/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:17:26,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:17:26,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:17:26,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:17:26,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:17:26,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:17:26,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:17:26,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:17:26,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:17:26,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:17:26,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:17:26,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:17:26,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:17:26,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:17:26,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:17:26,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:17:26,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:17:26,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:17:26,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:17:26,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:17:26,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:17:26,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:17:26,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:17:26,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:17:26,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:17:26,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:17:26,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:17:26,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:17:26,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:17:26,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:17:26,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:17:26,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:17:26,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:17:26,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:17:26,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:17:26,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:17:26,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:17:26,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:17:26,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:17:26,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:17:26,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:17:26,616 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:17:26,654 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:17:26,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:17:26,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:17:26,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:17:26,657 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:17:26,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:17:26,657 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:17:26,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:17:26,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:17:26,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:17:26,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:17:26,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:17:26,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:17:26,660 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:17:26,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:17:26,660 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:17:26,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:17:26,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:17:26,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:17:26,661 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:17:26,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:17:26,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:17:26,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:17:26,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:17:26,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:17:26,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:17:26,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:17:26,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:17:26,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:17:26,663 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:17:26,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:17:26,965 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:17:26,968 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:17:26,969 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:17:26,970 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:17:26,971 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 19:17:27,041 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/348cd5d60/3213ba9921f1409e9933296aeb3a86cf/FLAGdc1f81fd4 [2020-10-12 19:17:27,644 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:17:27,645 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 19:17:27,670 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/348cd5d60/3213ba9921f1409e9933296aeb3a86cf/FLAGdc1f81fd4 [2020-10-12 19:17:27,881 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/348cd5d60/3213ba9921f1409e9933296aeb3a86cf [2020-10-12 19:17:27,889 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:17:27,891 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:17:27,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:17:27,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:17:27,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:17:27,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:17:27" (1/1) ... [2020-10-12 19:17:27,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7798a6c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:17:27, skipping insertion in model container [2020-10-12 19:17:27,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:17:27" (1/1) ... [2020-10-12 19:17:27,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:17:27,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:17:28,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:17:28,452 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:17:28,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:17:28,639 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:17:28,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:17:28 WrapperNode [2020-10-12 19:17:28,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:17:28,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:17:28,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:17:28,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:17:28,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:17:28" (1/1) ... [2020-10-12 19:17:28,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:17:28" (1/1) ... [2020-10-12 19:17:28,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:17:28" (1/1) ... [2020-10-12 19:17:28,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:17:28" (1/1) ... [2020-10-12 19:17:28,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:17:28" (1/1) ... [2020-10-12 19:17:28,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:17:28" (1/1) ... [2020-10-12 19:17:28,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:17:28" (1/1) ... [2020-10-12 19:17:28,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:17:28,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:17:28,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:17:28,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:17:28,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:17:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-12 19:17:28,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:17:28,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:17:28,813 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:17:28,814 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:17:28,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:17:28,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:17:28,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:17:28,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:17:28,815 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:17:28,815 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:17:28,815 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:17:28,815 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:17:28,815 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:17:28,816 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:17:28,816 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:17:28,816 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:17:28,816 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:17:28,816 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:17:28,816 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:17:28,817 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:17:28,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:17:28,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:17:30,300 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:17:30,300 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:17:30,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:17:30 BoogieIcfgContainer [2020-10-12 19:17:30,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:17:30,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:17:30,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:17:30,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:17:30,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:17:27" (1/3) ... [2020-10-12 19:17:30,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786b80cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:17:30, skipping insertion in model container [2020-10-12 19:17:30,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:17:28" (2/3) ... [2020-10-12 19:17:30,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786b80cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:17:30, skipping insertion in model container [2020-10-12 19:17:30,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:17:30" (3/3) ... [2020-10-12 19:17:30,316 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 19:17:30,327 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:17:30,336 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:17:30,351 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:17:30,389 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:17:30,389 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:17:30,389 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:17:30,389 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:17:30,389 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:17:30,390 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:17:30,390 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:17:30,390 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:17:30,414 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2020-10-12 19:17:30,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 19:17:30,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:17:30,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:17:30,434 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:17:30,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:17:30,440 INFO L82 PathProgramCache]: Analyzing trace with hash -425912833, now seen corresponding path program 1 times [2020-10-12 19:17:30,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:17:30,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593663042] [2020-10-12 19:17:30,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:17:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:31,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:31,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:31,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:32,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:32,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:35,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:35,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 19:17:35,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:17:35,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:17:35,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:35,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:17:35,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:17:35,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 19:17:35,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:17:36,664 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:17:36,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:17:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:36,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:36,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:36,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:17:36,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:17:36,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:17:36,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:36,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:17:36,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:17:36,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:17:36,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:17:36,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:17:36,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593663042] [2020-10-12 19:17:36,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:17:36,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:17:36,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322210441] [2020-10-12 19:17:36,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:17:36,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:17:36,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:17:36,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:17:36,780 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 7 states. [2020-10-12 19:17:37,632 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-10-12 19:17:40,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:17:40,205 INFO L93 Difference]: Finished difference Result 1423 states and 2426 transitions. [2020-10-12 19:17:40,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 19:17:40,208 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-12 19:17:40,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:17:40,266 INFO L225 Difference]: With dead ends: 1423 [2020-10-12 19:17:40,266 INFO L226 Difference]: Without dead ends: 1265 [2020-10-12 19:17:40,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:17:40,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2020-10-12 19:17:40,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 459. [2020-10-12 19:17:40,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-10-12 19:17:40,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 764 transitions. [2020-10-12 19:17:40,401 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 764 transitions. Word has length 114 [2020-10-12 19:17:40,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:17:40,402 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 764 transitions. [2020-10-12 19:17:40,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:17:40,403 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 764 transitions. [2020-10-12 19:17:40,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 19:17:40,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:17:40,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:17:40,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:17:40,409 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:17:40,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:17:40,409 INFO L82 PathProgramCache]: Analyzing trace with hash -384564213, now seen corresponding path program 1 times [2020-10-12 19:17:40,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:17:40,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550652765] [2020-10-12 19:17:40,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:17:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:40,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:40,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:41,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:41,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:41,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:41,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:45,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:45,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 19:17:45,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:17:45,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-12 19:17:45,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:45,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:17:45,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 19:17:45,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 19:17:45,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:17:45,920 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:17:45,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:17:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:45,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:45,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:45,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:17:45,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:17:45,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 19:17:45,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:45,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:17:45,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:17:45,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:17:45,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:17:45,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:17:45,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550652765] [2020-10-12 19:17:45,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:17:45,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:17:45,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202004856] [2020-10-12 19:17:45,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:17:45,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:17:45,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:17:45,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:17:45,988 INFO L87 Difference]: Start difference. First operand 459 states and 764 transitions. Second operand 8 states. [2020-10-12 19:17:46,422 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2020-10-12 19:17:49,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:17:49,536 INFO L93 Difference]: Finished difference Result 3271 states and 5501 transitions. [2020-10-12 19:17:49,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:17:49,537 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 115 [2020-10-12 19:17:49,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:17:49,558 INFO L225 Difference]: With dead ends: 3271 [2020-10-12 19:17:49,558 INFO L226 Difference]: Without dead ends: 3005 [2020-10-12 19:17:49,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:17:49,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2020-10-12 19:17:49,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 1179. [2020-10-12 19:17:49,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1179 states. [2020-10-12 19:17:49,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1979 transitions. [2020-10-12 19:17:49,689 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1979 transitions. Word has length 115 [2020-10-12 19:17:49,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:17:49,691 INFO L479 AbstractCegarLoop]: Abstraction has 1179 states and 1979 transitions. [2020-10-12 19:17:49,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:17:49,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1979 transitions. [2020-10-12 19:17:49,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 19:17:49,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:17:49,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:17:49,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:17:49,700 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:17:49,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:17:49,701 INFO L82 PathProgramCache]: Analyzing trace with hash 901801030, now seen corresponding path program 1 times [2020-10-12 19:17:49,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:17:49,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800793657] [2020-10-12 19:17:49,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:17:49,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:49,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:49,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:50,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:50,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:50,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:50,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:54,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:54,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 19:17:54,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:17:54,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:17:54,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:54,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:17:54,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:17:54,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 19:17:54,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:17:55,217 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:17:55,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:17:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:55,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:55,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:55,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:17:55,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:17:55,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 19:17:55,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:17:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:17:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:17:55,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:17:55,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:17:55,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800793657] [2020-10-12 19:17:55,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:17:55,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:17:55,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040303967] [2020-10-12 19:17:55,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:17:55,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:17:55,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:17:55,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:17:55,335 INFO L87 Difference]: Start difference. First operand 1179 states and 1979 transitions. Second operand 8 states. [2020-10-12 19:17:55,858 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2020-10-12 19:17:59,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:17:59,713 INFO L93 Difference]: Finished difference Result 9378 states and 15770 transitions. [2020-10-12 19:17:59,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:17:59,714 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 116 [2020-10-12 19:17:59,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:17:59,764 INFO L225 Difference]: With dead ends: 9378 [2020-10-12 19:17:59,764 INFO L226 Difference]: Without dead ends: 8489 [2020-10-12 19:17:59,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:17:59,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8489 states. [2020-10-12 19:18:00,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8489 to 3287. [2020-10-12 19:18:00,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3287 states. [2020-10-12 19:18:00,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3287 states to 3287 states and 5521 transitions. [2020-10-12 19:18:00,143 INFO L78 Accepts]: Start accepts. Automaton has 3287 states and 5521 transitions. Word has length 116 [2020-10-12 19:18:00,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:18:00,146 INFO L479 AbstractCegarLoop]: Abstraction has 3287 states and 5521 transitions. [2020-10-12 19:18:00,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:18:00,146 INFO L276 IsEmpty]: Start isEmpty. Operand 3287 states and 5521 transitions. [2020-10-12 19:18:00,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 19:18:00,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:00,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:18:00,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:18:00,152 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:00,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:00,153 INFO L82 PathProgramCache]: Analyzing trace with hash 2128975922, now seen corresponding path program 1 times [2020-10-12 19:18:00,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:00,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392417658] [2020-10-12 19:18:00,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:00,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:00,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:00,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:01,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:01,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:01,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:05,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:05,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 19:18:05,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:18:05,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:18:05,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:05,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:18:05,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:18:05,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 19:18:05,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:05,684 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:18:05,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:18:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:05,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:05,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:05,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:18:05,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:18:05,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:18:05,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:05,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:18:05,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:18:05,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:18:05,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:05,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:18:05,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392417658] [2020-10-12 19:18:05,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:18:05,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:18:05,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935623501] [2020-10-12 19:18:05,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:18:05,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:18:05,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:18:05,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:18:05,754 INFO L87 Difference]: Start difference. First operand 3287 states and 5521 transitions. Second operand 8 states. [2020-10-12 19:18:06,184 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2020-10-12 19:18:09,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:18:09,831 INFO L93 Difference]: Finished difference Result 26706 states and 44819 transitions. [2020-10-12 19:18:09,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:18:09,831 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 117 [2020-10-12 19:18:09,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:18:09,924 INFO L225 Difference]: With dead ends: 26706 [2020-10-12 19:18:09,925 INFO L226 Difference]: Without dead ends: 23820 [2020-10-12 19:18:09,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:18:09,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23820 states. [2020-10-12 19:18:10,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23820 to 9135. [2020-10-12 19:18:10,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9135 states. [2020-10-12 19:18:11,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9135 states to 9135 states and 15319 transitions. [2020-10-12 19:18:11,000 INFO L78 Accepts]: Start accepts. Automaton has 9135 states and 15319 transitions. Word has length 117 [2020-10-12 19:18:11,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:18:11,001 INFO L479 AbstractCegarLoop]: Abstraction has 9135 states and 15319 transitions. [2020-10-12 19:18:11,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:18:11,001 INFO L276 IsEmpty]: Start isEmpty. Operand 9135 states and 15319 transitions. [2020-10-12 19:18:11,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-12 19:18:11,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:11,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:18:11,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:18:11,004 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:11,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:11,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1521249933, now seen corresponding path program 1 times [2020-10-12 19:18:11,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:11,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733317377] [2020-10-12 19:18:11,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:11,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:11,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:11,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:11,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:11,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:11,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:16,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:16,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 19:18:16,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:18:16,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4982 [2020-10-12 19:18:16,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:16,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:18:16,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:18:16,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 19:18:16,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:16,515 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:18:16,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:18:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:16,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:16,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:16,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:18:16,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:18:16,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:18:16,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:16,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:18:16,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:18:16,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:18:16,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:16,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:18:16,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733317377] [2020-10-12 19:18:16,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:18:16,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:18:16,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93544669] [2020-10-12 19:18:16,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:18:16,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:18:16,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:18:16,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:18:16,566 INFO L87 Difference]: Start difference. First operand 9135 states and 15319 transitions. Second operand 8 states. [2020-10-12 19:18:16,994 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2020-10-12 19:18:23,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:18:23,472 INFO L93 Difference]: Finished difference Result 77348 states and 129517 transitions. [2020-10-12 19:18:23,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:18:23,473 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 118 [2020-10-12 19:18:23,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:18:23,690 INFO L225 Difference]: With dead ends: 77348 [2020-10-12 19:18:23,690 INFO L226 Difference]: Without dead ends: 68691 [2020-10-12 19:18:23,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:18:23,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68691 states. [2020-10-12 19:18:26,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68691 to 25437. [2020-10-12 19:18:26,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25437 states. [2020-10-12 19:18:26,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25437 states to 25437 states and 42559 transitions. [2020-10-12 19:18:26,888 INFO L78 Accepts]: Start accepts. Automaton has 25437 states and 42559 transitions. Word has length 118 [2020-10-12 19:18:26,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:18:26,889 INFO L479 AbstractCegarLoop]: Abstraction has 25437 states and 42559 transitions. [2020-10-12 19:18:26,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:18:26,889 INFO L276 IsEmpty]: Start isEmpty. Operand 25437 states and 42559 transitions. [2020-10-12 19:18:26,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 19:18:26,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:26,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:18:26,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:18:26,892 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:26,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:26,893 INFO L82 PathProgramCache]: Analyzing trace with hash -686071726, now seen corresponding path program 1 times [2020-10-12 19:18:26,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:26,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412075210] [2020-10-12 19:18:26,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:26,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:27,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:27,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:27,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:27,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:27,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:28,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:31,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:31,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 19:18:31,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:18:31,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-12 19:18:31,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:31,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:18:31,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-12 19:18:31,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 19:18:31,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:18:32,461 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:18:32,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:18:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:32,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:32,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:32,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:18:32,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:18:32,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:18:32,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:32,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:18:32,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:18:32,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:18:32,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:18:32,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412075210] [2020-10-12 19:18:32,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:18:32,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:18:32,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258983788] [2020-10-12 19:18:32,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:18:32,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:18:32,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:18:32,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:18:32,521 INFO L87 Difference]: Start difference. First operand 25437 states and 42559 transitions. Second operand 5 states. [2020-10-12 19:18:38,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:18:38,183 INFO L93 Difference]: Finished difference Result 71997 states and 120451 transitions. [2020-10-12 19:18:38,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:18:38,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-12 19:18:38,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:18:38,305 INFO L225 Difference]: With dead ends: 71997 [2020-10-12 19:18:38,305 INFO L226 Difference]: Without dead ends: 46915 [2020-10-12 19:18:38,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:18:38,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46915 states. [2020-10-12 19:18:41,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46915 to 46525. [2020-10-12 19:18:41,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46525 states. [2020-10-12 19:18:41,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46525 states to 46525 states and 77448 transitions. [2020-10-12 19:18:41,907 INFO L78 Accepts]: Start accepts. Automaton has 46525 states and 77448 transitions. Word has length 120 [2020-10-12 19:18:41,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:18:41,907 INFO L479 AbstractCegarLoop]: Abstraction has 46525 states and 77448 transitions. [2020-10-12 19:18:41,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:18:41,908 INFO L276 IsEmpty]: Start isEmpty. Operand 46525 states and 77448 transitions. [2020-10-12 19:18:41,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 19:18:41,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:41,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:18:41,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:18:41,912 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:41,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:41,912 INFO L82 PathProgramCache]: Analyzing trace with hash 231089215, now seen corresponding path program 1 times [2020-10-12 19:18:41,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:41,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802692485] [2020-10-12 19:18:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:41,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:42,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:42,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:42,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:42,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:42,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:46,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:46,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 19:18:46,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:18:46,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:18:46,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:46,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:18:46,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-12 19:18:46,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 19:18:46,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:47,559 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:18:47,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:18:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:47,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:47,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:47,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:18:47,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:18:47,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 19:18:47,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:47,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:18:47,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:18:47,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:18:47,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:18:47,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:18:47,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802692485] [2020-10-12 19:18:47,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:18:47,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:18:47,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479197068] [2020-10-12 19:18:47,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:18:47,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:18:47,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:18:47,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:18:47,677 INFO L87 Difference]: Start difference. First operand 46525 states and 77448 transitions. Second operand 5 states. [2020-10-12 19:18:48,229 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2020-10-12 19:18:56,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:18:56,299 INFO L93 Difference]: Finished difference Result 120675 states and 200767 transitions. [2020-10-12 19:18:56,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:18:56,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-12 19:18:56,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:18:56,436 INFO L225 Difference]: With dead ends: 120675 [2020-10-12 19:18:56,436 INFO L226 Difference]: Without dead ends: 74370 [2020-10-12 19:18:56,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:18:56,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74370 states. [2020-10-12 19:19:02,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74370 to 74250. [2020-10-12 19:19:02,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74250 states. [2020-10-12 19:19:02,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74250 states to 74250 states and 122857 transitions. [2020-10-12 19:19:02,281 INFO L78 Accepts]: Start accepts. Automaton has 74250 states and 122857 transitions. Word has length 120 [2020-10-12 19:19:02,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:19:02,282 INFO L479 AbstractCegarLoop]: Abstraction has 74250 states and 122857 transitions. [2020-10-12 19:19:02,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:19:02,282 INFO L276 IsEmpty]: Start isEmpty. Operand 74250 states and 122857 transitions. [2020-10-12 19:19:02,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 19:19:02,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:19:02,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:19:02,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:19:02,286 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:19:02,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:19:02,286 INFO L82 PathProgramCache]: Analyzing trace with hash 841196012, now seen corresponding path program 1 times [2020-10-12 19:19:02,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:19:02,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691018882] [2020-10-12 19:19:02,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:19:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:02,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:02,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:02,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:02,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:02,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:02,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:02,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:03,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:07,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:07,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 19:19:07,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:19:07,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 19:19:07,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:07,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:19:07,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:19:07,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 19:19:07,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:07,901 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:19:07,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:19:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:07,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:07,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:07,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:19:07,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:19:07,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:19:07,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:07,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:19:07,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:19:07,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:19:07,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:07,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:19:07,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691018882] [2020-10-12 19:19:07,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:19:07,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:19:07,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337985256] [2020-10-12 19:19:07,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:19:07,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:19:07,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:19:07,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:19:07,972 INFO L87 Difference]: Start difference. First operand 74250 states and 122857 transitions. Second operand 5 states. [2020-10-12 19:19:22,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:19:22,016 INFO L93 Difference]: Finished difference Result 220346 states and 364633 transitions. [2020-10-12 19:19:22,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:19:22,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-12 19:19:22,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:19:22,360 INFO L225 Difference]: With dead ends: 220346 [2020-10-12 19:19:22,360 INFO L226 Difference]: Without dead ends: 146129 [2020-10-12 19:19:22,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:19:22,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146129 states. [2020-10-12 19:19:36,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146129 to 146127. [2020-10-12 19:19:36,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146127 states. [2020-10-12 19:19:36,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146127 states to 146127 states and 240747 transitions. [2020-10-12 19:19:36,503 INFO L78 Accepts]: Start accepts. Automaton has 146127 states and 240747 transitions. Word has length 123 [2020-10-12 19:19:36,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:19:36,504 INFO L479 AbstractCegarLoop]: Abstraction has 146127 states and 240747 transitions. [2020-10-12 19:19:36,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:19:36,504 INFO L276 IsEmpty]: Start isEmpty. Operand 146127 states and 240747 transitions. [2020-10-12 19:19:36,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 19:19:36,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:19:36,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:19:36,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:19:36,509 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:19:36,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:19:36,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1164158325, now seen corresponding path program 1 times [2020-10-12 19:19:36,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:19:36,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562889741] [2020-10-12 19:19:36,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:19:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:36,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:36,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:36,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:36,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:36,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:37,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:37,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:41,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:41,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 19:19:41,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:19:41,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:19:41,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:41,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:19:41,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:19:41,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 19:19:41,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:41,995 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:19:41,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:19:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:42,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:42,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:42,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:19:42,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:19:42,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:19:42,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:19:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:19:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:19:42,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:42,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:19:42,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562889741] [2020-10-12 19:19:42,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:19:42,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:19:42,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628330] [2020-10-12 19:19:42,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:19:42,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:19:42,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:19:42,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:19:42,058 INFO L87 Difference]: Start difference. First operand 146127 states and 240747 transitions. Second operand 5 states. [2020-10-12 19:20:09,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:20:09,928 INFO L93 Difference]: Finished difference Result 432229 states and 712481 transitions. [2020-10-12 19:20:09,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:20:09,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-12 19:20:09,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:20:10,564 INFO L225 Difference]: With dead ends: 432229 [2020-10-12 19:20:10,564 INFO L226 Difference]: Without dead ends: 286158 [2020-10-12 19:20:10,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:20:10,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286158 states. [2020-10-12 19:20:38,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286158 to 286156. [2020-10-12 19:20:38,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286156 states. [2020-10-12 19:20:38,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286156 states to 286156 states and 469550 transitions. [2020-10-12 19:20:38,961 INFO L78 Accepts]: Start accepts. Automaton has 286156 states and 469550 transitions. Word has length 125 [2020-10-12 19:20:38,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:20:38,962 INFO L479 AbstractCegarLoop]: Abstraction has 286156 states and 469550 transitions. [2020-10-12 19:20:38,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:20:38,962 INFO L276 IsEmpty]: Start isEmpty. Operand 286156 states and 469550 transitions. [2020-10-12 19:20:38,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 19:20:38,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:20:38,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:20:38,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:20:38,972 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:20:38,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:20:38,972 INFO L82 PathProgramCache]: Analyzing trace with hash -909527594, now seen corresponding path program 1 times [2020-10-12 19:20:38,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:20:38,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881658596] [2020-10-12 19:20:38,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:20:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:39,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:39,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:39,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:39,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:39,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:39,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:39,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:39,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:43,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:43,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:43,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:43,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:43,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 19:20:43,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:20:43,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 19:20:43,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:43,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:20:43,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-12 19:20:43,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 19:20:43,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:44,367 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:20:44,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:20:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:44,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:44,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:44,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:20:44,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:20:44,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 19:20:44,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:44,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:20:44,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:20:44,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:20:44,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 19:20:44,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:20:44,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881658596] [2020-10-12 19:20:44,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:20:44,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:20:44,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346558482] [2020-10-12 19:20:44,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:20:44,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:20:44,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:20:44,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:20:44,430 INFO L87 Difference]: Start difference. First operand 286156 states and 469550 transitions. Second operand 7 states. [2020-10-12 19:20:44,839 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 256