:42,055 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) [2021-03-10 20:39:42,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3349 transitions. [2021-03-10 20:39:42,057 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3349 transitions. Word has length 26 [2021-03-10 20:39:42,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:42,057 INFO L480 AbstractCegarLoop]: Abstraction has 1244 states and 3349 transitions. [2021-03-10 20:39:42,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:42,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3349 transitions. [2021-03-10 20:39:42,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:42,058 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:42,058 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:42,058 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-03-10 20:39:42,058 INFO L428 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:42,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:42,058 INFO L82 PathProgramCache]: Analyzing trace with hash -719595174, now seen corresponding path program 270 times [2021-03-10 20:39:42,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:42,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370652951] [2021-03-10 20:39:42,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:42,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:42,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370652951] [2021-03-10 20:39:42,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:42,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:42,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708374000] [2021-03-10 20:39:42,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:42,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:42,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:42,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:42,122 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) [2021-03-10 20:39:42,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:42,303 INFO L93 Difference]: Finished difference Result 1399 states and 3720 transitions. [2021-03-10 20:39:42,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:42,303 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:42,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:42,305 INFO L225 Difference]: With dead ends: 1399 [2021-03-10 20:39:42,305 INFO L226 Difference]: Without dead ends: 1304 [2021-03-10 20:39:42,305 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:42,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-03-10 20:39:42,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1244. [2021-03-10 20:39:42,315 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) [2021-03-10 20:39:42,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3349 transitions. [2021-03-10 20:39:42,316 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3349 transitions. Word has length 26 [2021-03-10 20:39:42,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:42,316 INFO L480 AbstractCegarLoop]: Abstraction has 1244 states and 3349 transitions. [2021-03-10 20:39:42,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:42,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3349 transitions. [2021-03-10 20:39:42,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:42,318 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:42,318 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:42,318 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-03-10 20:39:42,318 INFO L428 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:42,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:42,318 INFO L82 PathProgramCache]: Analyzing trace with hash 149849434, now seen corresponding path program 271 times [2021-03-10 20:39:42,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:42,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587969571] [2021-03-10 20:39:42,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:42,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:42,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587969571] [2021-03-10 20:39:42,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:42,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:42,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934876335] [2021-03-10 20:39:42,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:42,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:42,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:42,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:42,388 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) [2021-03-10 20:39:42,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:42,572 INFO L93 Difference]: Finished difference Result 1389 states and 3693 transitions. [2021-03-10 20:39:42,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:42,572 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:42,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:42,573 INFO L225 Difference]: With dead ends: 1389 [2021-03-10 20:39:42,573 INFO L226 Difference]: Without dead ends: 1292 [2021-03-10 20:39:42,574 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:42,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-03-10 20:39:42,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1244. [2021-03-10 20:39:42,584 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) [2021-03-10 20:39:42,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3347 transitions. [2021-03-10 20:39:42,585 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3347 transitions. Word has length 26 [2021-03-10 20:39:42,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:42,586 INFO L480 AbstractCegarLoop]: Abstraction has 1244 states and 3347 transitions. [2021-03-10 20:39:42,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:42,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3347 transitions. [2021-03-10 20:39:42,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:42,587 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:42,587 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:42,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-03-10 20:39:42,587 INFO L428 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:42,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:42,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1305708224, now seen corresponding path program 272 times [2021-03-10 20:39:42,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:42,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700285737] [2021-03-10 20:39:42,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:42,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:42,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700285737] [2021-03-10 20:39:42,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:42,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:42,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488777860] [2021-03-10 20:39:42,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:42,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:42,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:42,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:42,657 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) [2021-03-10 20:39:42,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:42,841 INFO L93 Difference]: Finished difference Result 1371 states and 3646 transitions. [2021-03-10 20:39:42,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:42,841 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:42,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:42,842 INFO L225 Difference]: With dead ends: 1371 [2021-03-10 20:39:42,842 INFO L226 Difference]: Without dead ends: 1266 [2021-03-10 20:39:42,842 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:42,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2021-03-10 20:39:42,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1232. [2021-03-10 20:39:42,852 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) [2021-03-10 20:39:42,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 3323 transitions. [2021-03-10 20:39:42,853 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 3323 transitions. Word has length 26 [2021-03-10 20:39:42,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:42,854 INFO L480 AbstractCegarLoop]: Abstraction has 1232 states and 3323 transitions. [2021-03-10 20:39:42,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:42,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 3323 transitions. [2021-03-10 20:39:42,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:42,855 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:42,855 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:42,855 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-03-10 20:39:42,855 INFO L428 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:42,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:42,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1117934054, now seen corresponding path program 273 times [2021-03-10 20:39:42,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:42,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136498457] [2021-03-10 20:39:42,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:42,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:42,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136498457] [2021-03-10 20:39:42,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:42,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:42,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918591988] [2021-03-10 20:39:42,906 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:42,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:42,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:42,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:42,907 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) [2021-03-10 20:39:43,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:43,047 INFO L93 Difference]: Finished difference Result 1470 states and 3952 transitions. [2021-03-10 20:39:43,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:43,048 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:43,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:43,049 INFO L225 Difference]: With dead ends: 1470 [2021-03-10 20:39:43,049 INFO L226 Difference]: Without dead ends: 1389 [2021-03-10 20:39:43,049 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:43,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2021-03-10 20:39:43,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1270. [2021-03-10 20:39:43,059 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) [2021-03-10 20:39:43,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 3430 transitions. [2021-03-10 20:39:43,061 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 3430 transitions. Word has length 26 [2021-03-10 20:39:43,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:43,061 INFO L480 AbstractCegarLoop]: Abstraction has 1270 states and 3430 transitions. [2021-03-10 20:39:43,061 INFO L481 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) [2021-03-10 20:39:43,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 3430 transitions. [2021-03-10 20:39:43,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:43,062 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:43,062 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:43,062 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-03-10 20:39:43,062 INFO L428 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:43,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:43,063 INFO L82 PathProgramCache]: Analyzing trace with hash -248489446, now seen corresponding path program 274 times [2021-03-10 20:39:43,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:43,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002650717] [2021-03-10 20:39:43,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:43,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:43,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002650717] [2021-03-10 20:39:43,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:43,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:43,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156251677] [2021-03-10 20:39:43,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:43,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:43,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:43,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:43,125 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) [2021-03-10 20:39:43,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:43,303 INFO L93 Difference]: Finished difference Result 1525 states and 4077 transitions. [2021-03-10 20:39:43,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:43,303 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:43,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:43,305 INFO L225 Difference]: With dead ends: 1525 [2021-03-10 20:39:43,305 INFO L226 Difference]: Without dead ends: 1330 [2021-03-10 20:39:43,305 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:43,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-03-10 20:39:43,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1232. [2021-03-10 20:39:43,314 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) [2021-03-10 20:39:43,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 3311 transitions. [2021-03-10 20:39:43,316 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 3311 transitions. Word has length 26 [2021-03-10 20:39:43,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:43,316 INFO L480 AbstractCegarLoop]: Abstraction has 1232 states and 3311 transitions. [2021-03-10 20:39:43,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:43,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 3311 transitions. [2021-03-10 20:39:43,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:43,317 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:43,317 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:43,317 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-03-10 20:39:43,317 INFO L428 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:43,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:43,317 INFO L82 PathProgramCache]: Analyzing trace with hash -236549542, now seen corresponding path program 275 times [2021-03-10 20:39:43,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:43,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712118652] [2021-03-10 20:39:43,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:43,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:43,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712118652] [2021-03-10 20:39:43,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:43,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:43,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749415233] [2021-03-10 20:39:43,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:43,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:43,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:43,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:43,379 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) [2021-03-10 20:39:43,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:43,560 INFO L93 Difference]: Finished difference Result 1421 states and 3771 transitions. [2021-03-10 20:39:43,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:43,561 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:43,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:43,562 INFO L225 Difference]: With dead ends: 1421 [2021-03-10 20:39:43,562 INFO L226 Difference]: Without dead ends: 1334 [2021-03-10 20:39:43,562 INFO L775 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 [2021-03-10 20:39:43,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2021-03-10 20:39:43,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1222. [2021-03-10 20:39:43,573 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) [2021-03-10 20:39:43,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 3287 transitions. [2021-03-10 20:39:43,574 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 3287 transitions. Word has length 26 [2021-03-10 20:39:43,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:43,574 INFO L480 AbstractCegarLoop]: Abstraction has 1222 states and 3287 transitions. [2021-03-10 20:39:43,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:43,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 3287 transitions. [2021-03-10 20:39:43,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:43,575 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:43,575 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:43,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-03-10 20:39:43,575 INFO L428 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:43,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:43,576 INFO L82 PathProgramCache]: Analyzing trace with hash 632895066, now seen corresponding path program 276 times [2021-03-10 20:39:43,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:43,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242893049] [2021-03-10 20:39:43,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:43,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:43,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242893049] [2021-03-10 20:39:43,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:43,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:43,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018632004] [2021-03-10 20:39:43,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:43,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:43,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:43,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:43,645 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) [2021-03-10 20:39:43,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:43,834 INFO L93 Difference]: Finished difference Result 1394 states and 3706 transitions. [2021-03-10 20:39:43,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:43,834 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 [2021-03-10 20:39:43,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:43,835 INFO L225 Difference]: With dead ends: 1394 [2021-03-10 20:39:43,835 INFO L226 Difference]: Without dead ends: 1297 [2021-03-10 20:39:43,835 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:43,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2021-03-10 20:39:43,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1237. [2021-03-10 20:39:43,849 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) [2021-03-10 20:39:43,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 3323 transitions. [2021-03-10 20:39:43,851 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 3323 transitions. Word has length 26 [2021-03-10 20:39:43,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:43,851 INFO L480 AbstractCegarLoop]: Abstraction has 1237 states and 3323 transitions. [2021-03-10 20:39:43,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:43,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 3323 transitions. [2021-03-10 20:39:43,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:43,852 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:43,852 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:43,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-03-10 20:39:43,852 INFO L428 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:43,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:43,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1445097654, now seen corresponding path program 277 times [2021-03-10 20:39:43,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:43,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279251324] [2021-03-10 20:39:43,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:43,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:43,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279251324] [2021-03-10 20:39:43,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:43,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:43,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103539564] [2021-03-10 20:39:43,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:43,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:43,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:43,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:43,921 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) [2021-03-10 20:39:44,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:44,107 INFO L93 Difference]: Finished difference Result 1383 states and 3684 transitions. [2021-03-10 20:39:44,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:44,108 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 [2021-03-10 20:39:44,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:44,109 INFO L225 Difference]: With dead ends: 1383 [2021-03-10 20:39:44,109 INFO L226 Difference]: Without dead ends: 1281 [2021-03-10 20:39:44,109 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:44,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-03-10 20:39:44,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1234. [2021-03-10 20:39:44,119 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) [2021-03-10 20:39:44,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3315 transitions. [2021-03-10 20:39:44,120 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3315 transitions. Word has length 26 [2021-03-10 20:39:44,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:44,120 INFO L480 AbstractCegarLoop]: Abstraction has 1234 states and 3315 transitions. [2021-03-10 20:39:44,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:44,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3315 transitions. [2021-03-10 20:39:44,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:44,121 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:44,122 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:44,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-03-10 20:39:44,122 INFO L428 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:44,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:44,122 INFO L82 PathProgramCache]: Analyzing trace with hash 415683934, now seen corresponding path program 278 times [2021-03-10 20:39:44,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:44,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594899322] [2021-03-10 20:39:44,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:44,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:44,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594899322] [2021-03-10 20:39:44,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:44,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:44,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159531124] [2021-03-10 20:39:44,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:44,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:44,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:44,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:44,186 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) [2021-03-10 20:39:44,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:44,363 INFO L93 Difference]: Finished difference Result 1413 states and 3754 transitions. [2021-03-10 20:39:44,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:44,364 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:44,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:44,365 INFO L225 Difference]: With dead ends: 1413 [2021-03-10 20:39:44,365 INFO L226 Difference]: Without dead ends: 1284 [2021-03-10 20:39:44,365 INFO L775 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 [2021-03-10 20:39:44,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2021-03-10 20:39:44,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1234. [2021-03-10 20:39:44,375 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) [2021-03-10 20:39:44,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3311 transitions. [2021-03-10 20:39:44,377 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3311 transitions. Word has length 26 [2021-03-10 20:39:44,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:44,377 INFO L480 AbstractCegarLoop]: Abstraction has 1234 states and 3311 transitions. [2021-03-10 20:39:44,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:44,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3311 transitions. [2021-03-10 20:39:44,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:44,378 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:44,378 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:44,378 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-03-10 20:39:44,378 INFO L428 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:44,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:44,378 INFO L82 PathProgramCache]: Analyzing trace with hash -444631560, now seen corresponding path program 279 times [2021-03-10 20:39:44,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:44,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874899528] [2021-03-10 20:39:44,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:44,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:44,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874899528] [2021-03-10 20:39:44,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:44,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:44,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972628177] [2021-03-10 20:39:44,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:44,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:44,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:44,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:44,458 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) [2021-03-10 20:39:44,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:44,640 INFO L93 Difference]: Finished difference Result 1364 states and 3627 transitions. [2021-03-10 20:39:44,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:44,640 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:44,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:44,642 INFO L225 Difference]: With dead ends: 1364 [2021-03-10 20:39:44,642 INFO L226 Difference]: Without dead ends: 1283 [2021-03-10 20:39:44,642 INFO L775 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 [2021-03-10 20:39:44,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-03-10 20:39:44,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1235. [2021-03-10 20:39:44,651 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) [2021-03-10 20:39:44,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 3315 transitions. [2021-03-10 20:39:44,653 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 3315 transitions. Word has length 26 [2021-03-10 20:39:44,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:44,653 INFO L480 AbstractCegarLoop]: Abstraction has 1235 states and 3315 transitions. [2021-03-10 20:39:44,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:44,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 3315 transitions. [2021-03-10 20:39:44,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:44,654 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:44,654 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:44,654 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-03-10 20:39:44,654 INFO L428 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:44,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:44,654 INFO L82 PathProgramCache]: Analyzing trace with hash 424813048, now seen corresponding path program 280 times [2021-03-10 20:39:44,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:44,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658180395] [2021-03-10 20:39:44,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:44,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658180395] [2021-03-10 20:39:44,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:44,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:44,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535110582] [2021-03-10 20:39:44,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:44,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:44,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:44,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:44,718 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) [2021-03-10 20:39:44,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:44,905 INFO L93 Difference]: Finished difference Result 1374 states and 3654 transitions. [2021-03-10 20:39:44,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:44,906 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 [2021-03-10 20:39:44,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:44,907 INFO L225 Difference]: With dead ends: 1374 [2021-03-10 20:39:44,907 INFO L226 Difference]: Without dead ends: 1277 [2021-03-10 20:39:44,907 INFO L775 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 [2021-03-10 20:39:44,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2021-03-10 20:39:44,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1236. [2021-03-10 20:39:44,917 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) [2021-03-10 20:39:44,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 3317 transitions. [2021-03-10 20:39:44,918 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 3317 transitions. Word has length 26 [2021-03-10 20:39:44,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:44,918 INFO L480 AbstractCegarLoop]: Abstraction has 1236 states and 3317 transitions. [2021-03-10 20:39:44,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:44,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 3317 transitions. [2021-03-10 20:39:44,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:44,919 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:44,919 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:44,919 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-03-10 20:39:44,920 INFO L428 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:44,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:44,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1043898182, now seen corresponding path program 281 times [2021-03-10 20:39:44,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:44,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992490636] [2021-03-10 20:39:44,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:44,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:44,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992490636] [2021-03-10 20:39:44,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:44,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:44,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315487404] [2021-03-10 20:39:44,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:44,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:44,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:44,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:44,990 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) [2021-03-10 20:39:45,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:45,176 INFO L93 Difference]: Finished difference Result 1361 states and 3614 transitions. [2021-03-10 20:39:45,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:45,176 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:45,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:45,178 INFO L225 Difference]: With dead ends: 1361 [2021-03-10 20:39:45,178 INFO L226 Difference]: Without dead ends: 1270 [2021-03-10 20:39:45,178 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:45,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2021-03-10 20:39:45,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1230. [2021-03-10 20:39:45,187 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) [2021-03-10 20:39:45,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 3293 transitions. [2021-03-10 20:39:45,189 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 3293 transitions. Word has length 26 [2021-03-10 20:39:45,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:45,189 INFO L480 AbstractCegarLoop]: Abstraction has 1230 states and 3293 transitions. [2021-03-10 20:39:45,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:45,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 3293 transitions. [2021-03-10 20:39:45,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:45,190 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:45,190 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:45,190 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-03-10 20:39:45,190 INFO L428 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:45,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:45,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1030744610, now seen corresponding path program 282 times [2021-03-10 20:39:45,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:45,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115265949] [2021-03-10 20:39:45,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:45,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:45,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115265949] [2021-03-10 20:39:45,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:45,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:45,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388768458] [2021-03-10 20:39:45,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:45,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:45,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:45,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:45,254 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) [2021-03-10 20:39:45,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:45,442 INFO L93 Difference]: Finished difference Result 1343 states and 3570 transitions. [2021-03-10 20:39:45,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:45,443 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:45,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:45,444 INFO L225 Difference]: With dead ends: 1343 [2021-03-10 20:39:45,444 INFO L226 Difference]: Without dead ends: 1244 [2021-03-10 20:39:45,444 INFO L775 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 [2021-03-10 20:39:45,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2021-03-10 20:39:45,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1229. [2021-03-10 20:39:45,454 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) [2021-03-10 20:39:45,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 3292 transitions. [2021-03-10 20:39:45,455 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 3292 transitions. Word has length 26 [2021-03-10 20:39:45,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:45,455 INFO L480 AbstractCegarLoop]: Abstraction has 1229 states and 3292 transitions. [2021-03-10 20:39:45,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:45,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 3292 transitions. [2021-03-10 20:39:45,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:45,456 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:45,456 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:45,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-03-10 20:39:45,456 INFO L428 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:45,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:45,456 INFO L82 PathProgramCache]: Analyzing trace with hash -651439526, now seen corresponding path program 283 times [2021-03-10 20:39:45,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:45,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481383415] [2021-03-10 20:39:45,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:45,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:45,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481383415] [2021-03-10 20:39:45,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:45,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:45,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688459611] [2021-03-10 20:39:45,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:45,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:45,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:45,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:45,520 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) [2021-03-10 20:39:45,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:45,700 INFO L93 Difference]: Finished difference Result 1364 states and 3621 transitions. [2021-03-10 20:39:45,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:45,700 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:45,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:45,701 INFO L225 Difference]: With dead ends: 1364 [2021-03-10 20:39:45,701 INFO L226 Difference]: Without dead ends: 1283 [2021-03-10 20:39:45,701 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:45,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-03-10 20:39:45,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1229. [2021-03-10 20:39:45,711 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) [2021-03-10 20:39:45,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 3294 transitions. [2021-03-10 20:39:45,712 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 3294 transitions. Word has length 26 [2021-03-10 20:39:45,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:45,712 INFO L480 AbstractCegarLoop]: Abstraction has 1229 states and 3294 transitions. [2021-03-10 20:39:45,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:45,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 3294 transitions. [2021-03-10 20:39:45,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:45,713 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:45,713 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:45,714 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-03-10 20:39:45,714 INFO L428 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:45,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:45,714 INFO L82 PathProgramCache]: Analyzing trace with hash 218005082, now seen corresponding path program 284 times [2021-03-10 20:39:45,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:45,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805014489] [2021-03-10 20:39:45,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:45,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:45,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805014489] [2021-03-10 20:39:45,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:45,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:45,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322048897] [2021-03-10 20:39:45,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:45,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:45,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:45,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:45,785 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) [2021-03-10 20:39:45,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:45,971 INFO L93 Difference]: Finished difference Result 1372 states and 3640 transitions. [2021-03-10 20:39:45,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:45,971 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 [2021-03-10 20:39:45,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:45,972 INFO L225 Difference]: With dead ends: 1372 [2021-03-10 20:39:45,972 INFO L226 Difference]: Without dead ends: 1275 [2021-03-10 20:39:45,972 INFO L775 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 [2021-03-10 20:39:45,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2021-03-10 20:39:45,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1228. [2021-03-10 20:39:45,982 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) [2021-03-10 20:39:45,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 3287 transitions. [2021-03-10 20:39:45,983 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 3287 transitions. Word has length 26 [2021-03-10 20:39:45,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:45,983 INFO L480 AbstractCegarLoop]: Abstraction has 1228 states and 3287 transitions. [2021-03-10 20:39:45,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:45,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 3287 transitions. [2021-03-10 20:39:45,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:45,984 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:45,984 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:45,985 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-03-10 20:39:45,985 INFO L428 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:45,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:45,985 INFO L82 PathProgramCache]: Analyzing trace with hash 2138688952, now seen corresponding path program 285 times [2021-03-10 20:39:45,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:45,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905538362] [2021-03-10 20:39:45,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:46,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:46,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905538362] [2021-03-10 20:39:46,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:46,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:46,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568062012] [2021-03-10 20:39:46,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:46,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:46,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:46,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:46,064 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) [2021-03-10 20:39:46,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:46,249 INFO L93 Difference]: Finished difference Result 1374 states and 3642 transitions. [2021-03-10 20:39:46,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:46,250 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:46,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:46,251 INFO L225 Difference]: With dead ends: 1374 [2021-03-10 20:39:46,251 INFO L226 Difference]: Without dead ends: 1287 [2021-03-10 20:39:46,251 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:46,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2021-03-10 20:39:46,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1225. [2021-03-10 20:39:46,261 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) [2021-03-10 20:39:46,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 3275 transitions. [2021-03-10 20:39:46,262 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 3275 transitions. Word has length 26 [2021-03-10 20:39:46,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:46,262 INFO L480 AbstractCegarLoop]: Abstraction has 1225 states and 3275 transitions. [2021-03-10 20:39:46,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:46,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 3275 transitions. [2021-03-10 20:39:46,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:46,263 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:46,263 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:46,263 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-03-10 20:39:46,263 INFO L428 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:46,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:46,263 INFO L82 PathProgramCache]: Analyzing trace with hash -36340652, now seen corresponding path program 286 times [2021-03-10 20:39:46,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:46,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587792339] [2021-03-10 20:39:46,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:46,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:46,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587792339] [2021-03-10 20:39:46,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:46,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:46,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613828248] [2021-03-10 20:39:46,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:46,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:46,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:46,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:46,333 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) [2021-03-10 20:39:46,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:46,517 INFO L93 Difference]: Finished difference Result 1354 states and 3596 transitions. [2021-03-10 20:39:46,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:46,517 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:46,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:46,518 INFO L225 Difference]: With dead ends: 1354 [2021-03-10 20:39:46,518 INFO L226 Difference]: Without dead ends: 1252 [2021-03-10 20:39:46,519 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:46,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-03-10 20:39:46,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1223. [2021-03-10 20:39:46,528 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) [2021-03-10 20:39:46,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 3273 transitions. [2021-03-10 20:39:46,530 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 3273 transitions. Word has length 26 [2021-03-10 20:39:46,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:46,530 INFO L480 AbstractCegarLoop]: Abstraction has 1223 states and 3273 transitions. [2021-03-10 20:39:46,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:46,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 3273 transitions. [2021-03-10 20:39:46,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:46,531 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:46,531 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:46,531 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-03-10 20:39:46,531 INFO L428 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:46,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:46,531 INFO L82 PathProgramCache]: Analyzing trace with hash -2094067648, now seen corresponding path program 287 times [2021-03-10 20:39:46,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:46,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079315994] [2021-03-10 20:39:46,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:46,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:46,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:46,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079315994] [2021-03-10 20:39:46,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:46,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:46,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679549066] [2021-03-10 20:39:46,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:46,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:46,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:46,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:46,593 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) [2021-03-10 20:39:46,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:46,778 INFO L93 Difference]: Finished difference Result 1345 states and 3575 transitions. [2021-03-10 20:39:46,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:46,778 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:46,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:46,779 INFO L225 Difference]: With dead ends: 1345 [2021-03-10 20:39:46,779 INFO L226 Difference]: Without dead ends: 1248 [2021-03-10 20:39:46,779 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:46,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-03-10 20:39:46,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1222. [2021-03-10 20:39:46,789 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) [2021-03-10 20:39:46,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 3270 transitions. [2021-03-10 20:39:46,790 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 3270 transitions. Word has length 26 [2021-03-10 20:39:46,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:46,790 INFO L480 AbstractCegarLoop]: Abstraction has 1222 states and 3270 transitions. [2021-03-10 20:39:46,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:46,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 3270 transitions. [2021-03-10 20:39:46,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:46,792 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:46,792 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:46,792 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-03-10 20:39:46,792 INFO L428 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:46,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:46,792 INFO L82 PathProgramCache]: Analyzing trace with hash 808755102, now seen corresponding path program 288 times [2021-03-10 20:39:46,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:46,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078454407] [2021-03-10 20:39:46,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:46,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:46,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078454407] [2021-03-10 20:39:46,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:46,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:46,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466166541] [2021-03-10 20:39:46,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:46,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:46,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:46,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:46,854 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) [2021-03-10 20:39:47,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:47,037 INFO L93 Difference]: Finished difference Result 1347 states and 3575 transitions. [2021-03-10 20:39:47,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:47,037 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:47,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:47,038 INFO L225 Difference]: With dead ends: 1347 [2021-03-10 20:39:47,038 INFO L226 Difference]: Without dead ends: 1226 [2021-03-10 20:39:47,038 INFO L775 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 [2021-03-10 20:39:47,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2021-03-10 20:39:47,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1190. [2021-03-10 20:39:47,048 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) [2021-03-10 20:39:47,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 3194 transitions. [2021-03-10 20:39:47,049 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 3194 transitions. Word has length 26 [2021-03-10 20:39:47,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:47,049 INFO L480 AbstractCegarLoop]: Abstraction has 1190 states and 3194 transitions. [2021-03-10 20:39:47,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:47,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 3194 transitions. [2021-03-10 20:39:47,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:47,050 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:47,050 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:47,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-03-10 20:39:47,050 INFO L428 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:47,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:47,051 INFO L82 PathProgramCache]: Analyzing trace with hash 934338240, now seen corresponding path program 289 times [2021-03-10 20:39:47,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:47,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371121349] [2021-03-10 20:39:47,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:47,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:47,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371121349] [2021-03-10 20:39:47,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:47,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:47,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41157206] [2021-03-10 20:39:47,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:47,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:47,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:47,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:47,102 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) [2021-03-10 20:39:47,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:47,244 INFO L93 Difference]: Finished difference Result 1469 states and 3888 transitions. [2021-03-10 20:39:47,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:47,244 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 [2021-03-10 20:39:47,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:47,245 INFO L225 Difference]: With dead ends: 1469 [2021-03-10 20:39:47,245 INFO L226 Difference]: Without dead ends: 1294 [2021-03-10 20:39:47,245 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:47,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-03-10 20:39:47,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1264. [2021-03-10 20:39:47,255 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) [2021-03-10 20:39:47,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 3363 transitions. [2021-03-10 20:39:47,257 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 3363 transitions. Word has length 26 [2021-03-10 20:39:47,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:47,257 INFO L480 AbstractCegarLoop]: Abstraction has 1264 states and 3363 transitions. [2021-03-10 20:39:47,257 INFO L481 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) [2021-03-10 20:39:47,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 3363 transitions. [2021-03-10 20:39:47,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:47,258 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:47,258 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:47,258 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-03-10 20:39:47,258 INFO L428 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:47,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:47,258 INFO L82 PathProgramCache]: Analyzing trace with hash 26087104, now seen corresponding path program 290 times [2021-03-10 20:39:47,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:47,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493753425] [2021-03-10 20:39:47,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:47,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:47,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493753425] [2021-03-10 20:39:47,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:47,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:47,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092867919] [2021-03-10 20:39:47,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:47,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:47,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:47,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:47,311 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) [2021-03-10 20:39:47,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:47,446 INFO L93 Difference]: Finished difference Result 1463 states and 3865 transitions. [2021-03-10 20:39:47,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:47,446 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 [2021-03-10 20:39:47,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:47,447 INFO L225 Difference]: With dead ends: 1463 [2021-03-10 20:39:47,447 INFO L226 Difference]: Without dead ends: 1305 [2021-03-10 20:39:47,447 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:47,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2021-03-10 20:39:47,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1277. [2021-03-10 20:39:47,457 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) [2021-03-10 20:39:47,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 3382 transitions. [2021-03-10 20:39:47,458 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 3382 transitions. Word has length 26 [2021-03-10 20:39:47,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:47,459 INFO L480 AbstractCegarLoop]: Abstraction has 1277 states and 3382 transitions. [2021-03-10 20:39:47,459 INFO L481 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) [2021-03-10 20:39:47,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 3382 transitions. [2021-03-10 20:39:47,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:47,460 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:47,460 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:47,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-03-10 20:39:47,460 INFO L428 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:47,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:47,460 INFO L82 PathProgramCache]: Analyzing trace with hash 946663070, now seen corresponding path program 291 times [2021-03-10 20:39:47,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:47,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525375907] [2021-03-10 20:39:47,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:47,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:47,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525375907] [2021-03-10 20:39:47,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:47,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:47,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787758110] [2021-03-10 20:39:47,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:47,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:47,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:47,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:47,521 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) [2021-03-10 20:39:47,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:47,657 INFO L93 Difference]: Finished difference Result 1480 states and 3886 transitions. [2021-03-10 20:39:47,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:47,657 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 [2021-03-10 20:39:47,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:47,659 INFO L225 Difference]: With dead ends: 1480 [2021-03-10 20:39:47,659 INFO L226 Difference]: Without dead ends: 1330 [2021-03-10 20:39:47,659 INFO L775 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 [2021-03-10 20:39:47,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-03-10 20:39:47,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1268. [2021-03-10 20:39:47,668 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) [2021-03-10 20:39:47,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 3355 transitions. [2021-03-10 20:39:47,670 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 3355 transitions. Word has length 26 [2021-03-10 20:39:47,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:47,670 INFO L480 AbstractCegarLoop]: Abstraction has 1268 states and 3355 transitions. [2021-03-10 20:39:47,670 INFO L481 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) [2021-03-10 20:39:47,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 3355 transitions. [2021-03-10 20:39:47,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:47,671 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:47,671 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:47,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-03-10 20:39:47,671 INFO L428 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:47,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:47,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1222936682, now seen corresponding path program 292 times [2021-03-10 20:39:47,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:47,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004123636] [2021-03-10 20:39:47,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:47,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:47,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004123636] [2021-03-10 20:39:47,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:47,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:47,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744697076] [2021-03-10 20:39:47,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:47,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:47,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:47,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:47,725 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) [2021-03-10 20:39:47,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:47,861 INFO L93 Difference]: Finished difference Result 1405 states and 3686 transitions. [2021-03-10 20:39:47,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:47,862 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 [2021-03-10 20:39:47,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:47,863 INFO L225 Difference]: With dead ends: 1405 [2021-03-10 20:39:47,863 INFO L226 Difference]: Without dead ends: 1180 [2021-03-10 20:39:47,863 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:47,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2021-03-10 20:39:47,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1124. [2021-03-10 20:39:47,871 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) [2021-03-10 20:39:47,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 2972 transitions. [2021-03-10 20:39:47,873 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 2972 transitions. Word has length 26 [2021-03-10 20:39:47,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:47,873 INFO L480 AbstractCegarLoop]: Abstraction has 1124 states and 2972 transitions. [2021-03-10 20:39:47,873 INFO L481 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) [2021-03-10 20:39:47,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 2972 transitions. [2021-03-10 20:39:47,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:47,874 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:47,874 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:47,874 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-03-10 20:39:47,874 INFO L428 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:47,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:47,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1525154592, now seen corresponding path program 293 times [2021-03-10 20:39:47,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:47,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964545692] [2021-03-10 20:39:47,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:47,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:47,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964545692] [2021-03-10 20:39:47,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:47,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:47,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174007304] [2021-03-10 20:39:47,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:47,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:47,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:47,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:47,927 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) [2021-03-10 20:39:48,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:48,066 INFO L93 Difference]: Finished difference Result 1284 states and 3343 transitions. [2021-03-10 20:39:48,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:48,066 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 [2021-03-10 20:39:48,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:48,067 INFO L225 Difference]: With dead ends: 1284 [2021-03-10 20:39:48,067 INFO L226 Difference]: Without dead ends: 1064 [2021-03-10 20:39:48,067 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:48,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2021-03-10 20:39:48,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1040. [2021-03-10 20:39:48,075 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) [2021-03-10 20:39:48,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 2714 transitions. [2021-03-10 20:39:48,076 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 2714 transitions. Word has length 26 [2021-03-10 20:39:48,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:48,076 INFO L480 AbstractCegarLoop]: Abstraction has 1040 states and 2714 transitions. [2021-03-10 20:39:48,076 INFO L481 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) [2021-03-10 20:39:48,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 2714 transitions. [2021-03-10 20:39:48,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:48,077 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:48,077 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:48,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-03-10 20:39:48,077 INFO L428 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:48,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:48,078 INFO L82 PathProgramCache]: Analyzing trace with hash 665569598, now seen corresponding path program 294 times [2021-03-10 20:39:48,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:48,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466555949] [2021-03-10 20:39:48,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:48,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:48,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466555949] [2021-03-10 20:39:48,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:48,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:48,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497276263] [2021-03-10 20:39:48,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:48,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:48,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:48,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:48,139 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) [2021-03-10 20:39:48,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:48,319 INFO L93 Difference]: Finished difference Result 1182 states and 3054 transitions. [2021-03-10 20:39:48,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:48,319 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:48,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:48,320 INFO L225 Difference]: With dead ends: 1182 [2021-03-10 20:39:48,320 INFO L226 Difference]: Without dead ends: 982 [2021-03-10 20:39:48,320 INFO L775 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 [2021-03-10 20:39:48,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2021-03-10 20:39:48,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 950. [2021-03-10 20:39:48,328 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) [2021-03-10 20:39:48,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 2488 transitions. [2021-03-10 20:39:48,329 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 2488 transitions. Word has length 26 [2021-03-10 20:39:48,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:48,329 INFO L480 AbstractCegarLoop]: Abstraction has 950 states and 2488 transitions. [2021-03-10 20:39:48,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:48,329 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 2488 transitions. [2021-03-10 20:39:48,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:48,330 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:48,330 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:48,330 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-03-10 20:39:48,330 INFO L428 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:48,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:48,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1307346048, now seen corresponding path program 295 times [2021-03-10 20:39:48,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:48,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015321555] [2021-03-10 20:39:48,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:48,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:48,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015321555] [2021-03-10 20:39:48,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:48,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:48,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008542629] [2021-03-10 20:39:48,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:48,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:48,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:48,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:48,391 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) [2021-03-10 20:39:48,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:48,572 INFO L93 Difference]: Finished difference Result 1068 states and 2776 transitions. [2021-03-10 20:39:48,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:48,572 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:48,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:48,573 INFO L225 Difference]: With dead ends: 1068 [2021-03-10 20:39:48,573 INFO L226 Difference]: Without dead ends: 975 [2021-03-10 20:39:48,574 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:48,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2021-03-10 20:39:48,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 956. [2021-03-10 20:39:48,581 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) [2021-03-10 20:39:48,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 2498 transitions. [2021-03-10 20:39:48,582 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 2498 transitions. Word has length 26 [2021-03-10 20:39:48,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:48,582 INFO L480 AbstractCegarLoop]: Abstraction has 956 states and 2498 transitions. [2021-03-10 20:39:48,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:48,582 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 2498 transitions. [2021-03-10 20:39:48,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:48,583 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:48,583 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:48,583 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-03-10 20:39:48,583 INFO L428 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:48,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:48,583 INFO L82 PathProgramCache]: Analyzing trace with hash 399094912, now seen corresponding path program 296 times [2021-03-10 20:39:48,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:48,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880909459] [2021-03-10 20:39:48,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:48,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:48,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880909459] [2021-03-10 20:39:48,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:48,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:48,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961466185] [2021-03-10 20:39:48,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:48,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:48,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:48,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:48,645 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) [2021-03-10 20:39:48,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:48,826 INFO L93 Difference]: Finished difference Result 1078 states and 2806 transitions. [2021-03-10 20:39:48,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:48,826 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:48,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:48,827 INFO L225 Difference]: With dead ends: 1078 [2021-03-10 20:39:48,827 INFO L226 Difference]: Without dead ends: 1003 [2021-03-10 20:39:48,827 INFO L775 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 [2021-03-10 20:39:48,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2021-03-10 20:39:48,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 959. [2021-03-10 20:39:48,835 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) [2021-03-10 20:39:48,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 2509 transitions. [2021-03-10 20:39:48,836 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 2509 transitions. Word has length 26 [2021-03-10 20:39:48,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:48,836 INFO L480 AbstractCegarLoop]: Abstraction has 959 states and 2509 transitions. [2021-03-10 20:39:48,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:48,836 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 2509 transitions. [2021-03-10 20:39:48,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:48,837 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:48,837 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:48,837 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-03-10 20:39:48,837 INFO L428 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:48,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:48,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1268539520, now seen corresponding path program 297 times [2021-03-10 20:39:48,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:48,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422326695] [2021-03-10 20:39:48,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:48,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:48,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422326695] [2021-03-10 20:39:48,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:48,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:48,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538850387] [2021-03-10 20:39:48,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:48,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:48,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:48,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:48,899 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) [2021-03-10 20:39:49,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:49,081 INFO L93 Difference]: Finished difference Result 1113 states and 2881 transitions. [2021-03-10 20:39:49,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:49,082 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 [2021-03-10 20:39:49,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:49,083 INFO L225 Difference]: With dead ends: 1113 [2021-03-10 20:39:49,083 INFO L226 Difference]: Without dead ends: 981 [2021-03-10 20:39:49,083 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:49,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2021-03-10 20:39:49,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 941. [2021-03-10 20:39:49,090 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) [2021-03-10 20:39:49,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 2463 transitions. [2021-03-10 20:39:49,091 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 2463 transitions. Word has length 26 [2021-03-10 20:39:49,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:49,091 INFO L480 AbstractCegarLoop]: Abstraction has 941 states and 2463 transitions. [2021-03-10 20:39:49,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:49,092 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 2463 transitions. [2021-03-10 20:39:49,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:49,092 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:49,092 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:49,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-03-10 20:39:49,092 INFO L428 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:49,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:49,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1319670878, now seen corresponding path program 298 times [2021-03-10 20:39:49,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:49,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583358581] [2021-03-10 20:39:49,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:49,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:49,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583358581] [2021-03-10 20:39:49,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:49,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:49,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946717663] [2021-03-10 20:39:49,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:49,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:49,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:49,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:49,162 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) [2021-03-10 20:39:49,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:49,350 INFO L93 Difference]: Finished difference Result 1045 states and 2715 transitions. [2021-03-10 20:39:49,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:49,350 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:49,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:49,351 INFO L225 Difference]: With dead ends: 1045 [2021-03-10 20:39:49,351 INFO L226 Difference]: Without dead ends: 955 [2021-03-10 20:39:49,351 INFO L775 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 [2021-03-10 20:39:49,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2021-03-10 20:39:49,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 926. [2021-03-10 20:39:49,358 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) [2021-03-10 20:39:49,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 2430 transitions. [2021-03-10 20:39:49,359 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 2430 transitions. Word has length 26 [2021-03-10 20:39:49,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:49,359 INFO L480 AbstractCegarLoop]: Abstraction has 926 states and 2430 transitions. [2021-03-10 20:39:49,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:49,360 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 2430 transitions. [2021-03-10 20:39:49,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:49,360 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:49,360 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:49,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-03-10 20:39:49,360 INFO L428 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:49,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:49,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1696776638, now seen corresponding path program 299 times [2021-03-10 20:39:49,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:49,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114802771] [2021-03-10 20:39:49,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:49,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:49,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114802771] [2021-03-10 20:39:49,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:49,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:49,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102085691] [2021-03-10 20:39:49,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:49,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:49,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:49,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:49,422 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) [2021-03-10 20:39:49,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:49,602 INFO L93 Difference]: Finished difference Result 1077 states and 2798 transitions. [2021-03-10 20:39:49,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:49,602 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 [2021-03-10 20:39:49,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:49,603 INFO L225 Difference]: With dead ends: 1077 [2021-03-10 20:39:49,604 INFO L226 Difference]: Without dead ends: 984 [2021-03-10 20:39:49,604 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:49,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2021-03-10 20:39:49,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 926. [2021-03-10 20:39:49,611 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) [2021-03-10 20:39:49,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 2422 transitions. [2021-03-10 20:39:49,612 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 2422 transitions. Word has length 26 [2021-03-10 20:39:49,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:49,612 INFO L480 AbstractCegarLoop]: Abstraction has 926 states and 2422 transitions. [2021-03-10 20:39:49,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:49,612 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 2422 transitions. [2021-03-10 20:39:49,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:49,613 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:49,613 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:49,613 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-03-10 20:39:49,613 INFO L428 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:49,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:49,613 INFO L82 PathProgramCache]: Analyzing trace with hash 810733658, now seen corresponding path program 300 times [2021-03-10 20:39:49,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:49,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197072724] [2021-03-10 20:39:49,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:49,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:49,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197072724] [2021-03-10 20:39:49,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:49,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:49,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693275278] [2021-03-10 20:39:49,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:49,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:49,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:49,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:49,676 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) [2021-03-10 20:39:49,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:49,857 INFO L93 Difference]: Finished difference Result 1095 states and 2837 transitions. [2021-03-10 20:39:49,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:49,858 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 [2021-03-10 20:39:49,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:49,859 INFO L225 Difference]: With dead ends: 1095 [2021-03-10 20:39:49,859 INFO L226 Difference]: Without dead ends: 1012 [2021-03-10 20:39:49,859 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:49,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2021-03-10 20:39:49,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 914. [2021-03-10 20:39:49,866 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) [2021-03-10 20:39:49,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 2395 transitions. [2021-03-10 20:39:49,867 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 2395 transitions. Word has length 26 [2021-03-10 20:39:49,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:49,867 INFO L480 AbstractCegarLoop]: Abstraction has 914 states and 2395 transitions. [2021-03-10 20:39:49,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:49,867 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 2395 transitions. [2021-03-10 20:39:49,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:49,868 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:49,868 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:49,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2021-03-10 20:39:49,868 INFO L428 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:49,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:49,868 INFO L82 PathProgramCache]: Analyzing trace with hash -758194884, now seen corresponding path program 301 times [2021-03-10 20:39:49,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:49,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864397983] [2021-03-10 20:39:49,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:49,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:49,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864397983] [2021-03-10 20:39:49,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:49,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:49,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679413268] [2021-03-10 20:39:49,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:49,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:49,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:49,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:49,930 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) [2021-03-10 20:39:50,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:50,112 INFO L93 Difference]: Finished difference Result 1015 states and 2644 transitions. [2021-03-10 20:39:50,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:50,112 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:50,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:50,113 INFO L225 Difference]: With dead ends: 1015 [2021-03-10 20:39:50,113 INFO L226 Difference]: Without dead ends: 928 [2021-03-10 20:39:50,113 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:50,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2021-03-10 20:39:50,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 876. [2021-03-10 20:39:50,120 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) [2021-03-10 20:39:50,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2300 transitions. [2021-03-10 20:39:50,121 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2300 transitions. Word has length 26 [2021-03-10 20:39:50,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:50,121 INFO L480 AbstractCegarLoop]: Abstraction has 876 states and 2300 transitions. [2021-03-10 20:39:50,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:50,121 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2300 transitions. [2021-03-10 20:39:50,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:50,122 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:50,122 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:50,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2021-03-10 20:39:50,122 INFO L428 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:50,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:50,122 INFO L82 PathProgramCache]: Analyzing trace with hash -504509764, now seen corresponding path program 302 times [2021-03-10 20:39:50,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:50,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401653964] [2021-03-10 20:39:50,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:50,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:50,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401653964] [2021-03-10 20:39:50,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:50,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:50,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406068610] [2021-03-10 20:39:50,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:50,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:50,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:50,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:50,186 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) [2021-03-10 20:39:50,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:50,365 INFO L93 Difference]: Finished difference Result 1024 states and 2650 transitions. [2021-03-10 20:39:50,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:50,365 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:50,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:50,366 INFO L225 Difference]: With dead ends: 1024 [2021-03-10 20:39:50,366 INFO L226 Difference]: Without dead ends: 949 [2021-03-10 20:39:50,366 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:50,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2021-03-10 20:39:50,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 881. [2021-03-10 20:39:50,373 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) [2021-03-10 20:39:50,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 2316 transitions. [2021-03-10 20:39:50,374 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 2316 transitions. Word has length 26 [2021-03-10 20:39:50,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:50,374 INFO L480 AbstractCegarLoop]: Abstraction has 881 states and 2316 transitions. [2021-03-10 20:39:50,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:50,374 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 2316 transitions. [2021-03-10 20:39:50,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:50,375 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:50,375 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:50,375 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2021-03-10 20:39:50,375 INFO L428 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:50,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:50,375 INFO L82 PathProgramCache]: Analyzing trace with hash 364934844, now seen corresponding path program 303 times [2021-03-10 20:39:50,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:50,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546783895] [2021-03-10 20:39:50,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:50,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546783895] [2021-03-10 20:39:50,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:50,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:50,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981628062] [2021-03-10 20:39:50,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:50,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:50,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:50,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:50,449 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) [2021-03-10 20:39:50,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:50,631 INFO L93 Difference]: Finished difference Result 1013 states and 2642 transitions. [2021-03-10 20:39:50,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:50,632 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 [2021-03-10 20:39:50,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:50,633 INFO L225 Difference]: With dead ends: 1013 [2021-03-10 20:39:50,633 INFO L226 Difference]: Without dead ends: 912 [2021-03-10 20:39:50,633 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:50,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2021-03-10 20:39:50,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 880. [2021-03-10 20:39:50,640 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) [2021-03-10 20:39:50,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 2312 transitions. [2021-03-10 20:39:50,641 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 2312 transitions. Word has length 26 [2021-03-10 20:39:50,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:50,641 INFO L480 AbstractCegarLoop]: Abstraction has 880 states and 2312 transitions. [2021-03-10 20:39:50,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:50,641 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 2312 transitions. [2021-03-10 20:39:50,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:50,641 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:50,641 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:50,642 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2021-03-10 20:39:50,642 INFO L428 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:50,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:50,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1103776386, now seen corresponding path program 304 times [2021-03-10 20:39:50,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:50,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475729942] [2021-03-10 20:39:50,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:50,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:50,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475729942] [2021-03-10 20:39:50,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:50,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:50,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420104106] [2021-03-10 20:39:50,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:50,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:50,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:50,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:50,704 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) [2021-03-10 20:39:50,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:50,883 INFO L93 Difference]: Finished difference Result 1005 states and 2609 transitions. [2021-03-10 20:39:50,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:50,884 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:50,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:50,885 INFO L225 Difference]: With dead ends: 1005 [2021-03-10 20:39:50,885 INFO L226 Difference]: Without dead ends: 924 [2021-03-10 20:39:50,885 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:50,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2021-03-10 20:39:50,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 882. [2021-03-10 20:39:50,892 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) [2021-03-10 20:39:50,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 2320 transitions. [2021-03-10 20:39:50,893 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 2320 transitions. Word has length 26 [2021-03-10 20:39:50,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:50,893 INFO L480 AbstractCegarLoop]: Abstraction has 882 states and 2320 transitions. [2021-03-10 20:39:50,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:50,893 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 2320 transitions. [2021-03-10 20:39:50,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:50,894 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:50,894 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:50,894 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2021-03-10 20:39:50,894 INFO L428 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:50,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:50,894 INFO L82 PathProgramCache]: Analyzing trace with hash -711317730, now seen corresponding path program 305 times [2021-03-10 20:39:50,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:50,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322846147] [2021-03-10 20:39:50,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:50,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:50,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322846147] [2021-03-10 20:39:50,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:50,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:50,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836920165] [2021-03-10 20:39:50,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:50,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:50,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:50,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:50,964 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) [2021-03-10 20:39:51,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:51,145 INFO L93 Difference]: Finished difference Result 1011 states and 2638 transitions. [2021-03-10 20:39:51,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:51,146 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:51,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:51,147 INFO L225 Difference]: With dead ends: 1011 [2021-03-10 20:39:51,147 INFO L226 Difference]: Without dead ends: 936 [2021-03-10 20:39:51,147 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:51,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2021-03-10 20:39:51,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 886. [2021-03-10 20:39:51,154 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) [2021-03-10 20:39:51,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 2334 transitions. [2021-03-10 20:39:51,155 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 2334 transitions. Word has length 26 [2021-03-10 20:39:51,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:51,155 INFO L480 AbstractCegarLoop]: Abstraction has 886 states and 2334 transitions. [2021-03-10 20:39:51,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:51,155 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 2334 transitions. [2021-03-10 20:39:51,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:51,156 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:51,156 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:51,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2021-03-10 20:39:51,156 INFO L428 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:51,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:51,156 INFO L82 PathProgramCache]: Analyzing trace with hash 158126878, now seen corresponding path program 306 times [2021-03-10 20:39:51,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:51,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555669162] [2021-03-10 20:39:51,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:51,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:51,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555669162] [2021-03-10 20:39:51,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:51,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:51,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737247444] [2021-03-10 20:39:51,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:51,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:51,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:51,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:51,224 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) [2021-03-10 20:39:51,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:51,410 INFO L93 Difference]: Finished difference Result 1026 states and 2678 transitions. [2021-03-10 20:39:51,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:51,411 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:51,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:51,412 INFO L225 Difference]: With dead ends: 1026 [2021-03-10 20:39:51,412 INFO L226 Difference]: Without dead ends: 925 [2021-03-10 20:39:51,412 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:51,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2021-03-10 20:39:51,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 883. [2021-03-10 20:39:51,419 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) [2021-03-10 20:39:51,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 2325 transitions. [2021-03-10 20:39:51,420 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 2325 transitions. Word has length 26 [2021-03-10 20:39:51,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:51,420 INFO L480 AbstractCegarLoop]: Abstraction has 883 states and 2325 transitions. [2021-03-10 20:39:51,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:51,420 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 2325 transitions. [2021-03-10 20:39:51,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:51,421 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:51,421 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:51,421 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2021-03-10 20:39:51,421 INFO L428 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:51,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:51,421 INFO L82 PathProgramCache]: Analyzing trace with hash 2078810748, now seen corresponding path program 307 times [2021-03-10 20:39:51,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:51,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856494752] [2021-03-10 20:39:51,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:51,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:51,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856494752] [2021-03-10 20:39:51,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:51,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:51,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740216987] [2021-03-10 20:39:51,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:51,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:51,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:51,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:51,484 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) [2021-03-10 20:39:51,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:51,668 INFO L93 Difference]: Finished difference Result 993 states and 2589 transitions. [2021-03-10 20:39:51,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:51,668 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 [2021-03-10 20:39:51,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:51,669 INFO L225 Difference]: With dead ends: 993 [2021-03-10 20:39:51,669 INFO L226 Difference]: Without dead ends: 912 [2021-03-10 20:39:51,669 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:51,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2021-03-10 20:39:51,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 884. [2021-03-10 20:39:51,676 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) [2021-03-10 20:39:51,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 2326 transitions. [2021-03-10 20:39:51,677 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 2326 transitions. Word has length 26 [2021-03-10 20:39:51,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:51,677 INFO L480 AbstractCegarLoop]: Abstraction has 884 states and 2326 transitions. [2021-03-10 20:39:51,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:51,678 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 2326 transitions. [2021-03-10 20:39:51,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:51,678 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:51,678 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:51,678 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2021-03-10 20:39:51,678 INFO L428 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:51,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:51,679 INFO L82 PathProgramCache]: Analyzing trace with hash -96218856, now seen corresponding path program 308 times [2021-03-10 20:39:51,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:51,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941665072] [2021-03-10 20:39:51,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:51,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:51,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941665072] [2021-03-10 20:39:51,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:51,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:51,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407519177] [2021-03-10 20:39:51,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:51,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:51,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:51,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:51,744 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) [2021-03-10 20:39:51,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:51,931 INFO L93 Difference]: Finished difference Result 999 states and 2604 transitions. [2021-03-10 20:39:51,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:51,932 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:51,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:51,932 INFO L225 Difference]: With dead ends: 999 [2021-03-10 20:39:51,933 INFO L226 Difference]: Without dead ends: 890 [2021-03-10 20:39:51,933 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:51,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-03-10 20:39:51,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 878. [2021-03-10 20:39:51,940 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) [2021-03-10 20:39:51,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 2313 transitions. [2021-03-10 20:39:51,941 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 2313 transitions. Word has length 26 [2021-03-10 20:39:51,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:51,941 INFO L480 AbstractCegarLoop]: Abstraction has 878 states and 2313 transitions. [2021-03-10 20:39:51,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:51,941 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 2313 transitions. [2021-03-10 20:39:51,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:51,941 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:51,942 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:51,942 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2021-03-10 20:39:51,942 INFO L428 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:51,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:51,942 INFO L82 PathProgramCache]: Analyzing trace with hash 408641760, now seen corresponding path program 309 times [2021-03-10 20:39:51,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:51,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866884192] [2021-03-10 20:39:51,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:52,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:52,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866884192] [2021-03-10 20:39:52,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:52,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:52,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915069616] [2021-03-10 20:39:52,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:52,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:52,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:52,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:52,005 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) [2021-03-10 20:39:52,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:52,186 INFO L93 Difference]: Finished difference Result 1017 states and 2638 transitions. [2021-03-10 20:39:52,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:52,186 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:52,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:52,187 INFO L225 Difference]: With dead ends: 1017 [2021-03-10 20:39:52,187 INFO L226 Difference]: Without dead ends: 938 [2021-03-10 20:39:52,187 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:52,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2021-03-10 20:39:52,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 878. [2021-03-10 20:39:52,195 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) [2021-03-10 20:39:52,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 2313 transitions. [2021-03-10 20:39:52,196 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 2313 transitions. Word has length 26 [2021-03-10 20:39:52,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:52,196 INFO L480 AbstractCegarLoop]: Abstraction has 878 states and 2313 transitions. [2021-03-10 20:39:52,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:52,196 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 2313 transitions. [2021-03-10 20:39:52,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:52,197 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:52,197 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:52,197 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2021-03-10 20:39:52,197 INFO L428 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:52,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:52,197 INFO L82 PathProgramCache]: Analyzing trace with hash -983502786, now seen corresponding path program 310 times [2021-03-10 20:39:52,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:52,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236814374] [2021-03-10 20:39:52,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:52,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:52,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236814374] [2021-03-10 20:39:52,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:52,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:52,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241436069] [2021-03-10 20:39:52,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:52,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:52,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:52,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:52,260 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) [2021-03-10 20:39:52,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:52,438 INFO L93 Difference]: Finished difference Result 986 states and 2573 transitions. [2021-03-10 20:39:52,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:52,438 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 [2021-03-10 20:39:52,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:52,439 INFO L225 Difference]: With dead ends: 986 [2021-03-10 20:39:52,439 INFO L226 Difference]: Without dead ends: 900 [2021-03-10 20:39:52,439 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:52,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2021-03-10 20:39:52,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 871. [2021-03-10 20:39:52,446 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) [2021-03-10 20:39:52,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 2296 transitions. [2021-03-10 20:39:52,447 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 2296 transitions. Word has length 26 [2021-03-10 20:39:52,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:52,447 INFO L480 AbstractCegarLoop]: Abstraction has 871 states and 2296 transitions. [2021-03-10 20:39:52,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:52,447 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 2296 transitions. [2021-03-10 20:39:52,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:52,448 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:52,448 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:52,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-03-10 20:39:52,448 INFO L428 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:52,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:52,449 INFO L82 PathProgramCache]: Analyzing trace with hash -193149290, now seen corresponding path program 311 times [2021-03-10 20:39:52,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:52,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374050512] [2021-03-10 20:39:52,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:52,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:52,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374050512] [2021-03-10 20:39:52,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:52,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:52,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915787360] [2021-03-10 20:39:52,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:52,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:52,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:52,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:52,512 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) [2021-03-10 20:39:52,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:52,690 INFO L93 Difference]: Finished difference Result 1044 states and 2714 transitions. [2021-03-10 20:39:52,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:52,690 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 [2021-03-10 20:39:52,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:52,691 INFO L225 Difference]: With dead ends: 1044 [2021-03-10 20:39:52,691 INFO L226 Difference]: Without dead ends: 907 [2021-03-10 20:39:52,691 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:52,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2021-03-10 20:39:52,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 883. [2021-03-10 20:39:52,698 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) [2021-03-10 20:39:52,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 2316 transitions. [2021-03-10 20:39:52,699 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 2316 transitions. Word has length 26 [2021-03-10 20:39:52,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:52,699 INFO L480 AbstractCegarLoop]: Abstraction has 883 states and 2316 transitions. [2021-03-10 20:39:52,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:52,699 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 2316 transitions. [2021-03-10 20:39:52,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:52,700 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:52,700 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:52,700 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2021-03-10 20:39:52,700 INFO L428 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:52,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:52,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1101400426, now seen corresponding path program 312 times [2021-03-10 20:39:52,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:52,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011006530] [2021-03-10 20:39:52,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:52,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:52,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011006530] [2021-03-10 20:39:52,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:52,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:52,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467729685] [2021-03-10 20:39:52,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:52,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:52,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:52,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:52,763 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) [2021-03-10 20:39:52,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:52,951 INFO L93 Difference]: Finished difference Result 1036 states and 2690 transitions. [2021-03-10 20:39:52,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:52,951 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:52,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:52,952 INFO L225 Difference]: With dead ends: 1036 [2021-03-10 20:39:52,952 INFO L226 Difference]: Without dead ends: 910 [2021-03-10 20:39:52,952 INFO L775 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 [2021-03-10 20:39:52,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2021-03-10 20:39:52,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 896. [2021-03-10 20:39:52,959 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) [2021-03-10 20:39:52,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2337 transitions. [2021-03-10 20:39:52,960 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2337 transitions. Word has length 26 [2021-03-10 20:39:52,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:52,960 INFO L480 AbstractCegarLoop]: Abstraction has 896 states and 2337 transitions. [2021-03-10 20:39:52,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:52,961 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2337 transitions. [2021-03-10 20:39:52,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:52,961 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:52,961 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:52,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2021-03-10 20:39:52,961 INFO L428 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:52,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:52,962 INFO L82 PathProgramCache]: Analyzing trace with hash -180824460, now seen corresponding path program 313 times [2021-03-10 20:39:52,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:52,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498843189] [2021-03-10 20:39:52,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:53,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:53,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498843189] [2021-03-10 20:39:53,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:53,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:53,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91656762] [2021-03-10 20:39:53,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:53,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:53,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:53,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:53,025 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) [2021-03-10 20:39:53,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:53,207 INFO L93 Difference]: Finished difference Result 1048 states and 2702 transitions. [2021-03-10 20:39:53,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:53,207 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:53,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:53,208 INFO L225 Difference]: With dead ends: 1048 [2021-03-10 20:39:53,208 INFO L226 Difference]: Without dead ends: 914 [2021-03-10 20:39:53,208 INFO L775 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 [2021-03-10 20:39:53,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-03-10 20:39:53,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 884. [2021-03-10 20:39:53,215 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) [2021-03-10 20:39:53,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 2305 transitions. [2021-03-10 20:39:53,216 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 2305 transitions. Word has length 26 [2021-03-10 20:39:53,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:53,216 INFO L480 AbstractCegarLoop]: Abstraction has 884 states and 2305 transitions. [2021-03-10 20:39:53,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:53,216 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 2305 transitions. [2021-03-10 20:39:53,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:53,217 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:53,217 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:53,217 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2021-03-10 20:39:53,217 INFO L428 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:53,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:53,217 INFO L82 PathProgramCache]: Analyzing trace with hash -710790132, now seen corresponding path program 314 times [2021-03-10 20:39:53,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:53,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515774897] [2021-03-10 20:39:53,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:53,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:53,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515774897] [2021-03-10 20:39:53,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:53,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:53,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879806104] [2021-03-10 20:39:53,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:53,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:53,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:53,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:53,284 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) [2021-03-10 20:39:53,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:53,465 INFO L93 Difference]: Finished difference Result 1011 states and 2623 transitions. [2021-03-10 20:39:53,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:53,466 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:53,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:53,467 INFO L225 Difference]: With dead ends: 1011 [2021-03-10 20:39:53,467 INFO L226 Difference]: Without dead ends: 865 [2021-03-10 20:39:53,467 INFO L775 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 [2021-03-10 20:39:53,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2021-03-10 20:39:53,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 845. [2021-03-10 20:39:53,473 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) [2021-03-10 20:39:53,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2216 transitions. [2021-03-10 20:39:53,474 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2216 transitions. Word has length 26 [2021-03-10 20:39:53,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:53,474 INFO L480 AbstractCegarLoop]: Abstraction has 845 states and 2216 transitions. [2021-03-10 20:39:53,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:53,474 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2216 transitions. [2021-03-10 20:39:53,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:53,475 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:53,475 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:53,475 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2021-03-10 20:39:53,475 INFO L428 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:53,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:53,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1898437632, now seen corresponding path program 315 times [2021-03-10 20:39:53,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:53,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757212726] [2021-03-10 20:39:53,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:53,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:53,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757212726] [2021-03-10 20:39:53,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:53,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:53,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759974139] [2021-03-10 20:39:53,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:53,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:53,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:53,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:53,528 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) [2021-03-10 20:39:53,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:53,672 INFO L93 Difference]: Finished difference Result 978 states and 2521 transitions. [2021-03-10 20:39:53,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:53,672 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 [2021-03-10 20:39:53,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:53,673 INFO L225 Difference]: With dead ends: 978 [2021-03-10 20:39:53,673 INFO L226 Difference]: Without dead ends: 883 [2021-03-10 20:39:53,673 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:53,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-03-10 20:39:53,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 845. [2021-03-10 20:39:53,680 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) [2021-03-10 20:39:53,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2212 transitions. [2021-03-10 20:39:53,681 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2212 transitions. Word has length 26 [2021-03-10 20:39:53,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:53,681 INFO L480 AbstractCegarLoop]: Abstraction has 845 states and 2212 transitions. [2021-03-10 20:39:53,681 INFO L481 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) [2021-03-10 20:39:53,681 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2212 transitions. [2021-03-10 20:39:53,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:53,682 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:53,682 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:53,682 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2021-03-10 20:39:53,682 INFO L428 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:53,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:53,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1247061632, now seen corresponding path program 316 times [2021-03-10 20:39:53,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:53,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884050396] [2021-03-10 20:39:53,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:53,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:53,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884050396] [2021-03-10 20:39:53,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:53,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:53,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059762274] [2021-03-10 20:39:53,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:53,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:53,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:53,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:53,745 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) [2021-03-10 20:39:53,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:53,931 INFO L93 Difference]: Finished difference Result 986 states and 2546 transitions. [2021-03-10 20:39:53,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:53,931 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 [2021-03-10 20:39:53,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:53,932 INFO L225 Difference]: With dead ends: 986 [2021-03-10 20:39:53,932 INFO L226 Difference]: Without dead ends: 911 [2021-03-10 20:39:53,932 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:53,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2021-03-10 20:39:53,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 857. [2021-03-10 20:39:53,942 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) [2021-03-10 20:39:53,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 2235 transitions. [2021-03-10 20:39:53,943 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 2235 transitions. Word has length 26 [2021-03-10 20:39:53,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:53,943 INFO L480 AbstractCegarLoop]: Abstraction has 857 states and 2235 transitions. [2021-03-10 20:39:53,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:53,943 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 2235 transitions. [2021-03-10 20:39:53,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:53,944 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:53,944 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:53,944 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2021-03-10 20:39:53,944 INFO L428 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:53,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:53,944 INFO L82 PathProgramCache]: Analyzing trace with hash 2116506240, now seen corresponding path program 317 times [2021-03-10 20:39:53,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:53,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554698158] [2021-03-10 20:39:53,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:54,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:54,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554698158] [2021-03-10 20:39:54,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:54,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:54,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760173375] [2021-03-10 20:39:54,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:54,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:54,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:54,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:54,007 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) [2021-03-10 20:39:54,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:54,191 INFO L93 Difference]: Finished difference Result 988 states and 2567 transitions. [2021-03-10 20:39:54,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:54,191 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:54,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:54,192 INFO L225 Difference]: With dead ends: 988 [2021-03-10 20:39:54,192 INFO L226 Difference]: Without dead ends: 883 [2021-03-10 20:39:54,192 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:54,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-03-10 20:39:54,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 852. [2021-03-10 20:39:54,199 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) [2021-03-10 20:39:54,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 2215 transitions. [2021-03-10 20:39:54,200 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 2215 transitions. Word has length 26 [2021-03-10 20:39:54,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:54,200 INFO L480 AbstractCegarLoop]: Abstraction has 852 states and 2215 transitions. [2021-03-10 20:39:54,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:54,200 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 2215 transitions. [2021-03-10 20:39:54,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:54,201 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:54,201 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:54,201 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2021-03-10 20:39:54,201 INFO L428 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:54,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:54,201 INFO L82 PathProgramCache]: Analyzing trace with hash -257777186, now seen corresponding path program 318 times [2021-03-10 20:39:54,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:54,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667221567] [2021-03-10 20:39:54,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:54,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:54,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667221567] [2021-03-10 20:39:54,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:54,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:54,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942915383] [2021-03-10 20:39:54,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:54,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:54,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:54,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:54,266 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) [2021-03-10 20:39:54,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:54,450 INFO L93 Difference]: Finished difference Result 953 states and 2465 transitions. [2021-03-10 20:39:54,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:54,450 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:54,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:54,451 INFO L225 Difference]: With dead ends: 953 [2021-03-10 20:39:54,451 INFO L226 Difference]: Without dead ends: 872 [2021-03-10 20:39:54,451 INFO L775 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 [2021-03-10 20:39:54,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-03-10 20:39:54,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 856. [2021-03-10 20:39:54,458 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) [2021-03-10 20:39:54,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 2224 transitions. [2021-03-10 20:39:54,459 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 2224 transitions. Word has length 26 [2021-03-10 20:39:54,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:54,459 INFO L480 AbstractCegarLoop]: Abstraction has 856 states and 2224 transitions. [2021-03-10 20:39:54,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:54,459 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 2224 transitions. [2021-03-10 20:39:54,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:54,460 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:54,460 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:54,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2021-03-10 20:39:54,460 INFO L428 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:54,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:54,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1862160506, now seen corresponding path program 319 times [2021-03-10 20:39:54,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:54,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859615023] [2021-03-10 20:39:54,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:54,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:54,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859615023] [2021-03-10 20:39:54,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:54,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:54,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644095118] [2021-03-10 20:39:54,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:54,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:54,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:54,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:54,524 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) [2021-03-10 20:39:54,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:54,709 INFO L93 Difference]: Finished difference Result 967 states and 2502 transitions. [2021-03-10 20:39:54,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:54,709 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 [2021-03-10 20:39:54,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:54,710 INFO L225 Difference]: With dead ends: 967 [2021-03-10 20:39:54,710 INFO L226 Difference]: Without dead ends: 864 [2021-03-10 20:39:54,710 INFO L775 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 [2021-03-10 20:39:54,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-03-10 20:39:54,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 853. [2021-03-10 20:39:54,717 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) [2021-03-10 20:39:54,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2218 transitions. [2021-03-10 20:39:54,718 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2218 transitions. Word has length 26 [2021-03-10 20:39:54,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:54,718 INFO L480 AbstractCegarLoop]: Abstraction has 853 states and 2218 transitions. [2021-03-10 20:39:54,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:54,718 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2218 transitions. [2021-03-10 20:39:54,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:54,719 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:54,719 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:54,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2021-03-10 20:39:54,719 INFO L428 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:54,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:54,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1927946174, now seen corresponding path program 320 times [2021-03-10 20:39:54,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:54,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233873982] [2021-03-10 20:39:54,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:54,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:54,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233873982] [2021-03-10 20:39:54,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:54,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:54,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512837988] [2021-03-10 20:39:54,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:54,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:54,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:54,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:54,783 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) [2021-03-10 20:39:54,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:54,968 INFO L93 Difference]: Finished difference Result 988 states and 2530 transitions. [2021-03-10 20:39:54,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:54,969 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:54,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:54,970 INFO L225 Difference]: With dead ends: 988 [2021-03-10 20:39:54,970 INFO L226 Difference]: Without dead ends: 905 [2021-03-10 20:39:54,970 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:54,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2021-03-10 20:39:54,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 849. [2021-03-10 20:39:54,977 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) [2021-03-10 20:39:54,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 2206 transitions. [2021-03-10 20:39:54,978 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 2206 transitions. Word has length 26 [2021-03-10 20:39:54,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:54,978 INFO L480 AbstractCegarLoop]: Abstraction has 849 states and 2206 transitions. [2021-03-10 20:39:54,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:54,978 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 2206 transitions. [2021-03-10 20:39:54,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:54,978 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:54,978 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:54,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2021-03-10 20:39:54,979 INFO L428 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:54,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:54,979 INFO L82 PathProgramCache]: Analyzing trace with hash 974876576, now seen corresponding path program 321 times [2021-03-10 20:39:54,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:54,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427793719] [2021-03-10 20:39:54,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:55,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:55,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427793719] [2021-03-10 20:39:55,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:55,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:55,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091319204] [2021-03-10 20:39:55,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:55,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:55,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:55,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:55,042 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) [2021-03-10 20:39:55,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:55,228 INFO L93 Difference]: Finished difference Result 951 states and 2457 transitions. [2021-03-10 20:39:55,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:55,228 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:55,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:55,229 INFO L225 Difference]: With dead ends: 951 [2021-03-10 20:39:55,229 INFO L226 Difference]: Without dead ends: 868 [2021-03-10 20:39:55,229 INFO L775 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 [2021-03-10 20:39:55,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-03-10 20:39:55,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 848. [2021-03-10 20:39:55,236 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) [2021-03-10 20:39:55,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 2201 transitions. [2021-03-10 20:39:55,237 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 2201 transitions. Word has length 26 [2021-03-10 20:39:55,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:55,237 INFO L480 AbstractCegarLoop]: Abstraction has 848 states and 2201 transitions. [2021-03-10 20:39:55,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:55,237 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 2201 transitions. [2021-03-10 20:39:55,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:55,238 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:55,238 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:55,238 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2021-03-10 20:39:55,238 INFO L428 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:55,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:55,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1587711036, now seen corresponding path program 322 times [2021-03-10 20:39:55,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:55,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088319306] [2021-03-10 20:39:55,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:55,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:55,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088319306] [2021-03-10 20:39:55,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:55,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:55,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120333197] [2021-03-10 20:39:55,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:55,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:55,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:55,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:55,308 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) [2021-03-10 20:39:55,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:55,495 INFO L93 Difference]: Finished difference Result 963 states and 2484 transitions. [2021-03-10 20:39:55,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:55,495 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:55,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:55,496 INFO L225 Difference]: With dead ends: 963 [2021-03-10 20:39:55,496 INFO L226 Difference]: Without dead ends: 853 [2021-03-10 20:39:55,496 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:55,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2021-03-10 20:39:55,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 831. [2021-03-10 20:39:55,503 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) [2021-03-10 20:39:55,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2161 transitions. [2021-03-10 20:39:55,503 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2161 transitions. Word has length 26 [2021-03-10 20:39:55,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:55,504 INFO L480 AbstractCegarLoop]: Abstraction has 831 states and 2161 transitions. [2021-03-10 20:39:55,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:55,504 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2161 transitions. [2021-03-10 20:39:55,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:55,504 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:55,504 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:55,504 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2021-03-10 20:39:55,504 INFO L428 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:55,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:55,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1318555276, now seen corresponding path program 323 times [2021-03-10 20:39:55,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:55,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808127313] [2021-03-10 20:39:55,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:55,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:55,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808127313] [2021-03-10 20:39:55,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:55,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:55,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763614218] [2021-03-10 20:39:55,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:55,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:55,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:55,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:55,569 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) [2021-03-10 20:39:55,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:55,750 INFO L93 Difference]: Finished difference Result 964 states and 2472 transitions. [2021-03-10 20:39:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:55,750 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 [2021-03-10 20:39:55,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:55,751 INFO L225 Difference]: With dead ends: 964 [2021-03-10 20:39:55,751 INFO L226 Difference]: Without dead ends: 883 [2021-03-10 20:39:55,751 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:55,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-03-10 20:39:55,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 827. [2021-03-10 20:39:55,757 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) [2021-03-10 20:39:55,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 2152 transitions. [2021-03-10 20:39:55,758 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 2152 transitions. Word has length 26 [2021-03-10 20:39:55,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:55,758 INFO L480 AbstractCegarLoop]: Abstraction has 827 states and 2152 transitions. [2021-03-10 20:39:55,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:55,758 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 2152 transitions. [2021-03-10 20:39:55,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:55,759 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:55,759 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:55,759 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2021-03-10 20:39:55,759 INFO L428 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:55,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:55,759 INFO L82 PathProgramCache]: Analyzing trace with hash 801382416, now seen corresponding path program 324 times [2021-03-10 20:39:55,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:55,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738952777] [2021-03-10 20:39:55,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:55,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:55,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738952777] [2021-03-10 20:39:55,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:55,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:55,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351448031] [2021-03-10 20:39:55,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:55,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:55,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:55,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:55,823 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) [2021-03-10 20:39:55,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:55,997 INFO L93 Difference]: Finished difference Result 932 states and 2411 transitions. [2021-03-10 20:39:55,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:55,997 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:55,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:55,998 INFO L225 Difference]: With dead ends: 932 [2021-03-10 20:39:55,998 INFO L226 Difference]: Without dead ends: 823 [2021-03-10 20:39:55,998 INFO L775 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 [2021-03-10 20:39:56,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-03-10 20:39:56,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 803. [2021-03-10 20:39:56,004 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) [2021-03-10 20:39:56,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 2097 transitions. [2021-03-10 20:39:56,005 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 2097 transitions. Word has length 26 [2021-03-10 20:39:56,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:56,005 INFO L480 AbstractCegarLoop]: Abstraction has 803 states and 2097 transitions. [2021-03-10 20:39:56,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:56,005 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 2097 transitions. [2021-03-10 20:39:56,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:56,006 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:56,006 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:56,006 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2021-03-10 20:39:56,006 INFO L428 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:56,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:56,006 INFO L82 PathProgramCache]: Analyzing trace with hash -934523986, now seen corresponding path program 325 times [2021-03-10 20:39:56,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:56,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650813535] [2021-03-10 20:39:56,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:56,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:56,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650813535] [2021-03-10 20:39:56,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:56,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:56,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858036444] [2021-03-10 20:39:56,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:56,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:56,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:56,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:56,071 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) [2021-03-10 20:39:56,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:56,248 INFO L93 Difference]: Finished difference Result 925 states and 2372 transitions. [2021-03-10 20:39:56,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:56,248 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:56,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:56,249 INFO L225 Difference]: With dead ends: 925 [2021-03-10 20:39:56,249 INFO L226 Difference]: Without dead ends: 828 [2021-03-10 20:39:56,249 INFO L775 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 [2021-03-10 20:39:56,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2021-03-10 20:39:56,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 788. [2021-03-10 20:39:56,256 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) [2021-03-10 20:39:56,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 2053 transitions. [2021-03-10 20:39:56,257 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 2053 transitions. Word has length 26 [2021-03-10 20:39:56,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:56,257 INFO L480 AbstractCegarLoop]: Abstraction has 788 states and 2053 transitions. [2021-03-10 20:39:56,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:56,257 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 2053 transitions. [2021-03-10 20:39:56,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:56,257 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:56,257 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:56,258 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2021-03-10 20:39:56,258 INFO L428 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:56,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:56,258 INFO L82 PathProgramCache]: Analyzing trace with hash -625259506, now seen corresponding path program 326 times [2021-03-10 20:39:56,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:56,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547349795] [2021-03-10 20:39:56,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:56,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:56,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547349795] [2021-03-10 20:39:56,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:56,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:39:56,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139921044] [2021-03-10 20:39:56,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:39:56,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:56,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:39:56,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:56,319 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) [2021-03-10 20:39:56,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:56,457 INFO L93 Difference]: Finished difference Result 919 states and 2353 transitions. [2021-03-10 20:39:56,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:39:56,457 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 [2021-03-10 20:39:56,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:56,458 INFO L225 Difference]: With dead ends: 919 [2021-03-10 20:39:56,458 INFO L226 Difference]: Without dead ends: 826 [2021-03-10 20:39:56,458 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:39:56,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2021-03-10 20:39:56,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 788. [2021-03-10 20:39:56,464 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) [2021-03-10 20:39:56,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 2049 transitions. [2021-03-10 20:39:56,465 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 2049 transitions. Word has length 26 [2021-03-10 20:39:56,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:56,465 INFO L480 AbstractCegarLoop]: Abstraction has 788 states and 2049 transitions. [2021-03-10 20:39:56,465 INFO L481 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) [2021-03-10 20:39:56,465 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 2049 transitions. [2021-03-10 20:39:56,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:56,466 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:56,466 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:56,466 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2021-03-10 20:39:56,466 INFO L428 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:56,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:56,466 INFO L82 PathProgramCache]: Analyzing trace with hash 244185102, now seen corresponding path program 327 times [2021-03-10 20:39:56,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:56,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158124375] [2021-03-10 20:39:56,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:56,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:56,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158124375] [2021-03-10 20:39:56,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:56,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:56,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377512087] [2021-03-10 20:39:56,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:56,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:56,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:56,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:56,528 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) [2021-03-10 20:39:56,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:56,699 INFO L93 Difference]: Finished difference Result 935 states and 2392 transitions. [2021-03-10 20:39:56,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:56,699 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:56,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:56,700 INFO L225 Difference]: With dead ends: 935 [2021-03-10 20:39:56,700 INFO L226 Difference]: Without dead ends: 666 [2021-03-10 20:39:56,700 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:56,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-03-10 20:39:56,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 594. [2021-03-10 20:39:56,705 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) [2021-03-10 20:39:56,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 1515 transitions. [2021-03-10 20:39:56,705 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 1515 transitions. Word has length 26 [2021-03-10 20:39:56,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:56,706 INFO L480 AbstractCegarLoop]: Abstraction has 594 states and 1515 transitions. [2021-03-10 20:39:56,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:56,706 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 1515 transitions. [2021-03-10 20:39:56,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:56,706 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:56,706 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:56,706 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2021-03-10 20:39:56,706 INFO L428 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:56,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:56,706 INFO L82 PathProgramCache]: Analyzing trace with hash 256125006, now seen corresponding path program 328 times [2021-03-10 20:39:56,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:56,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673802315] [2021-03-10 20:39:56,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:56,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:56,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673802315] [2021-03-10 20:39:56,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:56,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:56,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899218400] [2021-03-10 20:39:56,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:56,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:56,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:56,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:56,768 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) [2021-03-10 20:39:56,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:56,947 INFO L93 Difference]: Finished difference Result 734 states and 1848 transitions. [2021-03-10 20:39:56,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:56,947 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 [2021-03-10 20:39:56,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:56,948 INFO L225 Difference]: With dead ends: 734 [2021-03-10 20:39:56,948 INFO L226 Difference]: Without dead ends: 633 [2021-03-10 20:39:56,948 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:56,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-03-10 20:39:56,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 570. [2021-03-10 20:39:56,953 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) [2021-03-10 20:39:56,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1457 transitions. [2021-03-10 20:39:56,953 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1457 transitions. Word has length 26 [2021-03-10 20:39:56,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:56,953 INFO L480 AbstractCegarLoop]: Abstraction has 570 states and 1457 transitions. [2021-03-10 20:39:56,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:56,953 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1457 transitions. [2021-03-10 20:39:56,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:56,954 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:56,954 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:56,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2021-03-10 20:39:56,954 INFO L428 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:56,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:56,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1125569614, now seen corresponding path program 329 times [2021-03-10 20:39:56,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:56,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217396479] [2021-03-10 20:39:56,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:57,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:57,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217396479] [2021-03-10 20:39:57,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:57,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:57,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583729169] [2021-03-10 20:39:57,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:57,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:57,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:57,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:57,018 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) [2021-03-10 20:39:57,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:57,208 INFO L93 Difference]: Finished difference Result 694 states and 1767 transitions. [2021-03-10 20:39:57,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:57,208 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:57,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:57,209 INFO L225 Difference]: With dead ends: 694 [2021-03-10 20:39:57,209 INFO L226 Difference]: Without dead ends: 603 [2021-03-10 20:39:57,209 INFO L775 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 [2021-03-10 20:39:57,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-03-10 20:39:57,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 587. [2021-03-10 20:39:57,214 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) [2021-03-10 20:39:57,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 1499 transitions. [2021-03-10 20:39:57,214 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 1499 transitions. Word has length 26 [2021-03-10 20:39:57,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:57,215 INFO L480 AbstractCegarLoop]: Abstraction has 587 states and 1499 transitions. [2021-03-10 20:39:57,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:57,215 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 1499 transitions. [2021-03-10 20:39:57,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:57,215 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:57,215 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:57,215 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2021-03-10 20:39:57,215 INFO L428 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:57,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:57,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1937772202, now seen corresponding path program 330 times [2021-03-10 20:39:57,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:57,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905710520] [2021-03-10 20:39:57,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:57,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:57,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905710520] [2021-03-10 20:39:57,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:57,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:57,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691376006] [2021-03-10 20:39:57,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:57,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:57,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:57,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:57,278 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) [2021-03-10 20:39:57,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:57,468 INFO L93 Difference]: Finished difference Result 696 states and 1770 transitions. [2021-03-10 20:39:57,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:57,469 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:57,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:57,469 INFO L225 Difference]: With dead ends: 696 [2021-03-10 20:39:57,469 INFO L226 Difference]: Without dead ends: 600 [2021-03-10 20:39:57,469 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:57,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-03-10 20:39:57,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 582. [2021-03-10 20:39:57,474 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) [2021-03-10 20:39:57,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 1485 transitions. [2021-03-10 20:39:57,475 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 1485 transitions. Word has length 26 [2021-03-10 20:39:57,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:57,475 INFO L480 AbstractCegarLoop]: Abstraction has 582 states and 1485 transitions. [2021-03-10 20:39:57,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:57,475 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 1485 transitions. [2021-03-10 20:39:57,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:57,475 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:57,475 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:57,475 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2021-03-10 20:39:57,475 INFO L428 AbstractCegarLoop]: === Iteration 333 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:57,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:57,476 INFO L82 PathProgramCache]: Analyzing trace with hash 908358482, now seen corresponding path program 331 times [2021-03-10 20:39:57,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:57,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477928219] [2021-03-10 20:39:57,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:57,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:57,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477928219] [2021-03-10 20:39:57,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:57,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:57,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482188444] [2021-03-10 20:39:57,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:57,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:57,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:57,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:57,537 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) [2021-03-10 20:39:57,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:57,716 INFO L93 Difference]: Finished difference Result 709 states and 1796 transitions. [2021-03-10 20:39:57,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:57,716 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 [2021-03-10 20:39:57,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:57,717 INFO L225 Difference]: With dead ends: 709 [2021-03-10 20:39:57,717 INFO L226 Difference]: Without dead ends: 586 [2021-03-10 20:39:57,717 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:57,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-03-10 20:39:57,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 570. [2021-03-10 20:39:57,722 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) [2021-03-10 20:39:57,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1454 transitions. [2021-03-10 20:39:57,722 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1454 transitions. Word has length 26 [2021-03-10 20:39:57,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:57,722 INFO L480 AbstractCegarLoop]: Abstraction has 570 states and 1454 transitions. [2021-03-10 20:39:57,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:57,723 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1454 transitions. [2021-03-10 20:39:57,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:57,723 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:57,723 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:57,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2021-03-10 20:39:57,723 INFO L428 AbstractCegarLoop]: === Iteration 334 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:57,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:57,723 INFO L82 PathProgramCache]: Analyzing trace with hash 48042988, now seen corresponding path program 332 times [2021-03-10 20:39:57,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:57,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404575429] [2021-03-10 20:39:57,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:57,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:57,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404575429] [2021-03-10 20:39:57,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:57,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:57,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206795174] [2021-03-10 20:39:57,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:57,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:57,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:57,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:57,792 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) [2021-03-10 20:39:57,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:57,979 INFO L93 Difference]: Finished difference Result 694 states and 1757 transitions. [2021-03-10 20:39:57,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:57,979 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:57,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:57,980 INFO L225 Difference]: With dead ends: 694 [2021-03-10 20:39:57,980 INFO L226 Difference]: Without dead ends: 613 [2021-03-10 20:39:57,980 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:57,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-03-10 20:39:57,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 569. [2021-03-10 20:39:57,985 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) [2021-03-10 20:39:57,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1452 transitions. [2021-03-10 20:39:57,985 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1452 transitions. Word has length 26 [2021-03-10 20:39:57,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:57,985 INFO L480 AbstractCegarLoop]: Abstraction has 569 states and 1452 transitions. [2021-03-10 20:39:57,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:57,985 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1452 transitions. [2021-03-10 20:39:57,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:57,986 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:57,986 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:57,986 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2021-03-10 20:39:57,986 INFO L428 AbstractCegarLoop]: === Iteration 335 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:57,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:57,986 INFO L82 PathProgramCache]: Analyzing trace with hash 917487596, now seen corresponding path program 333 times [2021-03-10 20:39:57,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:57,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815380990] [2021-03-10 20:39:57,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:58,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:58,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815380990] [2021-03-10 20:39:58,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:58,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:58,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944544975] [2021-03-10 20:39:58,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:58,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:58,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:58,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:58,050 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) [2021-03-10 20:39:58,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:58,247 INFO L93 Difference]: Finished difference Result 696 states and 1757 transitions. [2021-03-10 20:39:58,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:58,247 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 [2021-03-10 20:39:58,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:58,248 INFO L225 Difference]: With dead ends: 696 [2021-03-10 20:39:58,248 INFO L226 Difference]: Without dead ends: 605 [2021-03-10 20:39:58,248 INFO L775 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 [2021-03-10 20:39:58,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-03-10 20:39:58,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 576. [2021-03-10 20:39:58,252 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) [2021-03-10 20:39:58,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 1469 transitions. [2021-03-10 20:39:58,253 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 1469 transitions. Word has length 26 [2021-03-10 20:39:58,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:58,253 INFO L480 AbstractCegarLoop]: Abstraction has 576 states and 1469 transitions. [2021-03-10 20:39:58,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:58,253 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 1469 transitions. [2021-03-10 20:39:58,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:58,254 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:58,254 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:58,254 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2021-03-10 20:39:58,254 INFO L428 AbstractCegarLoop]: === Iteration 336 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:58,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:58,254 INFO L82 PathProgramCache]: Analyzing trace with hash -538070062, now seen corresponding path program 334 times [2021-03-10 20:39:58,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:58,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719962282] [2021-03-10 20:39:58,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:58,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:58,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719962282] [2021-03-10 20:39:58,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:58,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:58,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166344993] [2021-03-10 20:39:58,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:58,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:58,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:58,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:58,322 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) [2021-03-10 20:39:58,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:58,511 INFO L93 Difference]: Finished difference Result 692 states and 1748 transitions. [2021-03-10 20:39:58,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:58,512 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:58,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:58,512 INFO L225 Difference]: With dead ends: 692 [2021-03-10 20:39:58,512 INFO L226 Difference]: Without dead ends: 599 [2021-03-10 20:39:58,513 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:58,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-03-10 20:39:58,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 572. [2021-03-10 20:39:58,517 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) [2021-03-10 20:39:58,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 1459 transitions. [2021-03-10 20:39:58,518 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 1459 transitions. Word has length 26 [2021-03-10 20:39:58,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:58,518 INFO L480 AbstractCegarLoop]: Abstraction has 572 states and 1459 transitions. [2021-03-10 20:39:58,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:58,518 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 1459 transitions. [2021-03-10 20:39:58,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:58,518 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:58,518 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:58,518 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2021-03-10 20:39:58,518 INFO L428 AbstractCegarLoop]: === Iteration 337 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:58,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:58,519 INFO L82 PathProgramCache]: Analyzing trace with hash -158764978, now seen corresponding path program 335 times [2021-03-10 20:39:58,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:58,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567369448] [2021-03-10 20:39:58,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:58,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:58,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567369448] [2021-03-10 20:39:58,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:58,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:58,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274526017] [2021-03-10 20:39:58,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:58,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:58,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:58,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:58,583 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) [2021-03-10 20:39:58,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:58,777 INFO L93 Difference]: Finished difference Result 712 states and 1795 transitions. [2021-03-10 20:39:58,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:58,777 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 [2021-03-10 20:39:58,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:58,778 INFO L225 Difference]: With dead ends: 712 [2021-03-10 20:39:58,778 INFO L226 Difference]: Without dead ends: 631 [2021-03-10 20:39:58,778 INFO L775 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 [2021-03-10 20:39:58,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2021-03-10 20:39:58,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 574. [2021-03-10 20:39:58,782 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) [2021-03-10 20:39:58,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 1469 transitions. [2021-03-10 20:39:58,783 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 1469 transitions. Word has length 26 [2021-03-10 20:39:58,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:58,783 INFO L480 AbstractCegarLoop]: Abstraction has 574 states and 1469 transitions. [2021-03-10 20:39:58,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:58,783 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 1469 transitions. [2021-03-10 20:39:58,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:58,784 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:58,784 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:58,784 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2021-03-10 20:39:58,784 INFO L428 AbstractCegarLoop]: === Iteration 338 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:58,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:58,784 INFO L82 PathProgramCache]: Analyzing trace with hash 710679630, now seen corresponding path program 336 times [2021-03-10 20:39:58,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:58,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853020211] [2021-03-10 20:39:58,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:58,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:58,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853020211] [2021-03-10 20:39:58,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:58,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:58,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278032480] [2021-03-10 20:39:58,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:58,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:58,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:58,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:58,849 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) [2021-03-10 20:39:59,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:59,050 INFO L93 Difference]: Finished difference Result 690 states and 1756 transitions. [2021-03-10 20:39:59,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:59,050 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:59,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:59,051 INFO L225 Difference]: With dead ends: 690 [2021-03-10 20:39:59,051 INFO L226 Difference]: Without dead ends: 599 [2021-03-10 20:39:59,051 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:59,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-03-10 20:39:59,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 577. [2021-03-10 20:39:59,056 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) [2021-03-10 20:39:59,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 1475 transitions. [2021-03-10 20:39:59,056 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 1475 transitions. Word has length 26 [2021-03-10 20:39:59,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:59,056 INFO L480 AbstractCegarLoop]: Abstraction has 577 states and 1475 transitions. [2021-03-10 20:39:59,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:59,056 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 1475 transitions. [2021-03-10 20:39:59,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:59,057 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:59,057 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:59,057 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2021-03-10 20:39:59,057 INFO L428 AbstractCegarLoop]: === Iteration 339 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:59,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:59,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1663603796, now seen corresponding path program 337 times [2021-03-10 20:39:59,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:59,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851516997] [2021-03-10 20:39:59,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:59,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:59,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851516997] [2021-03-10 20:39:59,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:59,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:59,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943454589] [2021-03-10 20:39:59,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:59,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:59,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:59,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:59,134 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) [2021-03-10 20:39:59,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:59,317 INFO L93 Difference]: Finished difference Result 686 states and 1730 transitions. [2021-03-10 20:39:59,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:59,318 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:59,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:59,318 INFO L225 Difference]: With dead ends: 686 [2021-03-10 20:39:59,318 INFO L226 Difference]: Without dead ends: 597 [2021-03-10 20:39:59,318 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:59,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-03-10 20:39:59,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 575. [2021-03-10 20:39:59,323 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) [2021-03-10 20:39:59,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1467 transitions. [2021-03-10 20:39:59,323 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1467 transitions. Word has length 26 [2021-03-10 20:39:59,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:59,324 INFO L480 AbstractCegarLoop]: Abstraction has 575 states and 1467 transitions. [2021-03-10 20:39:59,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:59,324 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1467 transitions. [2021-03-10 20:39:59,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:59,324 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:59,324 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:59,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2021-03-10 20:39:59,324 INFO L428 AbstractCegarLoop]: === Iteration 340 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:59,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:59,324 INFO L82 PathProgramCache]: Analyzing trace with hash 456333896, now seen corresponding path program 338 times [2021-03-10 20:39:59,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:59,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717981027] [2021-03-10 20:39:59,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:59,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:59,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717981027] [2021-03-10 20:39:59,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:59,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:59,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768464692] [2021-03-10 20:39:59,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:59,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:59,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:59,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:59,389 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) [2021-03-10 20:39:59,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:59,583 INFO L93 Difference]: Finished difference Result 678 states and 1726 transitions. [2021-03-10 20:39:59,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:59,583 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:59,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:59,584 INFO L225 Difference]: With dead ends: 678 [2021-03-10 20:39:59,584 INFO L226 Difference]: Without dead ends: 582 [2021-03-10 20:39:59,584 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:59,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-03-10 20:39:59,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 570. [2021-03-10 20:39:59,588 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) [2021-03-10 20:39:59,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1455 transitions. [2021-03-10 20:39:59,589 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1455 transitions. Word has length 26 [2021-03-10 20:39:59,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:59,589 INFO L480 AbstractCegarLoop]: Abstraction has 570 states and 1455 transitions. [2021-03-10 20:39:59,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:59,589 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1455 transitions. [2021-03-10 20:39:59,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:59,590 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:59,590 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:59,590 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2021-03-10 20:39:59,590 INFO L428 AbstractCegarLoop]: === Iteration 341 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:59,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:59,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1601393100, now seen corresponding path program 339 times [2021-03-10 20:39:59,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:59,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660134743] [2021-03-10 20:39:59,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:59,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:59,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660134743] [2021-03-10 20:39:59,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:59,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:59,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153991494] [2021-03-10 20:39:59,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:59,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:59,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:59,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:59,655 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) [2021-03-10 20:39:59,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:39:59,849 INFO L93 Difference]: Finished difference Result 701 states and 1771 transitions. [2021-03-10 20:39:59,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:39:59,849 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:39:59,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:39:59,850 INFO L225 Difference]: With dead ends: 701 [2021-03-10 20:39:59,850 INFO L226 Difference]: Without dead ends: 610 [2021-03-10 20:39:59,850 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:59,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-03-10 20:39:59,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 585. [2021-03-10 20:39:59,855 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) [2021-03-10 20:39:59,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1488 transitions. [2021-03-10 20:39:59,855 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1488 transitions. Word has length 26 [2021-03-10 20:39:59,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:39:59,855 INFO L480 AbstractCegarLoop]: Abstraction has 585 states and 1488 transitions. [2021-03-10 20:39:59,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:39:59,855 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1488 transitions. [2021-03-10 20:39:59,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:39:59,856 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:39:59,856 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:39:59,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2021-03-10 20:39:59,856 INFO L428 AbstractCegarLoop]: === Iteration 342 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:39:59,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:39:59,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1301429650, now seen corresponding path program 340 times [2021-03-10 20:39:59,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:39:59,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925588375] [2021-03-10 20:39:59,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:39:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:39:59,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:39:59,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925588375] [2021-03-10 20:39:59,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:39:59,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:39:59,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225160677] [2021-03-10 20:39:59,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:39:59,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:39:59,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:39:59,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:39:59,928 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) [2021-03-10 20:40:00,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:00,124 INFO L93 Difference]: Finished difference Result 693 states and 1757 transitions. [2021-03-10 20:40:00,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:00,125 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:00,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:00,125 INFO L225 Difference]: With dead ends: 693 [2021-03-10 20:40:00,125 INFO L226 Difference]: Without dead ends: 596 [2021-03-10 20:40:00,125 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:00,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-03-10 20:40:00,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 583. [2021-03-10 20:40:00,130 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) [2021-03-10 20:40:00,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1483 transitions. [2021-03-10 20:40:00,131 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1483 transitions. Word has length 26 [2021-03-10 20:40:00,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:00,131 INFO L480 AbstractCegarLoop]: Abstraction has 583 states and 1483 transitions. [2021-03-10 20:40:00,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:00,131 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1483 transitions. [2021-03-10 20:40:00,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:00,131 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:00,131 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:00,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2021-03-10 20:40:00,131 INFO L428 AbstractCegarLoop]: === Iteration 343 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:00,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:00,132 INFO L82 PathProgramCache]: Analyzing trace with hash 392582440, now seen corresponding path program 341 times [2021-03-10 20:40:00,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:00,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319141156] [2021-03-10 20:40:00,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:00,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:00,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319141156] [2021-03-10 20:40:00,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:00,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:00,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390667478] [2021-03-10 20:40:00,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:00,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:00,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:00,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:00,203 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) [2021-03-10 20:40:00,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:00,386 INFO L93 Difference]: Finished difference Result 728 states and 1837 transitions. [2021-03-10 20:40:00,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:00,386 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:00,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:00,387 INFO L225 Difference]: With dead ends: 728 [2021-03-10 20:40:00,387 INFO L226 Difference]: Without dead ends: 613 [2021-03-10 20:40:00,387 INFO L775 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 [2021-03-10 20:40:00,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-03-10 20:40:00,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 583. [2021-03-10 20:40:00,391 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) [2021-03-10 20:40:00,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1475 transitions. [2021-03-10 20:40:00,392 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1475 transitions. Word has length 26 [2021-03-10 20:40:00,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:00,392 INFO L480 AbstractCegarLoop]: Abstraction has 583 states and 1475 transitions. [2021-03-10 20:40:00,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:00,392 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1475 transitions. [2021-03-10 20:40:00,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:00,393 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:00,393 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:00,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2021-03-10 20:40:00,393 INFO L428 AbstractCegarLoop]: === Iteration 344 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:00,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:00,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1632796106, now seen corresponding path program 342 times [2021-03-10 20:40:00,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:00,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881337021] [2021-03-10 20:40:00,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:00,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:00,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881337021] [2021-03-10 20:40:00,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:00,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:00,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306446516] [2021-03-10 20:40:00,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:00,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:00,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:00,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:00,456 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) [2021-03-10 20:40:00,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:00,644 INFO L93 Difference]: Finished difference Result 717 states and 1804 transitions. [2021-03-10 20:40:00,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:00,644 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:00,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:00,645 INFO L225 Difference]: With dead ends: 717 [2021-03-10 20:40:00,645 INFO L226 Difference]: Without dead ends: 626 [2021-03-10 20:40:00,645 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:00,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-03-10 20:40:00,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 583. [2021-03-10 20:40:00,649 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) [2021-03-10 20:40:00,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1475 transitions. [2021-03-10 20:40:00,650 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1475 transitions. Word has length 26 [2021-03-10 20:40:00,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:00,650 INFO L480 AbstractCegarLoop]: Abstraction has 583 states and 1475 transitions. [2021-03-10 20:40:00,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:00,650 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1475 transitions. [2021-03-10 20:40:00,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:00,651 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:00,651 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:00,651 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2021-03-10 20:40:00,651 INFO L428 AbstractCegarLoop]: === Iteration 345 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:00,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:00,651 INFO L82 PathProgramCache]: Analyzing trace with hash 240651560, now seen corresponding path program 343 times [2021-03-10 20:40:00,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:00,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617965088] [2021-03-10 20:40:00,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:00,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617965088] [2021-03-10 20:40:00,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:00,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:00,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124419924] [2021-03-10 20:40:00,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:00,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:00,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:00,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:00,726 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) [2021-03-10 20:40:00,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:00,928 INFO L93 Difference]: Finished difference Result 697 states and 1755 transitions. [2021-03-10 20:40:00,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:00,929 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 [2021-03-10 20:40:00,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:00,930 INFO L225 Difference]: With dead ends: 697 [2021-03-10 20:40:00,930 INFO L226 Difference]: Without dead ends: 590 [2021-03-10 20:40:00,930 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:00,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-03-10 20:40:00,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 566. [2021-03-10 20:40:00,934 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) [2021-03-10 20:40:00,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 1427 transitions. [2021-03-10 20:40:00,935 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 1427 transitions. Word has length 26 [2021-03-10 20:40:00,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:00,935 INFO L480 AbstractCegarLoop]: Abstraction has 566 states and 1427 transitions. [2021-03-10 20:40:00,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:00,935 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 1427 transitions. [2021-03-10 20:40:00,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:00,936 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:00,936 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:00,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2021-03-10 20:40:00,936 INFO L428 AbstractCegarLoop]: === Iteration 346 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:00,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:00,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1693780104, now seen corresponding path program 344 times [2021-03-10 20:40:00,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:00,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982328299] [2021-03-10 20:40:00,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:01,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:01,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982328299] [2021-03-10 20:40:01,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:01,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:01,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110824541] [2021-03-10 20:40:01,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:01,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:01,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:01,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:01,002 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) [2021-03-10 20:40:01,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:01,189 INFO L93 Difference]: Finished difference Result 710 states and 1782 transitions. [2021-03-10 20:40:01,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:01,189 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:01,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:01,190 INFO L225 Difference]: With dead ends: 710 [2021-03-10 20:40:01,190 INFO L226 Difference]: Without dead ends: 593 [2021-03-10 20:40:01,190 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:01,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-03-10 20:40:01,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2021-03-10 20:40:01,194 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) [2021-03-10 20:40:01,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1481 transitions. [2021-03-10 20:40:01,195 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1481 transitions. Word has length 26 [2021-03-10 20:40:01,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:01,195 INFO L480 AbstractCegarLoop]: Abstraction has 593 states and 1481 transitions. [2021-03-10 20:40:01,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:01,195 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1481 transitions. [2021-03-10 20:40:01,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:01,196 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:01,196 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:01,196 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2021-03-10 20:40:01,196 INFO L428 AbstractCegarLoop]: === Iteration 347 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:01,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:01,196 INFO L82 PathProgramCache]: Analyzing trace with hash -881577516, now seen corresponding path program 345 times [2021-03-10 20:40:01,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:01,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848572554] [2021-03-10 20:40:01,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:01,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:01,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848572554] [2021-03-10 20:40:01,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:01,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:01,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456894704] [2021-03-10 20:40:01,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:01,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:01,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:01,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:01,266 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) [2021-03-10 20:40:01,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:01,451 INFO L93 Difference]: Finished difference Result 725 states and 1802 transitions. [2021-03-10 20:40:01,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:01,451 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 [2021-03-10 20:40:01,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:01,452 INFO L225 Difference]: With dead ends: 725 [2021-03-10 20:40:01,452 INFO L226 Difference]: Without dead ends: 603 [2021-03-10 20:40:01,452 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:01,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-03-10 20:40:01,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 593. [2021-03-10 20:40:01,456 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) [2021-03-10 20:40:01,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1478 transitions. [2021-03-10 20:40:01,457 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1478 transitions. Word has length 26 [2021-03-10 20:40:01,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:01,457 INFO L480 AbstractCegarLoop]: Abstraction has 593 states and 1478 transitions. [2021-03-10 20:40:01,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:01,457 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1478 transitions. [2021-03-10 20:40:01,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:01,458 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:01,458 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:01,458 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2021-03-10 20:40:01,458 INFO L428 AbstractCegarLoop]: === Iteration 348 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:01,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:01,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1910991236, now seen corresponding path program 346 times [2021-03-10 20:40:01,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:01,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637982267] [2021-03-10 20:40:01,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:01,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:01,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637982267] [2021-03-10 20:40:01,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:01,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:01,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536765978] [2021-03-10 20:40:01,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:01,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:01,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:01,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:01,522 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) [2021-03-10 20:40:01,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:01,701 INFO L93 Difference]: Finished difference Result 740 states and 1834 transitions. [2021-03-10 20:40:01,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:01,701 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:01,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:01,702 INFO L225 Difference]: With dead ends: 740 [2021-03-10 20:40:01,702 INFO L226 Difference]: Without dead ends: 591 [2021-03-10 20:40:01,702 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:01,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-03-10 20:40:01,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 581. [2021-03-10 20:40:01,706 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) [2021-03-10 20:40:01,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 1442 transitions. [2021-03-10 20:40:01,707 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 1442 transitions. Word has length 26 [2021-03-10 20:40:01,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:01,707 INFO L480 AbstractCegarLoop]: Abstraction has 581 states and 1442 transitions. [2021-03-10 20:40:01,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:01,707 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 1442 transitions. [2021-03-10 20:40:01,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:01,708 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:01,708 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:01,708 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2021-03-10 20:40:01,708 INFO L428 AbstractCegarLoop]: === Iteration 349 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:01,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:01,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1239429736, now seen corresponding path program 347 times [2021-03-10 20:40:01,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:01,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985281185] [2021-03-10 20:40:01,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:01,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:01,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985281185] [2021-03-10 20:40:01,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:01,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:01,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017346325] [2021-03-10 20:40:01,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:01,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:01,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:01,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:01,773 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) [2021-03-10 20:40:01,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:01,989 INFO L93 Difference]: Finished difference Result 702 states and 1738 transitions. [2021-03-10 20:40:01,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:01,989 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 [2021-03-10 20:40:01,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:01,990 INFO L225 Difference]: With dead ends: 702 [2021-03-10 20:40:01,990 INFO L226 Difference]: Without dead ends: 558 [2021-03-10 20:40:01,990 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:01,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-10 20:40:01,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 542. [2021-03-10 20:40:01,994 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) [2021-03-10 20:40:01,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1349 transitions. [2021-03-10 20:40:01,995 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1349 transitions. Word has length 26 [2021-03-10 20:40:01,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:01,995 INFO L480 AbstractCegarLoop]: Abstraction has 542 states and 1349 transitions. [2021-03-10 20:40:01,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:01,995 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1349 transitions. [2021-03-10 20:40:01,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:01,996 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:01,996 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:01,996 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2021-03-10 20:40:01,996 INFO L428 AbstractCegarLoop]: === Iteration 350 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:01,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:01,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1233750690, now seen corresponding path program 348 times [2021-03-10 20:40:01,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:01,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264248469] [2021-03-10 20:40:01,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:02,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:02,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264248469] [2021-03-10 20:40:02,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:02,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:02,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121648267] [2021-03-10 20:40:02,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:02,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:02,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:02,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:02,068 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) [2021-03-10 20:40:02,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:02,271 INFO L93 Difference]: Finished difference Result 644 states and 1595 transitions. [2021-03-10 20:40:02,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:02,272 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:02,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:02,272 INFO L225 Difference]: With dead ends: 644 [2021-03-10 20:40:02,272 INFO L226 Difference]: Without dead ends: 561 [2021-03-10 20:40:02,272 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:02,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-03-10 20:40:02,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 530. [2021-03-10 20:40:02,277 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) [2021-03-10 20:40:02,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1306 transitions. [2021-03-10 20:40:02,277 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1306 transitions. Word has length 26 [2021-03-10 20:40:02,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:02,277 INFO L480 AbstractCegarLoop]: Abstraction has 530 states and 1306 transitions. [2021-03-10 20:40:02,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:02,277 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1306 transitions. [2021-03-10 20:40:02,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:02,278 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:02,278 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:02,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2021-03-10 20:40:02,278 INFO L428 AbstractCegarLoop]: === Iteration 351 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:02,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:02,278 INFO L82 PathProgramCache]: Analyzing trace with hash -364306082, now seen corresponding path program 349 times [2021-03-10 20:40:02,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:02,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530712333] [2021-03-10 20:40:02,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:02,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:02,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530712333] [2021-03-10 20:40:02,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:02,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:02,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91934815] [2021-03-10 20:40:02,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:02,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:02,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:02,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:02,346 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) [2021-03-10 20:40:02,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:02,551 INFO L93 Difference]: Finished difference Result 663 states and 1624 transitions. [2021-03-10 20:40:02,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:02,551 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:02,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:02,552 INFO L225 Difference]: With dead ends: 663 [2021-03-10 20:40:02,552 INFO L226 Difference]: Without dead ends: 572 [2021-03-10 20:40:02,552 INFO L775 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 [2021-03-10 20:40:02,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-03-10 20:40:02,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 536. [2021-03-10 20:40:02,559 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) [2021-03-10 20:40:02,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1315 transitions. [2021-03-10 20:40:02,559 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1315 transitions. Word has length 26 [2021-03-10 20:40:02,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:02,559 INFO L480 AbstractCegarLoop]: Abstraction has 536 states and 1315 transitions. [2021-03-10 20:40:02,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:02,560 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1315 transitions. [2021-03-10 20:40:02,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:02,560 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:02,560 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:02,560 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2021-03-10 20:40:02,560 INFO L428 AbstractCegarLoop]: === Iteration 352 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:02,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:02,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1556377788, now seen corresponding path program 350 times [2021-03-10 20:40:02,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:02,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743834402] [2021-03-10 20:40:02,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:02,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:02,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743834402] [2021-03-10 20:40:02,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:02,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:02,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878978268] [2021-03-10 20:40:02,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:02,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:02,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:02,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:02,638 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) [2021-03-10 20:40:02,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:02,829 INFO L93 Difference]: Finished difference Result 635 states and 1558 transitions. [2021-03-10 20:40:02,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:02,829 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:02,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:02,830 INFO L225 Difference]: With dead ends: 635 [2021-03-10 20:40:02,830 INFO L226 Difference]: Without dead ends: 550 [2021-03-10 20:40:02,830 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:02,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-03-10 20:40:02,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 539. [2021-03-10 20:40:02,834 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) [2021-03-10 20:40:02,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 1320 transitions. [2021-03-10 20:40:02,835 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 1320 transitions. Word has length 26 [2021-03-10 20:40:02,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:02,835 INFO L480 AbstractCegarLoop]: Abstraction has 539 states and 1320 transitions. [2021-03-10 20:40:02,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:02,835 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 1320 transitions. [2021-03-10 20:40:02,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:02,835 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:02,835 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:02,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2021-03-10 20:40:02,835 INFO L428 AbstractCegarLoop]: === Iteration 353 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:02,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:02,835 INFO L82 PathProgramCache]: Analyzing trace with hash -618651816, now seen corresponding path program 351 times [2021-03-10 20:40:02,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:02,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581524023] [2021-03-10 20:40:02,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:02,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:02,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581524023] [2021-03-10 20:40:02,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:02,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:02,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150368054] [2021-03-10 20:40:02,902 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:02,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:02,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:02,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:02,902 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) [2021-03-10 20:40:03,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:03,091 INFO L93 Difference]: Finished difference Result 642 states and 1579 transitions. [2021-03-10 20:40:03,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:03,091 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 [2021-03-10 20:40:03,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:03,092 INFO L225 Difference]: With dead ends: 642 [2021-03-10 20:40:03,092 INFO L226 Difference]: Without dead ends: 546 [2021-03-10 20:40:03,092 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:03,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-03-10 20:40:03,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 536. [2021-03-10 20:40:03,096 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) [2021-03-10 20:40:03,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1314 transitions. [2021-03-10 20:40:03,097 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1314 transitions. Word has length 26 [2021-03-10 20:40:03,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:03,097 INFO L480 AbstractCegarLoop]: Abstraction has 536 states and 1314 transitions. [2021-03-10 20:40:03,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:03,097 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1314 transitions. [2021-03-10 20:40:03,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:03,098 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:03,098 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:03,098 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2021-03-10 20:40:03,098 INFO L428 AbstractCegarLoop]: === Iteration 354 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:03,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:03,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1505935746, now seen corresponding path program 352 times [2021-03-10 20:40:03,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:03,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105282710] [2021-03-10 20:40:03,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:03,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:03,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105282710] [2021-03-10 20:40:03,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:03,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:03,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342831919] [2021-03-10 20:40:03,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:03,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:03,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:03,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:03,163 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) [2021-03-10 20:40:03,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:03,344 INFO L93 Difference]: Finished difference Result 646 states and 1576 transitions. [2021-03-10 20:40:03,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:03,344 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:03,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:03,345 INFO L225 Difference]: With dead ends: 646 [2021-03-10 20:40:03,345 INFO L226 Difference]: Without dead ends: 559 [2021-03-10 20:40:03,345 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:03,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-03-10 20:40:03,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 530. [2021-03-10 20:40:03,349 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) [2021-03-10 20:40:03,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1295 transitions. [2021-03-10 20:40:03,350 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1295 transitions. Word has length 26 [2021-03-10 20:40:03,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:03,350 INFO L480 AbstractCegarLoop]: Abstraction has 530 states and 1295 transitions. [2021-03-10 20:40:03,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:03,350 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1295 transitions. [2021-03-10 20:40:03,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:03,351 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:03,351 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:03,351 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2021-03-10 20:40:03,351 INFO L428 AbstractCegarLoop]: === Iteration 355 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:03,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:03,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1618588484, now seen corresponding path program 353 times [2021-03-10 20:40:03,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:03,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395648018] [2021-03-10 20:40:03,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:03,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:03,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:03,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395648018] [2021-03-10 20:40:03,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:03,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:03,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947778253] [2021-03-10 20:40:03,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:03,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:03,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:03,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:03,423 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) [2021-03-10 20:40:03,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:03,620 INFO L93 Difference]: Finished difference Result 658 states and 1602 transitions. [2021-03-10 20:40:03,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:03,620 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:03,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:03,621 INFO L225 Difference]: With dead ends: 658 [2021-03-10 20:40:03,621 INFO L226 Difference]: Without dead ends: 567 [2021-03-10 20:40:03,621 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:03,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-03-10 20:40:03,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 530. [2021-03-10 20:40:03,625 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) [2021-03-10 20:40:03,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1295 transitions. [2021-03-10 20:40:03,625 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1295 transitions. Word has length 26 [2021-03-10 20:40:03,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:03,626 INFO L480 AbstractCegarLoop]: Abstraction has 530 states and 1295 transitions. [2021-03-10 20:40:03,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:03,626 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1295 transitions. [2021-03-10 20:40:03,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:03,626 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:03,626 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:03,626 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2021-03-10 20:40:03,626 INFO L428 AbstractCegarLoop]: === Iteration 356 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:03,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:03,627 INFO L82 PathProgramCache]: Analyzing trace with hash 226443938, now seen corresponding path program 354 times [2021-03-10 20:40:03,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:03,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232631934] [2021-03-10 20:40:03,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:03,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:03,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232631934] [2021-03-10 20:40:03,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:03,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:03,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470786105] [2021-03-10 20:40:03,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:03,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:03,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:03,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:03,702 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) [2021-03-10 20:40:03,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:03,897 INFO L93 Difference]: Finished difference Result 638 states and 1564 transitions. [2021-03-10 20:40:03,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:03,897 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 [2021-03-10 20:40:03,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:03,898 INFO L225 Difference]: With dead ends: 638 [2021-03-10 20:40:03,898 INFO L226 Difference]: Without dead ends: 541 [2021-03-10 20:40:03,898 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:03,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-03-10 20:40:03,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 528. [2021-03-10 20:40:03,902 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) [2021-03-10 20:40:03,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1290 transitions. [2021-03-10 20:40:03,903 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1290 transitions. Word has length 26 [2021-03-10 20:40:03,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:03,903 INFO L480 AbstractCegarLoop]: Abstraction has 528 states and 1290 transitions. [2021-03-10 20:40:03,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:03,903 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1290 transitions. [2021-03-10 20:40:03,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:03,903 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:03,903 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:03,903 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2021-03-10 20:40:03,903 INFO L428 AbstractCegarLoop]: === Iteration 357 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:03,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:03,903 INFO L82 PathProgramCache]: Analyzing trace with hash 495599698, now seen corresponding path program 355 times [2021-03-10 20:40:03,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:03,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729071035] [2021-03-10 20:40:03,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:03,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:03,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729071035] [2021-03-10 20:40:03,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:03,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:03,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236167689] [2021-03-10 20:40:03,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:03,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:03,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:03,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:03,968 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) [2021-03-10 20:40:04,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:04,153 INFO L93 Difference]: Finished difference Result 621 states and 1513 transitions. [2021-03-10 20:40:04,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:04,154 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 [2021-03-10 20:40:04,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:04,155 INFO L225 Difference]: With dead ends: 621 [2021-03-10 20:40:04,155 INFO L226 Difference]: Without dead ends: 536 [2021-03-10 20:40:04,155 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:04,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-03-10 20:40:04,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 516. [2021-03-10 20:40:04,159 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) [2021-03-10 20:40:04,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1260 transitions. [2021-03-10 20:40:04,159 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1260 transitions. Word has length 26 [2021-03-10 20:40:04,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:04,159 INFO L480 AbstractCegarLoop]: Abstraction has 516 states and 1260 transitions. [2021-03-10 20:40:04,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:04,159 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1260 transitions. [2021-03-10 20:40:04,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:04,160 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:04,160 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:04,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2021-03-10 20:40:04,160 INFO L428 AbstractCegarLoop]: === Iteration 358 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:04,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:04,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1679429906, now seen corresponding path program 356 times [2021-03-10 20:40:04,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:04,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757633337] [2021-03-10 20:40:04,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:04,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:04,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757633337] [2021-03-10 20:40:04,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:04,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:04,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340641387] [2021-03-10 20:40:04,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:04,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:04,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:04,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:04,225 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) [2021-03-10 20:40:04,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:04,415 INFO L93 Difference]: Finished difference Result 643 states and 1566 transitions. [2021-03-10 20:40:04,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:04,416 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:04,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:04,416 INFO L225 Difference]: With dead ends: 643 [2021-03-10 20:40:04,416 INFO L226 Difference]: Without dead ends: 541 [2021-03-10 20:40:04,416 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:04,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-03-10 20:40:04,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 501. [2021-03-10 20:40:04,420 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) [2021-03-10 20:40:04,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 1231 transitions. [2021-03-10 20:40:04,421 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 1231 transitions. Word has length 26 [2021-03-10 20:40:04,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:04,421 INFO L480 AbstractCegarLoop]: Abstraction has 501 states and 1231 transitions. [2021-03-10 20:40:04,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:04,421 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 1231 transitions. [2021-03-10 20:40:04,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:04,421 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:04,421 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:04,421 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2021-03-10 20:40:04,421 INFO L428 AbstractCegarLoop]: === Iteration 359 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:04,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:04,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1763388200, now seen corresponding path program 357 times [2021-03-10 20:40:04,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:04,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112981396] [2021-03-10 20:40:04,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:04,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:04,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112981396] [2021-03-10 20:40:04,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:04,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:04,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866307848] [2021-03-10 20:40:04,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:04,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:04,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:04,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:04,490 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) [2021-03-10 20:40:04,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:04,688 INFO L93 Difference]: Finished difference Result 600 states and 1466 transitions. [2021-03-10 20:40:04,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:04,688 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:04,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:04,689 INFO L225 Difference]: With dead ends: 600 [2021-03-10 20:40:04,689 INFO L226 Difference]: Without dead ends: 459 [2021-03-10 20:40:04,689 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:04,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-03-10 20:40:04,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 419. [2021-03-10 20:40:04,692 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) [2021-03-10 20:40:04,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 1031 transitions. [2021-03-10 20:40:04,693 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 1031 transitions. Word has length 26 [2021-03-10 20:40:04,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:04,693 INFO L480 AbstractCegarLoop]: Abstraction has 419 states and 1031 transitions. [2021-03-10 20:40:04,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:04,693 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 1031 transitions. [2021-03-10 20:40:04,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:04,693 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:04,693 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:04,693 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2021-03-10 20:40:04,693 INFO L428 AbstractCegarLoop]: === Iteration 360 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:04,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:04,693 INFO L82 PathProgramCache]: Analyzing trace with hash 323941484, now seen corresponding path program 358 times [2021-03-10 20:40:04,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:04,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104372656] [2021-03-10 20:40:04,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:04,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:04,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104372656] [2021-03-10 20:40:04,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:04,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:04,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619942020] [2021-03-10 20:40:04,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:04,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:04,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:04,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:04,758 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) [2021-03-10 20:40:04,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:04,939 INFO L93 Difference]: Finished difference Result 544 states and 1325 transitions. [2021-03-10 20:40:04,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:04,943 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:04,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:04,944 INFO L225 Difference]: With dead ends: 544 [2021-03-10 20:40:04,944 INFO L226 Difference]: Without dead ends: 423 [2021-03-10 20:40:04,944 INFO L775 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 [2021-03-10 20:40:04,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-03-10 20:40:04,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 419. [2021-03-10 20:40:04,947 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) [2021-03-10 20:40:04,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 1021 transitions. [2021-03-10 20:40:04,948 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 1021 transitions. Word has length 26 [2021-03-10 20:40:04,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:04,948 INFO L480 AbstractCegarLoop]: Abstraction has 419 states and 1021 transitions. [2021-03-10 20:40:04,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:04,948 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 1021 transitions. [2021-03-10 20:40:04,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:04,948 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:04,948 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:04,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2021-03-10 20:40:04,948 INFO L428 AbstractCegarLoop]: === Iteration 361 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:04,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:04,948 INFO L82 PathProgramCache]: Analyzing trace with hash 2082614990, now seen corresponding path program 359 times [2021-03-10 20:40:04,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:04,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337240608] [2021-03-10 20:40:04,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:05,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:05,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337240608] [2021-03-10 20:40:05,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:05,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:05,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782269255] [2021-03-10 20:40:05,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:05,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:05,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:05,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:05,019 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) [2021-03-10 20:40:05,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:05,200 INFO L93 Difference]: Finished difference Result 545 states and 1321 transitions. [2021-03-10 20:40:05,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:05,200 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:05,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:05,200 INFO L225 Difference]: With dead ends: 545 [2021-03-10 20:40:05,200 INFO L226 Difference]: Without dead ends: 429 [2021-03-10 20:40:05,201 INFO L775 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 [2021-03-10 20:40:05,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-03-10 20:40:05,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 423. [2021-03-10 20:40:05,204 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) [2021-03-10 20:40:05,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 1028 transitions. [2021-03-10 20:40:05,204 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 1028 transitions. Word has length 26 [2021-03-10 20:40:05,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:05,204 INFO L480 AbstractCegarLoop]: Abstraction has 423 states and 1028 transitions. [2021-03-10 20:40:05,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:05,205 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 1028 transitions. [2021-03-10 20:40:05,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:05,205 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:05,205 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:05,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2021-03-10 20:40:05,205 INFO L428 AbstractCegarLoop]: === Iteration 362 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:05,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:05,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1483348368, now seen corresponding path program 360 times [2021-03-10 20:40:05,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:05,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444345106] [2021-03-10 20:40:05,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:05,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:05,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444345106] [2021-03-10 20:40:05,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:05,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:05,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658727553] [2021-03-10 20:40:05,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:05,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:05,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:05,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:05,270 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) [2021-03-10 20:40:05,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:05,453 INFO L93 Difference]: Finished difference Result 536 states and 1302 transitions. [2021-03-10 20:40:05,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:05,454 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:05,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:05,454 INFO L225 Difference]: With dead ends: 536 [2021-03-10 20:40:05,454 INFO L226 Difference]: Without dead ends: 417 [2021-03-10 20:40:05,454 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:05,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-03-10 20:40:05,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 409. [2021-03-10 20:40:05,458 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) [2021-03-10 20:40:05,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 1001 transitions. [2021-03-10 20:40:05,458 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 1001 transitions. Word has length 26 [2021-03-10 20:40:05,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:05,458 INFO L480 AbstractCegarLoop]: Abstraction has 409 states and 1001 transitions. [2021-03-10 20:40:05,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:05,458 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 1001 transitions. [2021-03-10 20:40:05,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:05,458 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:05,459 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:05,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2021-03-10 20:40:05,459 INFO L428 AbstractCegarLoop]: === Iteration 363 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:05,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:05,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1622263662, now seen corresponding path program 361 times [2021-03-10 20:40:05,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:05,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650627124] [2021-03-10 20:40:05,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:05,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:05,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650627124] [2021-03-10 20:40:05,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:05,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:40:05,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547053060] [2021-03-10 20:40:05,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:40:05,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:05,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:40:05,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:40:05,520 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) [2021-03-10 20:40:05,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:05,662 INFO L93 Difference]: Finished difference Result 541 states and 1317 transitions. [2021-03-10 20:40:05,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:40:05,662 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 [2021-03-10 20:40:05,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:05,663 INFO L225 Difference]: With dead ends: 541 [2021-03-10 20:40:05,663 INFO L226 Difference]: Without dead ends: 430 [2021-03-10 20:40:05,663 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:40:05,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-03-10 20:40:05,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 426. [2021-03-10 20:40:05,666 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) [2021-03-10 20:40:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1032 transitions. [2021-03-10 20:40:05,667 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1032 transitions. Word has length 26 [2021-03-10 20:40:05,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:05,667 INFO L480 AbstractCegarLoop]: Abstraction has 426 states and 1032 transitions. [2021-03-10 20:40:05,667 INFO L481 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) [2021-03-10 20:40:05,667 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1032 transitions. [2021-03-10 20:40:05,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:05,667 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:05,667 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:05,667 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2021-03-10 20:40:05,667 INFO L428 AbstractCegarLoop]: === Iteration 364 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:05,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:05,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1764452498, now seen corresponding path program 362 times [2021-03-10 20:40:05,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:05,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347081334] [2021-03-10 20:40:05,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:05,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:05,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347081334] [2021-03-10 20:40:05,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:05,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:40:05,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112914463] [2021-03-10 20:40:05,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:40:05,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:05,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:40:05,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:40:05,722 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) [2021-03-10 20:40:05,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:05,862 INFO L93 Difference]: Finished difference Result 544 states and 1316 transitions. [2021-03-10 20:40:05,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:40:05,863 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 [2021-03-10 20:40:05,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:05,863 INFO L225 Difference]: With dead ends: 544 [2021-03-10 20:40:05,863 INFO L226 Difference]: Without dead ends: 444 [2021-03-10 20:40:05,863 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:40:05,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-03-10 20:40:05,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 431. [2021-03-10 20:40:05,867 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) [2021-03-10 20:40:05,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 1043 transitions. [2021-03-10 20:40:05,867 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 1043 transitions. Word has length 26 [2021-03-10 20:40:05,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:05,867 INFO L480 AbstractCegarLoop]: Abstraction has 431 states and 1043 transitions. [2021-03-10 20:40:05,867 INFO L481 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) [2021-03-10 20:40:05,867 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 1043 transitions. [2021-03-10 20:40:05,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:05,868 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:05,868 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:05,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2021-03-10 20:40:05,868 INFO L428 AbstractCegarLoop]: === Iteration 365 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:05,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:05,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1609938832, now seen corresponding path program 363 times [2021-03-10 20:40:05,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:05,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756372615] [2021-03-10 20:40:05,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:05,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756372615] [2021-03-10 20:40:05,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:05,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:40:05,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220143510] [2021-03-10 20:40:05,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:40:05,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:05,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:40:05,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:40:05,926 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) [2021-03-10 20:40:06,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:06,069 INFO L93 Difference]: Finished difference Result 539 states and 1307 transitions. [2021-03-10 20:40:06,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:40:06,069 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 [2021-03-10 20:40:06,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:06,070 INFO L225 Difference]: With dead ends: 539 [2021-03-10 20:40:06,070 INFO L226 Difference]: Without dead ends: 431 [2021-03-10 20:40:06,070 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:40:06,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-03-10 20:40:06,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 414. [2021-03-10 20:40:06,073 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) [2021-03-10 20:40:06,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 1010 transitions. [2021-03-10 20:40:06,074 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 1010 transitions. Word has length 26 [2021-03-10 20:40:06,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:06,074 INFO L480 AbstractCegarLoop]: Abstraction has 414 states and 1010 transitions. [2021-03-10 20:40:06,074 INFO L481 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) [2021-03-10 20:40:06,074 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 1010 transitions. [2021-03-10 20:40:06,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:06,074 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:06,074 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:06,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2021-03-10 20:40:06,074 INFO L428 AbstractCegarLoop]: === Iteration 366 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:06,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:06,074 INFO L82 PathProgramCache]: Analyzing trace with hash 2058833742, now seen corresponding path program 364 times [2021-03-10 20:40:06,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:06,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541125628] [2021-03-10 20:40:06,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:06,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541125628] [2021-03-10 20:40:06,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:06,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:06,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794791601] [2021-03-10 20:40:06,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:06,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:06,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:06,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:06,149 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) [2021-03-10 20:40:06,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:06,332 INFO L93 Difference]: Finished difference Result 552 states and 1354 transitions. [2021-03-10 20:40:06,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:06,333 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:06,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:06,333 INFO L225 Difference]: With dead ends: 552 [2021-03-10 20:40:06,333 INFO L226 Difference]: Without dead ends: 447 [2021-03-10 20:40:06,334 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:06,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-03-10 20:40:06,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 426. [2021-03-10 20:40:06,337 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) [2021-03-10 20:40:06,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1049 transitions. [2021-03-10 20:40:06,337 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1049 transitions. Word has length 26 [2021-03-10 20:40:06,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:06,337 INFO L480 AbstractCegarLoop]: Abstraction has 426 states and 1049 transitions. [2021-03-10 20:40:06,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:06,338 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1049 transitions. [2021-03-10 20:40:06,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:06,338 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:06,338 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:06,338 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2021-03-10 20:40:06,338 INFO L428 AbstractCegarLoop]: === Iteration 367 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:06,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:06,338 INFO L82 PathProgramCache]: Analyzing trace with hash -331419052, now seen corresponding path program 365 times [2021-03-10 20:40:06,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:06,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129138747] [2021-03-10 20:40:06,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:06,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:06,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129138747] [2021-03-10 20:40:06,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:06,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:06,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932095474] [2021-03-10 20:40:06,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:06,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:06,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:06,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:06,402 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) [2021-03-10 20:40:06,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:06,581 INFO L93 Difference]: Finished difference Result 587 states and 1441 transitions. [2021-03-10 20:40:06,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:06,581 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:06,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:06,582 INFO L225 Difference]: With dead ends: 587 [2021-03-10 20:40:06,582 INFO L226 Difference]: Without dead ends: 454 [2021-03-10 20:40:06,582 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:06,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-03-10 20:40:06,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 438. [2021-03-10 20:40:06,585 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) [2021-03-10 20:40:06,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1076 transitions. [2021-03-10 20:40:06,586 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1076 transitions. Word has length 26 [2021-03-10 20:40:06,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:06,586 INFO L480 AbstractCegarLoop]: Abstraction has 438 states and 1076 transitions. [2021-03-10 20:40:06,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:06,586 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1076 transitions. [2021-03-10 20:40:06,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:06,586 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:06,586 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:06,586 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2021-03-10 20:40:06,586 INFO L428 AbstractCegarLoop]: === Iteration 368 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:06,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:06,586 INFO L82 PathProgramCache]: Analyzing trace with hash -2118876052, now seen corresponding path program 366 times [2021-03-10 20:40:06,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:06,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84924777] [2021-03-10 20:40:06,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:06,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:06,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84924777] [2021-03-10 20:40:06,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:06,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:06,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139420893] [2021-03-10 20:40:06,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:06,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:06,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:06,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:06,651 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) [2021-03-10 20:40:06,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:06,836 INFO L93 Difference]: Finished difference Result 557 states and 1384 transitions. [2021-03-10 20:40:06,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:06,837 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:06,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:06,837 INFO L225 Difference]: With dead ends: 557 [2021-03-10 20:40:06,837 INFO L226 Difference]: Without dead ends: 460 [2021-03-10 20:40:06,837 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:06,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-03-10 20:40:06,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 443. [2021-03-10 20:40:06,841 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) [2021-03-10 20:40:06,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 1091 transitions. [2021-03-10 20:40:06,841 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 1091 transitions. Word has length 26 [2021-03-10 20:40:06,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:06,841 INFO L480 AbstractCegarLoop]: Abstraction has 443 states and 1091 transitions. [2021-03-10 20:40:06,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:06,842 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 1091 transitions. [2021-03-10 20:40:06,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:06,842 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:06,842 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:06,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2021-03-10 20:40:06,842 INFO L428 AbstractCegarLoop]: === Iteration 369 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:06,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:06,842 INFO L82 PathProgramCache]: Analyzing trace with hash 607162702, now seen corresponding path program 367 times [2021-03-10 20:40:06,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:06,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617168528] [2021-03-10 20:40:06,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:06,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:06,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617168528] [2021-03-10 20:40:06,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:06,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:06,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262658023] [2021-03-10 20:40:06,906 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:06,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:06,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:06,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:06,907 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) [2021-03-10 20:40:07,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:07,081 INFO L93 Difference]: Finished difference Result 553 states and 1364 transitions. [2021-03-10 20:40:07,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:07,082 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 [2021-03-10 20:40:07,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:07,082 INFO L225 Difference]: With dead ends: 553 [2021-03-10 20:40:07,082 INFO L226 Difference]: Without dead ends: 448 [2021-03-10 20:40:07,082 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:07,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-03-10 20:40:07,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 426. [2021-03-10 20:40:07,086 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) [2021-03-10 20:40:07,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1039 transitions. [2021-03-10 20:40:07,086 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1039 transitions. Word has length 26 [2021-03-10 20:40:07,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:07,086 INFO L480 AbstractCegarLoop]: Abstraction has 426 states and 1039 transitions. [2021-03-10 20:40:07,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:07,086 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1039 transitions. [2021-03-10 20:40:07,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:07,087 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:07,087 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:07,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2021-03-10 20:40:07,087 INFO L428 AbstractCegarLoop]: === Iteration 370 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:07,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:07,087 INFO L82 PathProgramCache]: Analyzing trace with hash 860847822, now seen corresponding path program 368 times [2021-03-10 20:40:07,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:07,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77816919] [2021-03-10 20:40:07,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:07,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:07,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77816919] [2021-03-10 20:40:07,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:07,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:07,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773891106] [2021-03-10 20:40:07,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:07,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:07,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:07,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:07,152 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) [2021-03-10 20:40:07,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:07,330 INFO L93 Difference]: Finished difference Result 558 states and 1354 transitions. [2021-03-10 20:40:07,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:07,330 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:07,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:07,330 INFO L225 Difference]: With dead ends: 558 [2021-03-10 20:40:07,330 INFO L226 Difference]: Without dead ends: 451 [2021-03-10 20:40:07,331 INFO L775 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 [2021-03-10 20:40:07,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-03-10 20:40:07,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 436. [2021-03-10 20:40:07,334 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) [2021-03-10 20:40:07,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1061 transitions. [2021-03-10 20:40:07,334 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1061 transitions. Word has length 26 [2021-03-10 20:40:07,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:07,335 INFO L480 AbstractCegarLoop]: Abstraction has 436 states and 1061 transitions. [2021-03-10 20:40:07,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:07,335 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1061 transitions. [2021-03-10 20:40:07,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:07,335 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:07,335 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:07,335 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2021-03-10 20:40:07,335 INFO L428 AbstractCegarLoop]: === Iteration 371 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:07,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:07,335 INFO L82 PathProgramCache]: Analyzing trace with hash 261581200, now seen corresponding path program 369 times [2021-03-10 20:40:07,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:07,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896365882] [2021-03-10 20:40:07,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:07,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:07,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896365882] [2021-03-10 20:40:07,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:07,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:07,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896897064] [2021-03-10 20:40:07,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:07,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:07,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:07,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:07,400 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) [2021-03-10 20:40:07,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:07,580 INFO L93 Difference]: Finished difference Result 542 states and 1322 transitions. [2021-03-10 20:40:07,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:07,580 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:07,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:07,581 INFO L225 Difference]: With dead ends: 542 [2021-03-10 20:40:07,581 INFO L226 Difference]: Without dead ends: 443 [2021-03-10 20:40:07,581 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:07,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-03-10 20:40:07,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 438. [2021-03-10 20:40:07,584 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) [2021-03-10 20:40:07,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1066 transitions. [2021-03-10 20:40:07,585 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1066 transitions. Word has length 26 [2021-03-10 20:40:07,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:07,585 INFO L480 AbstractCegarLoop]: Abstraction has 438 states and 1066 transitions. [2021-03-10 20:40:07,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:07,585 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1066 transitions. [2021-03-10 20:40:07,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:07,585 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:07,585 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:07,585 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2021-03-10 20:40:07,585 INFO L428 AbstractCegarLoop]: === Iteration 372 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:07,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:07,586 INFO L82 PathProgramCache]: Analyzing trace with hash 654039856, now seen corresponding path program 370 times [2021-03-10 20:40:07,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:07,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906216413] [2021-03-10 20:40:07,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:07,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:07,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906216413] [2021-03-10 20:40:07,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:07,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:07,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121460533] [2021-03-10 20:40:07,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:07,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:07,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:07,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:07,651 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) [2021-03-10 20:40:07,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:07,830 INFO L93 Difference]: Finished difference Result 571 states and 1384 transitions. [2021-03-10 20:40:07,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:07,830 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 [2021-03-10 20:40:07,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:07,830 INFO L225 Difference]: With dead ends: 571 [2021-03-10 20:40:07,831 INFO L226 Difference]: Without dead ends: 461 [2021-03-10 20:40:07,831 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:07,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-03-10 20:40:07,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 445. [2021-03-10 20:40:07,834 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) [2021-03-10 20:40:07,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1082 transitions. [2021-03-10 20:40:07,835 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1082 transitions. Word has length 26 [2021-03-10 20:40:07,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:07,835 INFO L480 AbstractCegarLoop]: Abstraction has 445 states and 1082 transitions. [2021-03-10 20:40:07,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:07,835 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1082 transitions. [2021-03-10 20:40:07,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:07,835 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:07,835 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:07,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2021-03-10 20:40:07,835 INFO L428 AbstractCegarLoop]: === Iteration 373 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:07,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:07,836 INFO L82 PathProgramCache]: Analyzing trace with hash -850798962, now seen corresponding path program 371 times [2021-03-10 20:40:07,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:07,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223726418] [2021-03-10 20:40:07,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:07,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:07,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223726418] [2021-03-10 20:40:07,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:07,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:07,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503985000] [2021-03-10 20:40:07,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:07,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:07,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:07,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:07,901 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) [2021-03-10 20:40:08,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:08,079 INFO L93 Difference]: Finished difference Result 570 states and 1380 transitions. [2021-03-10 20:40:08,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:08,080 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:08,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:08,080 INFO L225 Difference]: With dead ends: 570 [2021-03-10 20:40:08,080 INFO L226 Difference]: Without dead ends: 468 [2021-03-10 20:40:08,080 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:08,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-03-10 20:40:08,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 452. [2021-03-10 20:40:08,084 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) [2021-03-10 20:40:08,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1097 transitions. [2021-03-10 20:40:08,084 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1097 transitions. Word has length 26 [2021-03-10 20:40:08,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:08,084 INFO L480 AbstractCegarLoop]: Abstraction has 452 states and 1097 transitions. [2021-03-10 20:40:08,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:08,084 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1097 transitions. [2021-03-10 20:40:08,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:08,085 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:08,085 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:08,085 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2021-03-10 20:40:08,085 INFO L428 AbstractCegarLoop]: === Iteration 374 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:08,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:08,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1773999346, now seen corresponding path program 372 times [2021-03-10 20:40:08,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:08,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755957382] [2021-03-10 20:40:08,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:08,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:08,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755957382] [2021-03-10 20:40:08,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:08,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:08,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036927839] [2021-03-10 20:40:08,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:08,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:08,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:08,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:08,150 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) [2021-03-10 20:40:08,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:08,338 INFO L93 Difference]: Finished difference Result 564 states and 1379 transitions. [2021-03-10 20:40:08,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:08,338 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 [2021-03-10 20:40:08,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:08,339 INFO L225 Difference]: With dead ends: 564 [2021-03-10 20:40:08,339 INFO L226 Difference]: Without dead ends: 467 [2021-03-10 20:40:08,339 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:08,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-03-10 20:40:08,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 457. [2021-03-10 20:40:08,342 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) [2021-03-10 20:40:08,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 1112 transitions. [2021-03-10 20:40:08,343 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 1112 transitions. Word has length 26 [2021-03-10 20:40:08,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:08,343 INFO L480 AbstractCegarLoop]: Abstraction has 457 states and 1112 transitions. [2021-03-10 20:40:08,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:08,343 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 1112 transitions. [2021-03-10 20:40:08,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:08,343 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:08,344 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:08,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2021-03-10 20:40:08,344 INFO L428 AbstractCegarLoop]: === Iteration 375 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:08,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:08,344 INFO L82 PathProgramCache]: Analyzing trace with hash 381854800, now seen corresponding path program 373 times [2021-03-10 20:40:08,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:08,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026607030] [2021-03-10 20:40:08,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:08,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:08,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026607030] [2021-03-10 20:40:08,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:08,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:08,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361546025] [2021-03-10 20:40:08,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:08,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:08,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:08,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:08,409 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) [2021-03-10 20:40:08,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:08,582 INFO L93 Difference]: Finished difference Result 564 states and 1377 transitions. [2021-03-10 20:40:08,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:08,583 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:08,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:08,583 INFO L225 Difference]: With dead ends: 564 [2021-03-10 20:40:08,583 INFO L226 Difference]: Without dead ends: 460 [2021-03-10 20:40:08,584 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:08,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-03-10 20:40:08,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 445. [2021-03-10 20:40:08,587 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) [2021-03-10 20:40:08,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1081 transitions. [2021-03-10 20:40:08,588 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1081 transitions. Word has length 26 [2021-03-10 20:40:08,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:08,588 INFO L480 AbstractCegarLoop]: Abstraction has 445 states and 1081 transitions. [2021-03-10 20:40:08,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:08,588 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1081 transitions. [2021-03-10 20:40:08,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:08,588 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:08,588 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:08,588 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2021-03-10 20:40:08,588 INFO L428 AbstractCegarLoop]: === Iteration 376 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:08,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:08,589 INFO L82 PathProgramCache]: Analyzing trace with hash 558338404, now seen corresponding path program 374 times [2021-03-10 20:40:08,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:08,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162906430] [2021-03-10 20:40:08,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:08,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:08,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162906430] [2021-03-10 20:40:08,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:08,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:08,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367650444] [2021-03-10 20:40:08,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:08,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:08,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:08,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:08,652 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) [2021-03-10 20:40:08,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:08,833 INFO L93 Difference]: Finished difference Result 598 states and 1453 transitions. [2021-03-10 20:40:08,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:08,834 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 [2021-03-10 20:40:08,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:08,834 INFO L225 Difference]: With dead ends: 598 [2021-03-10 20:40:08,834 INFO L226 Difference]: Without dead ends: 471 [2021-03-10 20:40:08,834 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:08,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-03-10 20:40:08,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 445. [2021-03-10 20:40:08,838 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) [2021-03-10 20:40:08,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1077 transitions. [2021-03-10 20:40:08,838 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1077 transitions. Word has length 26 [2021-03-10 20:40:08,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:08,838 INFO L480 AbstractCegarLoop]: Abstraction has 445 states and 1077 transitions. [2021-03-10 20:40:08,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:08,838 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1077 transitions. [2021-03-10 20:40:08,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:08,839 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:08,839 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:08,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2021-03-10 20:40:08,839 INFO L428 AbstractCegarLoop]: === Iteration 377 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:08,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:08,839 INFO L82 PathProgramCache]: Analyzing trace with hash 675595906, now seen corresponding path program 375 times [2021-03-10 20:40:08,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:08,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168385434] [2021-03-10 20:40:08,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:08,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168385434] [2021-03-10 20:40:08,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:08,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:08,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189150477] [2021-03-10 20:40:08,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:08,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:08,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:08,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:08,904 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) [2021-03-10 20:40:09,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:09,091 INFO L93 Difference]: Finished difference Result 583 states and 1427 transitions. [2021-03-10 20:40:09,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:09,091 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 [2021-03-10 20:40:09,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:09,092 INFO L225 Difference]: With dead ends: 583 [2021-03-10 20:40:09,092 INFO L226 Difference]: Without dead ends: 464 [2021-03-10 20:40:09,092 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:09,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-03-10 20:40:09,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 450. [2021-03-10 20:40:09,095 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) [2021-03-10 20:40:09,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1092 transitions. [2021-03-10 20:40:09,096 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1092 transitions. Word has length 26 [2021-03-10 20:40:09,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:09,096 INFO L480 AbstractCegarLoop]: Abstraction has 450 states and 1092 transitions. [2021-03-10 20:40:09,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:09,096 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1092 transitions. [2021-03-10 20:40:09,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:09,096 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:09,097 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:09,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2021-03-10 20:40:09,097 INFO L428 AbstractCegarLoop]: === Iteration 378 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:09,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:09,097 INFO L82 PathProgramCache]: Analyzing trace with hash -893332636, now seen corresponding path program 376 times [2021-03-10 20:40:09,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:09,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101987611] [2021-03-10 20:40:09,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:09,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:09,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101987611] [2021-03-10 20:40:09,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:09,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:09,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857718878] [2021-03-10 20:40:09,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:09,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:09,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:09,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:09,170 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) [2021-03-10 20:40:09,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:09,349 INFO L93 Difference]: Finished difference Result 599 states and 1449 transitions. [2021-03-10 20:40:09,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:09,350 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:09,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:09,350 INFO L225 Difference]: With dead ends: 599 [2021-03-10 20:40:09,350 INFO L226 Difference]: Without dead ends: 472 [2021-03-10 20:40:09,350 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:09,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-03-10 20:40:09,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 450. [2021-03-10 20:40:09,354 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) [2021-03-10 20:40:09,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1072 transitions. [2021-03-10 20:40:09,355 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1072 transitions. Word has length 26 [2021-03-10 20:40:09,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:09,355 INFO L480 AbstractCegarLoop]: Abstraction has 450 states and 1072 transitions. [2021-03-10 20:40:09,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:09,355 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1072 transitions. [2021-03-10 20:40:09,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:09,355 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:09,355 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:09,355 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2021-03-10 20:40:09,355 INFO L428 AbstractCegarLoop]: === Iteration 379 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:09,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:09,355 INFO L82 PathProgramCache]: Analyzing trace with hash -700651216, now seen corresponding path program 377 times [2021-03-10 20:40:09,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:09,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772033437] [2021-03-10 20:40:09,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:09,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:09,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772033437] [2021-03-10 20:40:09,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:09,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:09,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312467688] [2021-03-10 20:40:09,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:09,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:09,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:09,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:09,420 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) [2021-03-10 20:40:09,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:09,588 INFO L93 Difference]: Finished difference Result 553 states and 1321 transitions. [2021-03-10 20:40:09,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:09,589 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:09,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:09,589 INFO L225 Difference]: With dead ends: 553 [2021-03-10 20:40:09,589 INFO L226 Difference]: Without dead ends: 420 [2021-03-10 20:40:09,589 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:09,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-03-10 20:40:09,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 403. [2021-03-10 20:40:09,593 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) [2021-03-10 20:40:09,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 960 transitions. [2021-03-10 20:40:09,593 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 960 transitions. Word has length 26 [2021-03-10 20:40:09,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:09,593 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 960 transitions. [2021-03-10 20:40:09,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:09,593 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 960 transitions. [2021-03-10 20:40:09,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:09,594 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:09,594 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:09,594 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2021-03-10 20:40:09,594 INFO L428 AbstractCegarLoop]: === Iteration 380 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:09,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:09,594 INFO L82 PathProgramCache]: Analyzing trace with hash 25600402, now seen corresponding path program 378 times [2021-03-10 20:40:09,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:09,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180264913] [2021-03-10 20:40:09,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:09,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:09,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180264913] [2021-03-10 20:40:09,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:09,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:40:09,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636354595] [2021-03-10 20:40:09,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:40:09,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:09,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:40:09,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:40:09,658 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) [2021-03-10 20:40:09,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:09,806 INFO L93 Difference]: Finished difference Result 542 states and 1283 transitions. [2021-03-10 20:40:09,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:40:09,807 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 [2021-03-10 20:40:09,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:09,807 INFO L225 Difference]: With dead ends: 542 [2021-03-10 20:40:09,807 INFO L226 Difference]: Without dead ends: 426 [2021-03-10 20:40:09,807 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:40:09,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-03-10 20:40:09,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 413. [2021-03-10 20:40:09,811 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) [2021-03-10 20:40:09,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 974 transitions. [2021-03-10 20:40:09,811 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 974 transitions. Word has length 26 [2021-03-10 20:40:09,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:09,811 INFO L480 AbstractCegarLoop]: Abstraction has 413 states and 974 transitions. [2021-03-10 20:40:09,811 INFO L481 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) [2021-03-10 20:40:09,811 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 974 transitions. [2021-03-10 20:40:09,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:09,812 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:09,812 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:09,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2021-03-10 20:40:09,812 INFO L428 AbstractCegarLoop]: === Iteration 381 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:09,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:09,812 INFO L82 PathProgramCache]: Analyzing trace with hash -573666220, now seen corresponding path program 379 times [2021-03-10 20:40:09,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:09,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163042849] [2021-03-10 20:40:09,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:09,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:09,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163042849] [2021-03-10 20:40:09,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:09,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:09,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646686863] [2021-03-10 20:40:09,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:09,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:09,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:09,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:09,883 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) [2021-03-10 20:40:10,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:10,065 INFO L93 Difference]: Finished difference Result 537 states and 1263 transitions. [2021-03-10 20:40:10,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:10,066 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:10,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:10,066 INFO L225 Difference]: With dead ends: 537 [2021-03-10 20:40:10,066 INFO L226 Difference]: Without dead ends: 418 [2021-03-10 20:40:10,066 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:10,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-03-10 20:40:10,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 403. [2021-03-10 20:40:10,070 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) [2021-03-10 20:40:10,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 952 transitions. [2021-03-10 20:40:10,070 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 952 transitions. Word has length 26 [2021-03-10 20:40:10,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:10,070 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 952 transitions. [2021-03-10 20:40:10,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:10,070 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 952 transitions. [2021-03-10 20:40:10,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:10,071 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:10,071 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:10,071 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2021-03-10 20:40:10,071 INFO L428 AbstractCegarLoop]: === Iteration 382 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:10,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:10,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1455837904, now seen corresponding path program 380 times [2021-03-10 20:40:10,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:10,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931266836] [2021-03-10 20:40:10,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:10,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:10,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931266836] [2021-03-10 20:40:10,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:10,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:10,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640351894] [2021-03-10 20:40:10,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:10,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:10,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:10,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:10,151 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) [2021-03-10 20:40:10,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:10,335 INFO L93 Difference]: Finished difference Result 526 states and 1249 transitions. [2021-03-10 20:40:10,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:10,336 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:10,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:10,336 INFO L225 Difference]: With dead ends: 526 [2021-03-10 20:40:10,336 INFO L226 Difference]: Without dead ends: 416 [2021-03-10 20:40:10,337 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:10,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-03-10 20:40:10,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 401. [2021-03-10 20:40:10,340 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) [2021-03-10 20:40:10,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 946 transitions. [2021-03-10 20:40:10,340 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 946 transitions. Word has length 26 [2021-03-10 20:40:10,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:10,340 INFO L480 AbstractCegarLoop]: Abstraction has 401 states and 946 transitions. [2021-03-10 20:40:10,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:10,340 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 946 transitions. [2021-03-10 20:40:10,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:10,341 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:10,341 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:10,341 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2021-03-10 20:40:10,341 INFO L428 AbstractCegarLoop]: === Iteration 383 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:10,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:10,341 INFO L82 PathProgramCache]: Analyzing trace with hash -2055104526, now seen corresponding path program 381 times [2021-03-10 20:40:10,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:10,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165507189] [2021-03-10 20:40:10,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:10,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:10,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165507189] [2021-03-10 20:40:10,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:10,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:10,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702045908] [2021-03-10 20:40:10,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:10,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:10,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:10,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:10,420 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) [2021-03-10 20:40:10,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:10,630 INFO L93 Difference]: Finished difference Result 506 states and 1204 transitions. [2021-03-10 20:40:10,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:10,634 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:10,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:10,635 INFO L225 Difference]: With dead ends: 506 [2021-03-10 20:40:10,635 INFO L226 Difference]: Without dead ends: 407 [2021-03-10 20:40:10,635 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:10,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-03-10 20:40:10,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 401. [2021-03-10 20:40:10,638 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) [2021-03-10 20:40:10,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 945 transitions. [2021-03-10 20:40:10,638 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 945 transitions. Word has length 26 [2021-03-10 20:40:10,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:10,638 INFO L480 AbstractCegarLoop]: Abstraction has 401 states and 945 transitions. [2021-03-10 20:40:10,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:10,639 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 945 transitions. [2021-03-10 20:40:10,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:10,639 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:10,639 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:10,639 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2021-03-10 20:40:10,639 INFO L428 AbstractCegarLoop]: === Iteration 384 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:10,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:10,639 INFO L82 PathProgramCache]: Analyzing trace with hash -542686380, now seen corresponding path program 382 times [2021-03-10 20:40:10,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:10,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613851293] [2021-03-10 20:40:10,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:10,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:10,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613851293] [2021-03-10 20:40:10,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:10,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:10,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702033129] [2021-03-10 20:40:10,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:10,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:10,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:10,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:10,713 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) [2021-03-10 20:40:10,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:10,902 INFO L93 Difference]: Finished difference Result 513 states and 1227 transitions. [2021-03-10 20:40:10,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:10,903 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:10,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:10,903 INFO L225 Difference]: With dead ends: 513 [2021-03-10 20:40:10,904 INFO L226 Difference]: Without dead ends: 416 [2021-03-10 20:40:10,904 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:10,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-03-10 20:40:10,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 406. [2021-03-10 20:40:10,907 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) [2021-03-10 20:40:10,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 960 transitions. [2021-03-10 20:40:10,907 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 960 transitions. Word has length 26 [2021-03-10 20:40:10,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:10,908 INFO L480 AbstractCegarLoop]: Abstraction has 406 states and 960 transitions. [2021-03-10 20:40:10,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:10,908 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 960 transitions. [2021-03-10 20:40:10,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:10,908 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:10,908 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:10,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2021-03-10 20:40:10,908 INFO L428 AbstractCegarLoop]: === Iteration 385 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:10,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:10,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1934830926, now seen corresponding path program 383 times [2021-03-10 20:40:10,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:10,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855487638] [2021-03-10 20:40:10,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:10,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:10,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855487638] [2021-03-10 20:40:10,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:10,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:10,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575876842] [2021-03-10 20:40:10,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:10,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:10,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:10,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:10,994 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) [2021-03-10 20:40:11,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:11,185 INFO L93 Difference]: Finished difference Result 532 states and 1254 transitions. [2021-03-10 20:40:11,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:11,186 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:11,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:11,187 INFO L225 Difference]: With dead ends: 532 [2021-03-10 20:40:11,187 INFO L226 Difference]: Without dead ends: 430 [2021-03-10 20:40:11,187 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 76.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:11,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-03-10 20:40:11,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 416. [2021-03-10 20:40:11,190 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) [2021-03-10 20:40:11,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 974 transitions. [2021-03-10 20:40:11,191 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 974 transitions. Word has length 26 [2021-03-10 20:40:11,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:11,191 INFO L480 AbstractCegarLoop]: Abstraction has 416 states and 974 transitions. [2021-03-10 20:40:11,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:11,191 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 974 transitions. [2021-03-10 20:40:11,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:11,191 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:11,191 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:11,191 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2021-03-10 20:40:11,191 INFO L428 AbstractCegarLoop]: === Iteration 386 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:11,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:11,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1603464470, now seen corresponding path program 384 times [2021-03-10 20:40:11,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:11,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553798924] [2021-03-10 20:40:11,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:11,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:11,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553798924] [2021-03-10 20:40:11,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:11,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:11,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707178526] [2021-03-10 20:40:11,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:11,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:11,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:11,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:11,266 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) [2021-03-10 20:40:11,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:11,460 INFO L93 Difference]: Finished difference Result 513 states and 1207 transitions. [2021-03-10 20:40:11,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:11,460 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 [2021-03-10 20:40:11,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:11,461 INFO L225 Difference]: With dead ends: 513 [2021-03-10 20:40:11,461 INFO L226 Difference]: Without dead ends: 404 [2021-03-10 20:40:11,461 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:11,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-03-10 20:40:11,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 381. [2021-03-10 20:40:11,464 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) [2021-03-10 20:40:11,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 898 transitions. [2021-03-10 20:40:11,464 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 898 transitions. Word has length 26 [2021-03-10 20:40:11,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:11,464 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 898 transitions. [2021-03-10 20:40:11,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:11,464 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 898 transitions. [2021-03-10 20:40:11,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:11,465 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:11,465 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:11,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2021-03-10 20:40:11,465 INFO L428 AbstractCegarLoop]: === Iteration 387 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:11,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:11,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1538144538, now seen corresponding path program 385 times [2021-03-10 20:40:11,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:11,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526958125] [2021-03-10 20:40:11,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:11,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:11,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526958125] [2021-03-10 20:40:11,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:11,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:11,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979364072] [2021-03-10 20:40:11,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:11,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:11,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:11,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:11,535 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) [2021-03-10 20:40:11,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:11,718 INFO L93 Difference]: Finished difference Result 499 states and 1177 transitions. [2021-03-10 20:40:11,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:11,719 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:11,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:11,719 INFO L225 Difference]: With dead ends: 499 [2021-03-10 20:40:11,719 INFO L226 Difference]: Without dead ends: 381 [2021-03-10 20:40:11,719 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:11,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-03-10 20:40:11,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2021-03-10 20:40:11,722 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) [2021-03-10 20:40:11,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 886 transitions. [2021-03-10 20:40:11,723 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 886 transitions. Word has length 26 [2021-03-10 20:40:11,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:11,723 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 886 transitions. [2021-03-10 20:40:11,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:11,723 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 886 transitions. [2021-03-10 20:40:11,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:11,723 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:11,723 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:11,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2021-03-10 20:40:11,723 INFO L428 AbstractCegarLoop]: === Iteration 388 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:11,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:11,724 INFO L82 PathProgramCache]: Analyzing trace with hash 629893402, now seen corresponding path program 386 times [2021-03-10 20:40:11,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:11,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068458993] [2021-03-10 20:40:11,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:11,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:11,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068458993] [2021-03-10 20:40:11,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:11,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:11,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326602441] [2021-03-10 20:40:11,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:11,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:11,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:11,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:11,794 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) [2021-03-10 20:40:11,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:11,978 INFO L93 Difference]: Finished difference Result 491 states and 1149 transitions. [2021-03-10 20:40:11,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:11,979 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:11,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:11,979 INFO L225 Difference]: With dead ends: 491 [2021-03-10 20:40:11,979 INFO L226 Difference]: Without dead ends: 384 [2021-03-10 20:40:11,979 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:11,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-03-10 20:40:11,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 381. [2021-03-10 20:40:11,982 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) [2021-03-10 20:40:11,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 884 transitions. [2021-03-10 20:40:11,983 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 884 transitions. Word has length 26 [2021-03-10 20:40:11,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:11,983 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 884 transitions. [2021-03-10 20:40:11,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:11,983 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 884 transitions. [2021-03-10 20:40:11,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:11,983 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:11,983 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:11,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2021-03-10 20:40:11,983 INFO L428 AbstractCegarLoop]: === Iteration 389 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:11,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:11,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1550469368, now seen corresponding path program 387 times [2021-03-10 20:40:11,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:11,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934954943] [2021-03-10 20:40:11,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:12,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:12,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934954943] [2021-03-10 20:40:12,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:12,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:12,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374460640] [2021-03-10 20:40:12,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:12,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:12,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:12,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:12,065 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) [2021-03-10 20:40:12,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:12,249 INFO L93 Difference]: Finished difference Result 484 states and 1132 transitions. [2021-03-10 20:40:12,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:12,249 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:12,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:12,249 INFO L225 Difference]: With dead ends: 484 [2021-03-10 20:40:12,249 INFO L226 Difference]: Without dead ends: 369 [2021-03-10 20:40:12,250 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 72.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:12,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-03-10 20:40:12,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2021-03-10 20:40:12,252 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) [2021-03-10 20:40:12,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 860 transitions. [2021-03-10 20:40:12,253 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 860 transitions. Word has length 26 [2021-03-10 20:40:12,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:12,253 INFO L480 AbstractCegarLoop]: Abstraction has 369 states and 860 transitions. [2021-03-10 20:40:12,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:12,253 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 860 transitions. [2021-03-10 20:40:12,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:12,253 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:12,253 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:12,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2021-03-10 20:40:12,253 INFO L428 AbstractCegarLoop]: === Iteration 390 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:12,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:12,254 INFO L82 PathProgramCache]: Analyzing trace with hash 924274646, now seen corresponding path program 388 times [2021-03-10 20:40:12,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:12,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122473507] [2021-03-10 20:40:12,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:12,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:12,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122473507] [2021-03-10 20:40:12,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:12,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:12,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449542372] [2021-03-10 20:40:12,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:12,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:12,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:12,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:12,354 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) [2021-03-10 20:40:12,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:12,546 INFO L93 Difference]: Finished difference Result 497 states and 1163 transitions. [2021-03-10 20:40:12,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:12,546 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:12,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:12,547 INFO L225 Difference]: With dead ends: 497 [2021-03-10 20:40:12,547 INFO L226 Difference]: Without dead ends: 349 [2021-03-10 20:40:12,547 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 91.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:12,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-03-10 20:40:12,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 345. [2021-03-10 20:40:12,549 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) [2021-03-10 20:40:12,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 798 transitions. [2021-03-10 20:40:12,550 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 798 transitions. Word has length 26 [2021-03-10 20:40:12,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:12,550 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 798 transitions. [2021-03-10 20:40:12,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:12,550 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 798 transitions. [2021-03-10 20:40:12,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:12,550 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:12,550 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:12,550 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2021-03-10 20:40:12,550 INFO L428 AbstractCegarLoop]: === Iteration 391 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:12,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:12,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1465978148, now seen corresponding path program 389 times [2021-03-10 20:40:12,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:12,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421627937] [2021-03-10 20:40:12,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:12,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:12,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421627937] [2021-03-10 20:40:12,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:12,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:12,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69974333] [2021-03-10 20:40:12,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:12,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:12,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:12,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:12,618 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) [2021-03-10 20:40:12,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:12,801 INFO L93 Difference]: Finished difference Result 469 states and 1098 transitions. [2021-03-10 20:40:12,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:12,802 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:12,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:12,802 INFO L225 Difference]: With dead ends: 469 [2021-03-10 20:40:12,802 INFO L226 Difference]: Without dead ends: 357 [2021-03-10 20:40:12,802 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:12,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-03-10 20:40:12,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2021-03-10 20:40:12,805 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) [2021-03-10 20:40:12,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 822 transitions. [2021-03-10 20:40:12,805 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 822 transitions. Word has length 26 [2021-03-10 20:40:12,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:12,805 INFO L480 AbstractCegarLoop]: Abstraction has 357 states and 822 transitions. [2021-03-10 20:40:12,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:12,805 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 822 transitions. [2021-03-10 20:40:12,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:12,806 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:12,806 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:12,806 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2021-03-10 20:40:12,806 INFO L428 AbstractCegarLoop]: === Iteration 392 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:12,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:12,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1041532148, now seen corresponding path program 390 times [2021-03-10 20:40:12,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:12,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822605387] [2021-03-10 20:40:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:12,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:12,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:12,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822605387] [2021-03-10 20:40:12,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:12,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:12,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678903165] [2021-03-10 20:40:12,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:12,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:12,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:12,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:12,885 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) [2021-03-10 20:40:13,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:13,069 INFO L93 Difference]: Finished difference Result 474 states and 1113 transitions. [2021-03-10 20:40:13,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:13,070 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:13,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:13,070 INFO L225 Difference]: With dead ends: 474 [2021-03-10 20:40:13,070 INFO L226 Difference]: Without dead ends: 376 [2021-03-10 20:40:13,070 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:13,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-03-10 20:40:13,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 362. [2021-03-10 20:40:13,073 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) [2021-03-10 20:40:13,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 837 transitions. [2021-03-10 20:40:13,073 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 837 transitions. Word has length 26 [2021-03-10 20:40:13,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:13,073 INFO L480 AbstractCegarLoop]: Abstraction has 362 states and 837 transitions. [2021-03-10 20:40:13,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:13,074 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 837 transitions. [2021-03-10 20:40:13,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:13,074 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:13,074 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:13,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391 [2021-03-10 20:40:13,074 INFO L428 AbstractCegarLoop]: === Iteration 393 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:13,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:13,074 INFO L82 PathProgramCache]: Analyzing trace with hash -527396394, now seen corresponding path program 391 times [2021-03-10 20:40:13,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:13,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480607653] [2021-03-10 20:40:13,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:13,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:13,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480607653] [2021-03-10 20:40:13,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:13,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:13,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225460636] [2021-03-10 20:40:13,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:13,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:13,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:13,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:13,153 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) [2021-03-10 20:40:13,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:13,337 INFO L93 Difference]: Finished difference Result 470 states and 1093 transitions. [2021-03-10 20:40:13,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:13,338 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 [2021-03-10 20:40:13,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:13,338 INFO L225 Difference]: With dead ends: 470 [2021-03-10 20:40:13,338 INFO L226 Difference]: Without dead ends: 364 [2021-03-10 20:40:13,338 INFO L775 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 [2021-03-10 20:40:13,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-03-10 20:40:13,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 345. [2021-03-10 20:40:13,341 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) [2021-03-10 20:40:13,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 793 transitions. [2021-03-10 20:40:13,341 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 793 transitions. Word has length 26 [2021-03-10 20:40:13,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:13,341 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 793 transitions. [2021-03-10 20:40:13,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:13,341 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 793 transitions. [2021-03-10 20:40:13,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:13,341 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:13,342 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:13,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392 [2021-03-10 20:40:13,342 INFO L428 AbstractCegarLoop]: === Iteration 394 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:13,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:13,342 INFO L82 PathProgramCache]: Analyzing trace with hash -273711274, now seen corresponding path program 392 times [2021-03-10 20:40:13,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:13,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962483990] [2021-03-10 20:40:13,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:13,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:13,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962483990] [2021-03-10 20:40:13,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:13,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:13,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156261761] [2021-03-10 20:40:13,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:13,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:13,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:13,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:13,408 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) [2021-03-10 20:40:13,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:13,580 INFO L93 Difference]: Finished difference Result 452 states and 1049 transitions. [2021-03-10 20:40:13,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:13,580 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:13,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:13,581 INFO L225 Difference]: With dead ends: 452 [2021-03-10 20:40:13,581 INFO L226 Difference]: Without dead ends: 346 [2021-03-10 20:40:13,581 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:13,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-03-10 20:40:13,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 341. [2021-03-10 20:40:13,583 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) [2021-03-10 20:40:13,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 784 transitions. [2021-03-10 20:40:13,584 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 784 transitions. Word has length 26 [2021-03-10 20:40:13,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:13,584 INFO L480 AbstractCegarLoop]: Abstraction has 341 states and 784 transitions. [2021-03-10 20:40:13,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:13,584 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 784 transitions. [2021-03-10 20:40:13,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:13,584 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:13,584 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:13,584 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393 [2021-03-10 20:40:13,584 INFO L428 AbstractCegarLoop]: === Iteration 395 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:13,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:13,585 INFO L82 PathProgramCache]: Analyzing trace with hash -872977896, now seen corresponding path program 393 times [2021-03-10 20:40:13,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:13,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352352282] [2021-03-10 20:40:13,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:13,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:13,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352352282] [2021-03-10 20:40:13,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:13,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:13,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962768045] [2021-03-10 20:40:13,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:13,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:13,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:13,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:13,670 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) [2021-03-10 20:40:13,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:13,850 INFO L93 Difference]: Finished difference Result 448 states and 1039 transitions. [2021-03-10 20:40:13,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:13,851 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:13,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:13,851 INFO L225 Difference]: With dead ends: 448 [2021-03-10 20:40:13,851 INFO L226 Difference]: Without dead ends: 348 [2021-03-10 20:40:13,851 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:13,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-03-10 20:40:13,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 344. [2021-03-10 20:40:13,854 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) [2021-03-10 20:40:13,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 788 transitions. [2021-03-10 20:40:13,854 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 788 transitions. Word has length 26 [2021-03-10 20:40:13,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:13,854 INFO L480 AbstractCegarLoop]: Abstraction has 344 states and 788 transitions. [2021-03-10 20:40:13,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:13,854 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 788 transitions. [2021-03-10 20:40:13,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:13,855 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:13,855 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:13,855 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394 [2021-03-10 20:40:13,855 INFO L428 AbstractCegarLoop]: === Iteration 396 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:13,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:13,855 INFO L82 PathProgramCache]: Analyzing trace with hash -480519240, now seen corresponding path program 394 times [2021-03-10 20:40:13,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:13,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067353708] [2021-03-10 20:40:13,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:13,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:13,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067353708] [2021-03-10 20:40:13,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:13,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:13,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826892030] [2021-03-10 20:40:13,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:13,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:13,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:13,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:13,922 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) [2021-03-10 20:40:14,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:14,092 INFO L93 Difference]: Finished difference Result 453 states and 1051 transitions. [2021-03-10 20:40:14,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:14,093 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:14,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:14,094 INFO L225 Difference]: With dead ends: 453 [2021-03-10 20:40:14,094 INFO L226 Difference]: Without dead ends: 352 [2021-03-10 20:40:14,094 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:14,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-03-10 20:40:14,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 345. [2021-03-10 20:40:14,096 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) [2021-03-10 20:40:14,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 789 transitions. [2021-03-10 20:40:14,097 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 789 transitions. Word has length 26 [2021-03-10 20:40:14,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:14,097 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 789 transitions. [2021-03-10 20:40:14,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:14,097 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 789 transitions. [2021-03-10 20:40:14,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:14,097 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:14,097 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:14,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395 [2021-03-10 20:40:14,097 INFO L428 AbstractCegarLoop]: === Iteration 397 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:14,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:14,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1985358058, now seen corresponding path program 395 times [2021-03-10 20:40:14,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:14,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296435612] [2021-03-10 20:40:14,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:14,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:14,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296435612] [2021-03-10 20:40:14,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:14,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:14,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764602444] [2021-03-10 20:40:14,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:14,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:14,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:14,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:14,164 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) [2021-03-10 20:40:14,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:14,339 INFO L93 Difference]: Finished difference Result 452 states and 1045 transitions. [2021-03-10 20:40:14,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:14,339 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:14,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:14,340 INFO L225 Difference]: With dead ends: 452 [2021-03-10 20:40:14,340 INFO L226 Difference]: Without dead ends: 349 [2021-03-10 20:40:14,340 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:14,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-03-10 20:40:14,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 346. [2021-03-10 20:40:14,342 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) [2021-03-10 20:40:14,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 790 transitions. [2021-03-10 20:40:14,343 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 790 transitions. Word has length 26 [2021-03-10 20:40:14,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:14,343 INFO L480 AbstractCegarLoop]: Abstraction has 346 states and 790 transitions. [2021-03-10 20:40:14,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:14,343 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 790 transitions. [2021-03-10 20:40:14,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:14,343 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:14,343 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:14,343 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396 [2021-03-10 20:40:14,343 INFO L428 AbstractCegarLoop]: === Iteration 398 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:14,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:14,344 INFO L82 PathProgramCache]: Analyzing trace with hash 639440250, now seen corresponding path program 396 times [2021-03-10 20:40:14,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:14,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524813466] [2021-03-10 20:40:14,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:14,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:14,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524813466] [2021-03-10 20:40:14,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:14,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:14,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130463787] [2021-03-10 20:40:14,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:14,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:14,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:14,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:14,410 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) [2021-03-10 20:40:14,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:14,587 INFO L93 Difference]: Finished difference Result 456 states and 1063 transitions. [2021-03-10 20:40:14,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:14,588 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:14,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:14,588 INFO L225 Difference]: With dead ends: 456 [2021-03-10 20:40:14,588 INFO L226 Difference]: Without dead ends: 358 [2021-03-10 20:40:14,588 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:14,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-03-10 20:40:14,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 351. [2021-03-10 20:40:14,591 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) [2021-03-10 20:40:14,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 805 transitions. [2021-03-10 20:40:14,591 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 805 transitions. Word has length 26 [2021-03-10 20:40:14,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:14,591 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 805 transitions. [2021-03-10 20:40:14,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:14,591 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 805 transitions. [2021-03-10 20:40:14,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:14,592 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:14,592 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:14,592 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397 [2021-03-10 20:40:14,592 INFO L428 AbstractCegarLoop]: === Iteration 399 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:14,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:14,592 INFO L82 PathProgramCache]: Analyzing trace with hash -752704296, now seen corresponding path program 397 times [2021-03-10 20:40:14,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:14,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642327066] [2021-03-10 20:40:14,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:14,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:14,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642327066] [2021-03-10 20:40:14,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:14,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:14,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3880227] [2021-03-10 20:40:14,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:14,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:14,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:14,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:14,668 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) [2021-03-10 20:40:14,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:14,841 INFO L93 Difference]: Finished difference Result 456 states and 1056 transitions. [2021-03-10 20:40:14,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:14,842 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 [2021-03-10 20:40:14,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:14,842 INFO L225 Difference]: With dead ends: 456 [2021-03-10 20:40:14,842 INFO L226 Difference]: Without dead ends: 351 [2021-03-10 20:40:14,842 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:14,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-03-10 20:40:14,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 339. [2021-03-10 20:40:14,845 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) [2021-03-10 20:40:14,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 777 transitions. [2021-03-10 20:40:14,845 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 777 transitions. Word has length 26 [2021-03-10 20:40:14,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:14,845 INFO L480 AbstractCegarLoop]: Abstraction has 339 states and 777 transitions. [2021-03-10 20:40:14,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:14,846 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 777 transitions. [2021-03-10 20:40:14,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:14,846 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:14,846 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:14,846 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable398 [2021-03-10 20:40:14,846 INFO L428 AbstractCegarLoop]: === Iteration 400 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:14,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:14,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1846084458, now seen corresponding path program 398 times [2021-03-10 20:40:14,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:14,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179978528] [2021-03-10 20:40:14,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:14,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:14,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179978528] [2021-03-10 20:40:14,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:14,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:14,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114067157] [2021-03-10 20:40:14,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:14,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:14,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:14,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:14,919 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) [2021-03-10 20:40:15,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:15,079 INFO L93 Difference]: Finished difference Result 462 states and 1071 transitions. [2021-03-10 20:40:15,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:15,080 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:15,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:15,080 INFO L225 Difference]: With dead ends: 462 [2021-03-10 20:40:15,080 INFO L226 Difference]: Without dead ends: 311 [2021-03-10 20:40:15,080 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:15,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-03-10 20:40:15,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2021-03-10 20:40:15,082 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) [2021-03-10 20:40:15,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 705 transitions. [2021-03-10 20:40:15,083 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 705 transitions. Word has length 26 [2021-03-10 20:40:15,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:15,083 INFO L480 AbstractCegarLoop]: Abstraction has 311 states and 705 transitions. [2021-03-10 20:40:15,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:15,083 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 705 transitions. [2021-03-10 20:40:15,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:15,083 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:15,083 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:15,083 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399 [2021-03-10 20:40:15,083 INFO L428 AbstractCegarLoop]: === Iteration 401 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:15,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:15,084 INFO L82 PathProgramCache]: Analyzing trace with hash 58627458, now seen corresponding path program 399 times [2021-03-10 20:40:15,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:15,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438838643] [2021-03-10 20:40:15,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:15,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:15,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438838643] [2021-03-10 20:40:15,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:15,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:15,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074061896] [2021-03-10 20:40:15,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:15,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:15,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:15,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:15,155 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) [2021-03-10 20:40:15,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:15,320 INFO L93 Difference]: Finished difference Result 447 states and 1032 transitions. [2021-03-10 20:40:15,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:15,321 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:15,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:15,321 INFO L225 Difference]: With dead ends: 447 [2021-03-10 20:40:15,321 INFO L226 Difference]: Without dead ends: 326 [2021-03-10 20:40:15,321 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:15,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-03-10 20:40:15,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-03-10 20:40:15,323 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) [2021-03-10 20:40:15,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 732 transitions. [2021-03-10 20:40:15,324 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 732 transitions. Word has length 26 [2021-03-10 20:40:15,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:15,324 INFO L480 AbstractCegarLoop]: Abstraction has 326 states and 732 transitions. [2021-03-10 20:40:15,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:15,324 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 732 transitions. [2021-03-10 20:40:15,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:15,324 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:15,324 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:15,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable400 [2021-03-10 20:40:15,324 INFO L428 AbstractCegarLoop]: === Iteration 402 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:15,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:15,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1510301084, now seen corresponding path program 400 times [2021-03-10 20:40:15,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:15,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242021643] [2021-03-10 20:40:15,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:15,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:15,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242021643] [2021-03-10 20:40:15,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:15,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:15,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903471509] [2021-03-10 20:40:15,393 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:15,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:15,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:15,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:15,393 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) [2021-03-10 20:40:15,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:15,547 INFO L93 Difference]: Finished difference Result 451 states and 1024 transitions. [2021-03-10 20:40:15,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:15,548 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:15,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:15,548 INFO L225 Difference]: With dead ends: 451 [2021-03-10 20:40:15,548 INFO L226 Difference]: Without dead ends: 322 [2021-03-10 20:40:15,548 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:15,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-03-10 20:40:15,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 314. [2021-03-10 20:40:15,551 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) [2021-03-10 20:40:15,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 701 transitions. [2021-03-10 20:40:15,551 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 701 transitions. Word has length 26 [2021-03-10 20:40:15,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:15,551 INFO L480 AbstractCegarLoop]: Abstraction has 314 states and 701 transitions. [2021-03-10 20:40:15,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:15,551 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 701 transitions. [2021-03-10 20:40:15,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:15,551 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:15,551 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:15,551 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401 [2021-03-10 20:40:15,551 INFO L428 AbstractCegarLoop]: === Iteration 403 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:15,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:15,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1667639142, now seen corresponding path program 401 times [2021-03-10 20:40:15,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:15,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906091841] [2021-03-10 20:40:15,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:15,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:15,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906091841] [2021-03-10 20:40:15,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:15,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:15,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636898733] [2021-03-10 20:40:15,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:15,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:15,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:15,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:15,632 INFO L87 Difference]: Start difference. First operand 314 states and 701 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:15,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:15,798 INFO L93 Difference]: Finished difference Result 411 states and 939 transitions. [2021-03-10 20:40:15,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:15,798 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 [2021-03-10 20:40:15,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:15,799 INFO L225 Difference]: With dead ends: 411 [2021-03-10 20:40:15,799 INFO L226 Difference]: Without dead ends: 282 [2021-03-10 20:40:15,799 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:15,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-03-10 20:40:15,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 273. [2021-03-10 20:40:15,801 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) [2021-03-10 20:40:15,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 610 transitions. [2021-03-10 20:40:15,801 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 610 transitions. Word has length 26 [2021-03-10 20:40:15,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:15,801 INFO L480 AbstractCegarLoop]: Abstraction has 273 states and 610 transitions. [2021-03-10 20:40:15,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:15,801 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 610 transitions. [2021-03-10 20:40:15,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:15,802 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:15,802 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:15,802 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402 [2021-03-10 20:40:15,802 INFO L428 AbstractCegarLoop]: === Iteration 404 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:15,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:15,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1477860122, now seen corresponding path program 402 times [2021-03-10 20:40:15,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:15,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330603264] [2021-03-10 20:40:15,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:15,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:15,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330603264] [2021-03-10 20:40:15,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:15,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:15,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250297976] [2021-03-10 20:40:15,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:15,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:15,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:15,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:15,869 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) [2021-03-10 20:40:16,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:16,035 INFO L93 Difference]: Finished difference Result 364 states and 835 transitions. [2021-03-10 20:40:16,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:16,035 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:16,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:16,036 INFO L225 Difference]: With dead ends: 364 [2021-03-10 20:40:16,036 INFO L226 Difference]: Without dead ends: 253 [2021-03-10 20:40:16,036 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:16,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-03-10 20:40:16,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 244. [2021-03-10 20:40:16,038 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) [2021-03-10 20:40:16,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 553 transitions. [2021-03-10 20:40:16,038 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 553 transitions. Word has length 26 [2021-03-10 20:40:16,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:16,038 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 553 transitions. [2021-03-10 20:40:16,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:16,038 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 553 transitions. [2021-03-10 20:40:16,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:16,038 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:16,038 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:16,038 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable403 [2021-03-10 20:40:16,038 INFO L428 AbstractCegarLoop]: === Iteration 405 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:16,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:16,039 INFO L82 PathProgramCache]: Analyzing trace with hash -26978696, now seen corresponding path program 403 times [2021-03-10 20:40:16,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:16,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586210492] [2021-03-10 20:40:16,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:16,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:16,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586210492] [2021-03-10 20:40:16,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:16,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:16,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934277392] [2021-03-10 20:40:16,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:16,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:16,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:16,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:16,109 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) [2021-03-10 20:40:16,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:16,277 INFO L93 Difference]: Finished difference Result 350 states and 808 transitions. [2021-03-10 20:40:16,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:16,277 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:16,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:16,278 INFO L225 Difference]: With dead ends: 350 [2021-03-10 20:40:16,278 INFO L226 Difference]: Without dead ends: 250 [2021-03-10 20:40:16,278 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:16,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-03-10 20:40:16,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 244. [2021-03-10 20:40:16,280 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) [2021-03-10 20:40:16,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 552 transitions. [2021-03-10 20:40:16,280 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 552 transitions. Word has length 26 [2021-03-10 20:40:16,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:16,280 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 552 transitions. [2021-03-10 20:40:16,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:16,280 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 552 transitions. [2021-03-10 20:40:16,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:16,281 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:16,281 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:16,281 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable404 [2021-03-10 20:40:16,281 INFO L428 AbstractCegarLoop]: === Iteration 406 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:16,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:16,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1697147684, now seen corresponding path program 404 times [2021-03-10 20:40:16,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:16,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077494108] [2021-03-10 20:40:16,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:16,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:16,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077494108] [2021-03-10 20:40:16,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:16,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:16,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425402187] [2021-03-10 20:40:16,347 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:16,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:16,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:16,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:16,347 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) [2021-03-10 20:40:16,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:16,511 INFO L93 Difference]: Finished difference Result 360 states and 826 transitions. [2021-03-10 20:40:16,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:16,511 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:16,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:16,511 INFO L225 Difference]: With dead ends: 360 [2021-03-10 20:40:16,511 INFO L226 Difference]: Without dead ends: 265 [2021-03-10 20:40:16,512 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:16,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-03-10 20:40:16,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 259. [2021-03-10 20:40:16,513 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) [2021-03-10 20:40:16,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 579 transitions. [2021-03-10 20:40:16,514 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 579 transitions. Word has length 26 [2021-03-10 20:40:16,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:16,514 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 579 transitions. [2021-03-10 20:40:16,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:16,514 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 579 transitions. [2021-03-10 20:40:16,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:16,514 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:16,514 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:16,514 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405 [2021-03-10 20:40:16,514 INFO L428 AbstractCegarLoop]: === Iteration 407 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:16,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:16,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1205675066, now seen corresponding path program 405 times [2021-03-10 20:40:16,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:16,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105618434] [2021-03-10 20:40:16,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:16,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:16,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105618434] [2021-03-10 20:40:16,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:16,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:16,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790620363] [2021-03-10 20:40:16,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:16,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:16,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:16,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:16,580 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) [2021-03-10 20:40:16,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:16,738 INFO L93 Difference]: Finished difference Result 368 states and 838 transitions. [2021-03-10 20:40:16,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:16,738 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:16,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:16,738 INFO L225 Difference]: With dead ends: 368 [2021-03-10 20:40:16,738 INFO L226 Difference]: Without dead ends: 268 [2021-03-10 20:40:16,739 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:16,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-03-10 20:40:16,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 257. [2021-03-10 20:40:16,740 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) [2021-03-10 20:40:16,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 575 transitions. [2021-03-10 20:40:16,741 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 575 transitions. Word has length 26 [2021-03-10 20:40:16,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:16,741 INFO L480 AbstractCegarLoop]: Abstraction has 257 states and 575 transitions. [2021-03-10 20:40:16,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:16,741 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 575 transitions. [2021-03-10 20:40:16,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:16,741 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:16,741 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:16,741 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable406 [2021-03-10 20:40:16,741 INFO L428 AbstractCegarLoop]: === Iteration 408 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:16,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:16,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1087756786, now seen corresponding path program 406 times [2021-03-10 20:40:16,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:16,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297071555] [2021-03-10 20:40:16,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:16,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:16,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297071555] [2021-03-10 20:40:16,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:16,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:16,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012918415] [2021-03-10 20:40:16,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:16,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:16,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:16,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:16,808 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) [2021-03-10 20:40:16,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:16,964 INFO L93 Difference]: Finished difference Result 366 states and 838 transitions. [2021-03-10 20:40:16,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:16,964 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:16,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:16,965 INFO L225 Difference]: With dead ends: 366 [2021-03-10 20:40:16,965 INFO L226 Difference]: Without dead ends: 247 [2021-03-10 20:40:16,965 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:16,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-03-10 20:40:16,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2021-03-10 20:40:16,967 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) [2021-03-10 20:40:16,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 553 transitions. [2021-03-10 20:40:16,967 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 553 transitions. Word has length 26 [2021-03-10 20:40:16,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:16,967 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 553 transitions. [2021-03-10 20:40:16,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:16,967 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 553 transitions. [2021-03-10 20:40:16,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:16,967 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:16,967 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:16,967 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407 [2021-03-10 20:40:16,967 INFO L428 AbstractCegarLoop]: === Iteration 409 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:16,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:16,968 INFO L82 PathProgramCache]: Analyzing trace with hash -703725496, now seen corresponding path program 407 times [2021-03-10 20:40:16,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:16,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773359581] [2021-03-10 20:40:16,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:17,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:17,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773359581] [2021-03-10 20:40:17,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:17,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:17,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904250391] [2021-03-10 20:40:17,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:17,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:17,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:17,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:17,043 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) [2021-03-10 20:40:17,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:17,198 INFO L93 Difference]: Finished difference Result 339 states and 779 transitions. [2021-03-10 20:40:17,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:17,198 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:17,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:17,199 INFO L225 Difference]: With dead ends: 339 [2021-03-10 20:40:17,199 INFO L226 Difference]: Without dead ends: 230 [2021-03-10 20:40:17,199 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:17,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-03-10 20:40:17,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 217. [2021-03-10 20:40:17,200 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) [2021-03-10 20:40:17,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 493 transitions. [2021-03-10 20:40:17,201 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 493 transitions. Word has length 26 [2021-03-10 20:40:17,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:17,201 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 493 transitions. [2021-03-10 20:40:17,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:17,201 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 493 transitions. [2021-03-10 20:40:17,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:17,201 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:17,201 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:17,201 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408 [2021-03-10 20:40:17,201 INFO L428 AbstractCegarLoop]: === Iteration 410 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:17,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:17,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1474886448, now seen corresponding path program 408 times [2021-03-10 20:40:17,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:17,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940374157] [2021-03-10 20:40:17,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:17,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:17,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940374157] [2021-03-10 20:40:17,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:17,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:17,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843870293] [2021-03-10 20:40:17,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:17,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:17,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:17,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:17,267 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) [2021-03-10 20:40:17,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:17,424 INFO L93 Difference]: Finished difference Result 318 states and 736 transitions. [2021-03-10 20:40:17,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:17,424 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:17,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:17,425 INFO L225 Difference]: With dead ends: 318 [2021-03-10 20:40:17,425 INFO L226 Difference]: Without dead ends: 213 [2021-03-10 20:40:17,425 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:17,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-03-10 20:40:17,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2021-03-10 20:40:17,426 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) [2021-03-10 20:40:17,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 485 transitions. [2021-03-10 20:40:17,427 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 485 transitions. Word has length 26 [2021-03-10 20:40:17,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:17,427 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 485 transitions. [2021-03-10 20:40:17,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:17,427 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 485 transitions. [2021-03-10 20:40:17,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:17,427 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:17,427 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:17,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409 [2021-03-10 20:40:17,427 INFO L428 AbstractCegarLoop]: === Iteration 411 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:17,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:17,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1707700686, now seen corresponding path program 409 times [2021-03-10 20:40:17,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:17,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033339528] [2021-03-10 20:40:17,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:17,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:17,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033339528] [2021-03-10 20:40:17,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:17,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 20:40:17,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190034558] [2021-03-10 20:40:17,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:40:17,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:17,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:40:17,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:40:17,489 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) [2021-03-10 20:40:17,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:17,611 INFO L93 Difference]: Finished difference Result 318 states and 737 transitions. [2021-03-10 20:40:17,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:40:17,611 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 [2021-03-10 20:40:17,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:17,612 INFO L225 Difference]: With dead ends: 318 [2021-03-10 20:40:17,612 INFO L226 Difference]: Without dead ends: 215 [2021-03-10 20:40:17,612 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:40:17,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-03-10 20:40:17,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2021-03-10 20:40:17,613 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) [2021-03-10 20:40:17,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 487 transitions. [2021-03-10 20:40:17,614 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 487 transitions. Word has length 26 [2021-03-10 20:40:17,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:17,614 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 487 transitions. [2021-03-10 20:40:17,614 INFO L481 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) [2021-03-10 20:40:17,614 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 487 transitions. [2021-03-10 20:40:17,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:17,614 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:17,614 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:17,614 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable410 [2021-03-10 20:40:17,614 INFO L428 AbstractCegarLoop]: === Iteration 412 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:17,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:17,614 INFO L82 PathProgramCache]: Analyzing trace with hash 37531698, now seen corresponding path program 410 times [2021-03-10 20:40:17,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:17,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664177688] [2021-03-10 20:40:17,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:17,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:17,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664177688] [2021-03-10 20:40:17,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:17,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:17,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748428502] [2021-03-10 20:40:17,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:17,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:17,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:17,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:17,682 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) [2021-03-10 20:40:17,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:17,847 INFO L93 Difference]: Finished difference Result 325 states and 750 transitions. [2021-03-10 20:40:17,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:17,848 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 [2021-03-10 20:40:17,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:17,848 INFO L225 Difference]: With dead ends: 325 [2021-03-10 20:40:17,848 INFO L226 Difference]: Without dead ends: 227 [2021-03-10 20:40:17,848 INFO L775 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 [2021-03-10 20:40:17,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-03-10 20:40:17,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 220. [2021-03-10 20:40:17,850 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) [2021-03-10 20:40:17,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 499 transitions. [2021-03-10 20:40:17,850 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 499 transitions. Word has length 26 [2021-03-10 20:40:17,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:17,850 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 499 transitions. [2021-03-10 20:40:17,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:17,850 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 499 transitions. [2021-03-10 20:40:17,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:17,851 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:17,851 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:17,851 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable411 [2021-03-10 20:40:17,851 INFO L428 AbstractCegarLoop]: === Iteration 413 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:17,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:17,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1354612848, now seen corresponding path program 411 times [2021-03-10 20:40:17,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:17,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899621139] [2021-03-10 20:40:17,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:17,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:17,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899621139] [2021-03-10 20:40:17,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:17,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:17,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965687603] [2021-03-10 20:40:17,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:17,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:17,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:17,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:17,916 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) [2021-03-10 20:40:18,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:18,063 INFO L93 Difference]: Finished difference Result 331 states and 761 transitions. [2021-03-10 20:40:18,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:18,064 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:18,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:18,064 INFO L225 Difference]: With dead ends: 331 [2021-03-10 20:40:18,065 INFO L226 Difference]: Without dead ends: 220 [2021-03-10 20:40:18,065 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:18,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-03-10 20:40:18,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2021-03-10 20:40:18,066 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) [2021-03-10 20:40:18,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 492 transitions. [2021-03-10 20:40:18,067 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 492 transitions. Word has length 26 [2021-03-10 20:40:18,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:18,067 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 492 transitions. [2021-03-10 20:40:18,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:18,067 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 492 transitions. [2021-03-10 20:40:18,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:18,067 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:18,067 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:18,067 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable412 [2021-03-10 20:40:18,067 INFO L428 AbstractCegarLoop]: === Iteration 414 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:18,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:18,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1023246392, now seen corresponding path program 412 times [2021-03-10 20:40:18,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:18,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956146658] [2021-03-10 20:40:18,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:18,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:18,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956146658] [2021-03-10 20:40:18,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:18,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:18,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178547223] [2021-03-10 20:40:18,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:18,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:18,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:18,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:18,132 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) [2021-03-10 20:40:18,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:18,279 INFO L93 Difference]: Finished difference Result 313 states and 725 transitions. [2021-03-10 20:40:18,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:18,280 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:18,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:18,280 INFO L225 Difference]: With dead ends: 313 [2021-03-10 20:40:18,280 INFO L226 Difference]: Without dead ends: 199 [2021-03-10 20:40:18,280 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:18,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-03-10 20:40:18,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2021-03-10 20:40:18,282 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) [2021-03-10 20:40:18,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 451 transitions. [2021-03-10 20:40:18,282 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 451 transitions. Word has length 26 [2021-03-10 20:40:18,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:18,282 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 451 transitions. [2021-03-10 20:40:18,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:18,282 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 451 transitions. [2021-03-10 20:40:18,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:18,282 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:18,283 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:18,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable413 [2021-03-10 20:40:18,283 INFO L428 AbstractCegarLoop]: === Iteration 415 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:18,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:18,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1170207830, now seen corresponding path program 413 times [2021-03-10 20:40:18,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:18,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790134838] [2021-03-10 20:40:18,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:18,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:18,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790134838] [2021-03-10 20:40:18,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:18,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:18,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955395108] [2021-03-10 20:40:18,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:18,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:18,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:18,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:18,358 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) [2021-03-10 20:40:18,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:18,502 INFO L93 Difference]: Finished difference Result 296 states and 693 transitions. [2021-03-10 20:40:18,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:18,503 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 [2021-03-10 20:40:18,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:18,503 INFO L225 Difference]: With dead ends: 296 [2021-03-10 20:40:18,503 INFO L226 Difference]: Without dead ends: 191 [2021-03-10 20:40:18,503 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:18,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-03-10 20:40:18,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2021-03-10 20:40:18,504 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) [2021-03-10 20:40:18,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 441 transitions. [2021-03-10 20:40:18,505 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 441 transitions. Word has length 26 [2021-03-10 20:40:18,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:18,505 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 441 transitions. [2021-03-10 20:40:18,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:18,505 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 441 transitions. [2021-03-10 20:40:18,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:18,505 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:18,505 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:18,505 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable414 [2021-03-10 20:40:18,505 INFO L428 AbstractCegarLoop]: === Iteration 416 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:18,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:18,505 INFO L82 PathProgramCache]: Analyzing trace with hash -499961158, now seen corresponding path program 414 times [2021-03-10 20:40:18,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:18,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971177859] [2021-03-10 20:40:18,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:18,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:18,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971177859] [2021-03-10 20:40:18,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:18,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:18,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156921270] [2021-03-10 20:40:18,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:18,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:18,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:18,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:18,573 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) [2021-03-10 20:40:18,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:18,714 INFO L93 Difference]: Finished difference Result 294 states and 685 transitions. [2021-03-10 20:40:18,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:18,715 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:18,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:18,715 INFO L225 Difference]: With dead ends: 294 [2021-03-10 20:40:18,715 INFO L226 Difference]: Without dead ends: 181 [2021-03-10 20:40:18,715 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:18,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-03-10 20:40:18,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-03-10 20:40:18,717 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) [2021-03-10 20:40:18,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 415 transitions. [2021-03-10 20:40:18,717 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 415 transitions. Word has length 26 [2021-03-10 20:40:18,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:18,717 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 415 transitions. [2021-03-10 20:40:18,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:18,717 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 415 transitions. [2021-03-10 20:40:18,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:18,717 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:18,717 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:18,717 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable415 [2021-03-10 20:40:18,717 INFO L428 AbstractCegarLoop]: === Iteration 417 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:18,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:18,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1892105704, now seen corresponding path program 415 times [2021-03-10 20:40:18,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:18,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982721871] [2021-03-10 20:40:18,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:18,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:18,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982721871] [2021-03-10 20:40:18,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:18,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:18,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849891625] [2021-03-10 20:40:18,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:18,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:18,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:18,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:18,784 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) [2021-03-10 20:40:18,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:18,918 INFO L93 Difference]: Finished difference Result 282 states and 659 transitions. [2021-03-10 20:40:18,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:18,918 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 20:40:18,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:18,919 INFO L225 Difference]: With dead ends: 282 [2021-03-10 20:40:18,919 INFO L226 Difference]: Without dead ends: 179 [2021-03-10 20:40:18,919 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:18,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-03-10 20:40:18,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-03-10 20:40:18,920 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) [2021-03-10 20:40:18,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 411 transitions. [2021-03-10 20:40:18,920 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 411 transitions. Word has length 26 [2021-03-10 20:40:18,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:18,921 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 411 transitions. [2021-03-10 20:40:18,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:18,921 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 411 transitions. [2021-03-10 20:40:18,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 20:40:18,921 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:40:18,921 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:40:18,921 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable416 [2021-03-10 20:40:18,921 INFO L428 AbstractCegarLoop]: === Iteration 418 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:40:18,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:40:18,921 INFO L82 PathProgramCache]: Analyzing trace with hash 493461030, now seen corresponding path program 416 times [2021-03-10 20:40:18,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:40:18,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484583254] [2021-03-10 20:40:18,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:40:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:40:18,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:40:18,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484583254] [2021-03-10 20:40:18,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:40:18,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 20:40:18,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352344392] [2021-03-10 20:40:18,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 20:40:18,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:40:18,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 20:40:18,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:18,995 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) [2021-03-10 20:40:19,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:40:19,116 INFO L93 Difference]: Finished difference Result 178 states and 410 transitions. [2021-03-10 20:40:19,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 20:40:19,117 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 [2021-03-10 20:40:19,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:40:19,117 INFO L225 Difference]: With dead ends: 178 [2021-03-10 20:40:19,117 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 20:40:19,117 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-10 20:40:19,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 20:40:19,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 20:40:19,117 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) [2021-03-10 20:40:19,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 20:40:19,117 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2021-03-10 20:40:19,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:40:19,117 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 20:40:19,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:40:19,117 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 20:40:19,117 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 20:40:19,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417 [2021-03-10 20:40:19,120 INFO L202 PluginConnector]: Adding new model sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 08:40:19 BasicIcfg [2021-03-10 20:40:19,120 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 20:40:19,121 INFO L168 Benchmark]: Toolchain (without parser) took 103380.32 ms. Allocated memory was 255.9 MB in the beginning and 509.6 MB in the end (delta: 253.8 MB). Free memory was 236.9 MB in the beginning and 422.8 MB in the end (delta: -185.9 MB). Peak memory consumption was 67.9 MB. Max. memory is 16.0 GB. [2021-03-10 20:40:19,121 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 20:40:19,121 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.01 ms. Allocated memory is still 255.9 MB. Free memory was 236.4 MB in the beginning and 234.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 20:40:19,121 INFO L168 Benchmark]: Boogie Preprocessor took 11.75 ms. Allocated memory is still 255.9 MB. Free memory was 234.9 MB in the beginning and 234.2 MB in the end (delta: 768.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 20:40:19,121 INFO L168 Benchmark]: RCFGBuilder took 125.49 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 225.6 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-10 20:40:19,121 INFO L168 Benchmark]: TraceAbstraction took 103210.04 ms. Allocated memory was 255.9 MB in the beginning and 509.6 MB in the end (delta: 253.8 MB). Free memory was 241.1 MB in the beginning and 422.8 MB in the end (delta: -181.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 16.0 GB. [2021-03-10 20:40:19,122 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 0.10 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 16.01 ms. Allocated memory is still 255.9 MB. Free memory was 236.4 MB in the beginning and 234.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.75 ms. Allocated memory is still 255.9 MB. Free memory was 234.9 MB in the beginning and 234.2 MB in the end (delta: 768.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 125.49 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 225.6 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 103210.04 ms. Allocated memory was 255.9 MB in the beginning and 509.6 MB in the end (delta: 253.8 MB). Free memory was 241.1 MB in the beginning and 422.8 MB in the end (delta: -181.7 MB). Peak memory consumption was 70.7 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 103135.1ms, OverallIterations: 418, TraceHistogramMax: 1, EmptinessCheckTime: 456.0ms, AutomataDifference: 70753.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 130.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33617 SDtfs, 21628 SDslu, 185475 SDs, 0 SdLazy, 149233 SolverSat, 3871 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 45162.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3750 GetRequests, 109 SyntacticMatches, 416 SemanticMatches, 3225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21436.2ms 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: 5043.4ms AutomataMinimizationTime, 418 MinimizatonAttempts, 33805 StatesRemovedByMinimization, 402 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 102.5ms SsaConstructionTime, 355.9ms SatisfiabilityAnalysisTime, 25287.5ms 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...