/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_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:59:54,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:59:54,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:59:54,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:59:54,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:59:54,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:59:54,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:59:54,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:59:54,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:59:54,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:59:54,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:59:54,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:59:54,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:59:54,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:59:54,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:59:54,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:59:54,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:59:54,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:59:54,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:59:54,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:59:54,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:59:54,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:59:54,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:59:54,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:59:54,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:59:54,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:59:54,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:59:54,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:59:54,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:59:54,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:59:54,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:59:54,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:59:54,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:59:54,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:59:54,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:59:54,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:59:54,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:59:54,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:59:54,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:59:54,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:59:54,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:59:54,977 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 19:59:55,014 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:59:55,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:59:55,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:59:55,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:59:55,017 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:59:55,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:59:55,017 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:59:55,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:59:55,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:59:55,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:59:55,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:59:55,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:59:55,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:59:55,019 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:59:55,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:59:55,020 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:59:55,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:59:55,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:59:55,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:59:55,021 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:59:55,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:59:55,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:59:55,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:59:55,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:59:55,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:59:55,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:59:55,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:59:55,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:59:55,023 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:59:55,023 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 19:59:55,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:59:55,325 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:59:55,331 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:59:55,334 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:59:55,334 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:59:55,335 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:59:55,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a4719460/3397f19c0f76409d8b906939a16da34b/FLAG69c8d0d90 [2020-10-12 19:59:55,966 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:59:55,966 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:59:55,981 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a4719460/3397f19c0f76409d8b906939a16da34b/FLAG69c8d0d90 [2020-10-12 19:59:56,245 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a4719460/3397f19c0f76409d8b906939a16da34b [2020-10-12 19:59:56,255 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:59:56,257 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:59:56,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:59:56,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:59:56,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:59:56,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:59:56" (1/1) ... [2020-10-12 19:59:56,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20a9c366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:59:56, skipping insertion in model container [2020-10-12 19:59:56,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:59:56" (1/1) ... [2020-10-12 19:59:56,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:59:56,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:59:56,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:59:56,639 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:59:56,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:59:56,852 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:59:56,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:59:56 WrapperNode [2020-10-12 19:59:56,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:59:56,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:59:56,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:59:56,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:59:56,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:59:56" (1/1) ... [2020-10-12 19:59:56,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:59:56" (1/1) ... [2020-10-12 19:59:56,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:59:56" (1/1) ... [2020-10-12 19:59:56,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:59:56" (1/1) ... [2020-10-12 19:59:56,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:59:56" (1/1) ... [2020-10-12 19:59:56,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:59:56" (1/1) ... [2020-10-12 19:59:56,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:59:56" (1/1) ... [2020-10-12 19:59:56,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:59:56,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:59:56,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:59:56,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:59:56,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:59:56" (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 19:59:56,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:59:56,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:59:56,997 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:59:56,997 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:59:56,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:59:56,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:59:56,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:59:56,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:59:56,998 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:59:56,998 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:59:56,998 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:59:56,998 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:59:56,998 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:59:56,999 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:59:56,999 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:59:56,999 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:59:56,999 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:59:56,999 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:59:56,999 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:59:57,000 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:59:57,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:59:57,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:59:57,817 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:59:57,817 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:59:57,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:59:57 BoogieIcfgContainer [2020-10-12 19:59:57,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:59:57,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:59:57,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:59:57,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:59:57,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:59:56" (1/3) ... [2020-10-12 19:59:57,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e71f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:59:57, skipping insertion in model container [2020-10-12 19:59:57,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:59:56" (2/3) ... [2020-10-12 19:59:57,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e71f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:59:57, skipping insertion in model container [2020-10-12 19:59:57,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:59:57" (3/3) ... [2020-10-12 19:59:57,833 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:59:57,844 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:59:57,852 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:59:57,866 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:59:57,894 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:59:57,894 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:59:57,894 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:59:57,895 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:59:57,895 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:59:57,895 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:59:57,895 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:59:57,896 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:59:57,920 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states. [2020-10-12 19:59:57,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 19:59:57,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:59:57,932 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] [2020-10-12 19:59:57,933 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:59:57,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:59:57,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1219373074, now seen corresponding path program 1 times [2020-10-12 19:59:57,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:59:57,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826890136] [2020-10-12 19:59:57,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:59:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:59:58,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:58,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:59,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:00,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:00,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 20:00:00,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:00:00,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1922 [2020-10-12 20:00:00,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:00,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:00:00,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:00:00,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 20:00:00,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:00:00,506 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-12 20:00:00,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:00:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:00,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:00,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:00,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:00:00,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:00:00,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 20:00:00,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:00,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:00:00,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:00:00,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:00:00,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:00:00,554 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 20:00:00,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826890136] [2020-10-12 20:00:00,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:00:00,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 20:00:00,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325779942] [2020-10-12 20:00:00,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 20:00:00,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:00:00,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 20:00:00,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:00:00,584 INFO L87 Difference]: Start difference. First operand 184 states. Second operand 7 states. [2020-10-12 20:00:00,846 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 20:00:01,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:00:01,997 INFO L93 Difference]: Finished difference Result 649 states and 1044 transitions. [2020-10-12 20:00:01,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:00:01,999 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-12 20:00:02,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:00:02,019 INFO L225 Difference]: With dead ends: 649 [2020-10-12 20:00:02,019 INFO L226 Difference]: Without dead ends: 544 [2020-10-12 20:00:02,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:00:02,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-10-12 20:00:02,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 278. [2020-10-12 20:00:02,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-12 20:00:02,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 417 transitions. [2020-10-12 20:00:02,103 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 417 transitions. Word has length 68 [2020-10-12 20:00:02,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:00:02,104 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 417 transitions. [2020-10-12 20:00:02,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 20:00:02,105 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 417 transitions. [2020-10-12 20:00:02,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 20:00:02,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:00:02,108 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] [2020-10-12 20:00:02,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:00:02,108 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:00:02,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:00:02,109 INFO L82 PathProgramCache]: Analyzing trace with hash 575174767, now seen corresponding path program 1 times [2020-10-12 20:00:02,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:00:02,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283000400] [2020-10-12 20:00:02,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:00:02,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:02,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:02,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:02,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:02,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 20:00:02,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:00:02,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 768 [2020-10-12 20:00:02,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:02,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:00:02,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 20:00:02,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 20:00:02,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:00:03,163 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-12 20:00:03,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:00:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:03,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:03,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:03,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:00:03,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:00:03,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:00:03,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:03,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:00:03,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:00:03,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:00:03,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:00:03,214 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 20:00:03,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283000400] [2020-10-12 20:00:03,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:00:03,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 20:00:03,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915525663] [2020-10-12 20:00:03,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 20:00:03,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:00:03,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 20:00:03,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:00:03,218 INFO L87 Difference]: Start difference. First operand 278 states and 417 transitions. Second operand 7 states. [2020-10-12 20:00:04,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:00:04,527 INFO L93 Difference]: Finished difference Result 1016 states and 1569 transitions. [2020-10-12 20:00:04,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:00:04,528 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-10-12 20:00:04,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:00:04,537 INFO L225 Difference]: With dead ends: 1016 [2020-10-12 20:00:04,537 INFO L226 Difference]: Without dead ends: 804 [2020-10-12 20:00:04,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:00:04,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2020-10-12 20:00:04,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 798. [2020-10-12 20:00:04,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 798 states. [2020-10-12 20:00:04,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1222 transitions. [2020-10-12 20:00:04,633 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1222 transitions. Word has length 69 [2020-10-12 20:00:04,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:00:04,634 INFO L479 AbstractCegarLoop]: Abstraction has 798 states and 1222 transitions. [2020-10-12 20:00:04,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 20:00:04,634 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1222 transitions. [2020-10-12 20:00:04,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 20:00:04,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:00:04,645 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] [2020-10-12 20:00:04,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:00:04,646 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:00:04,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:00:04,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1320562713, now seen corresponding path program 1 times [2020-10-12 20:00:04,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:00:04,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950212154] [2020-10-12 20:00:04,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:00:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:04,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:04,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:05,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:05,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 20:00:05,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:00:05,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-10-12 20:00:05,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:05,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:00:05,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:00:05,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 20:00:05,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:00:05,453 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-12 20:00:05,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:00:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:05,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:05,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:05,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:00:05,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:00:05,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 20:00:05,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:05,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:00:05,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:00:05,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:00:05,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:00:05,524 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 20:00:05,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950212154] [2020-10-12 20:00:05,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:00:05,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:00:05,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636839934] [2020-10-12 20:00:05,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:00:05,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:00:05,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:00:05,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:00:05,531 INFO L87 Difference]: Start difference. First operand 798 states and 1222 transitions. Second operand 6 states. [2020-10-12 20:00:05,778 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 20:00:06,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:00:06,636 INFO L93 Difference]: Finished difference Result 2075 states and 3217 transitions. [2020-10-12 20:00:06,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:00:06,636 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-12 20:00:06,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:00:06,646 INFO L225 Difference]: With dead ends: 2075 [2020-10-12 20:00:06,646 INFO L226 Difference]: Without dead ends: 1354 [2020-10-12 20:00:06,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:00:06,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2020-10-12 20:00:06,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1352. [2020-10-12 20:00:06,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2020-10-12 20:00:06,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2078 transitions. [2020-10-12 20:00:06,801 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2078 transitions. Word has length 70 [2020-10-12 20:00:06,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:00:06,802 INFO L479 AbstractCegarLoop]: Abstraction has 1352 states and 2078 transitions. [2020-10-12 20:00:06,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:00:06,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2078 transitions. [2020-10-12 20:00:06,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 20:00:06,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:00:06,804 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] [2020-10-12 20:00:06,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:00:06,805 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:00:06,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:00:06,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1131059306, now seen corresponding path program 1 times [2020-10-12 20:00:06,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:00:06,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649612116] [2020-10-12 20:00:06,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:00:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:06,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:06,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:07,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:07,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 20:00:07,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:00:07,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-10-12 20:00:07,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:07,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:00:07,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:00:07,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 20:00:07,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:00:07,541 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-12 20:00:07,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:00:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:07,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:07,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:07,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:00:07,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:00:07,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 20:00:07,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:07,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:00:07,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:00:07,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:00:07,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:00:07,602 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 20:00:07,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649612116] [2020-10-12 20:00:07,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:00:07,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:00:07,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777133400] [2020-10-12 20:00:07,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:00:07,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:00:07,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:00:07,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:00:07,605 INFO L87 Difference]: Start difference. First operand 1352 states and 2078 transitions. Second operand 6 states. [2020-10-12 20:00:07,835 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 20:00:08,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:00:08,825 INFO L93 Difference]: Finished difference Result 3632 states and 5636 transitions. [2020-10-12 20:00:08,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:00:08,826 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-12 20:00:08,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:00:08,839 INFO L225 Difference]: With dead ends: 3632 [2020-10-12 20:00:08,839 INFO L226 Difference]: Without dead ends: 2384 [2020-10-12 20:00:08,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:00:08,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2020-10-12 20:00:09,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 2382. [2020-10-12 20:00:09,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2382 states. [2020-10-12 20:00:09,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3668 transitions. [2020-10-12 20:00:09,017 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 3668 transitions. Word has length 70 [2020-10-12 20:00:09,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:00:09,017 INFO L479 AbstractCegarLoop]: Abstraction has 2382 states and 3668 transitions. [2020-10-12 20:00:09,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:00:09,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 3668 transitions. [2020-10-12 20:00:09,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 20:00:09,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:00:09,020 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] [2020-10-12 20:00:09,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:00:09,020 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:00:09,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:00:09,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1034923064, now seen corresponding path program 1 times [2020-10-12 20:00:09,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:00:09,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603899961] [2020-10-12 20:00:09,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:00:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:09,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:09,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:09,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:09,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 20:00:09,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:00:09,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 656 [2020-10-12 20:00:09,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:09,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:00:09,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:00:09,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 20:00:09,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:00:09,936 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-12 20:00:09,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:00:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:09,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:09,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:09,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:00:09,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:00:09,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 20:00:09,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:09,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:00:09,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:00:09,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:00:09,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:00:09,983 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 20:00:09,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603899961] [2020-10-12 20:00:09,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:00:09,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:00:09,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368418931] [2020-10-12 20:00:09,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:00:09,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:00:09,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:00:09,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:00:09,987 INFO L87 Difference]: Start difference. First operand 2382 states and 3668 transitions. Second operand 6 states. [2020-10-12 20:00:10,128 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 20:00:11,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:00:11,152 INFO L93 Difference]: Finished difference Result 6852 states and 10584 transitions. [2020-10-12 20:00:11,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:00:11,153 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-12 20:00:11,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:00:11,175 INFO L225 Difference]: With dead ends: 6852 [2020-10-12 20:00:11,176 INFO L226 Difference]: Without dead ends: 4524 [2020-10-12 20:00:11,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:00:11,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4524 states. [2020-10-12 20:00:11,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4524 to 4522. [2020-10-12 20:00:11,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4522 states. [2020-10-12 20:00:11,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4522 states to 4522 states and 6929 transitions. [2020-10-12 20:00:11,494 INFO L78 Accepts]: Start accepts. Automaton has 4522 states and 6929 transitions. Word has length 70 [2020-10-12 20:00:11,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:00:11,495 INFO L479 AbstractCegarLoop]: Abstraction has 4522 states and 6929 transitions. [2020-10-12 20:00:11,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:00:11,495 INFO L276 IsEmpty]: Start isEmpty. Operand 4522 states and 6929 transitions. [2020-10-12 20:00:11,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 20:00:11,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:00:11,498 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] [2020-10-12 20:00:11,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:00:11,498 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:00:11,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:00:11,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1800846473, now seen corresponding path program 1 times [2020-10-12 20:00:11,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:00:11,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35618327] [2020-10-12 20:00:11,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:00:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:11,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:11,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:12,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:12,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 20:00:12,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:00:12,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 633 [2020-10-12 20:00:12,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:12,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:00:12,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:00:12,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:00:12,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:00:12,369 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-12 20:00:12,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:00:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:12,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:12,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:12,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:00:12,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:00:12,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 20:00:12,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:12,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:00:12,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:00:12,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:00:12,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:00:12,412 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 20:00:12,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35618327] [2020-10-12 20:00:12,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:00:12,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:00:12,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311423381] [2020-10-12 20:00:12,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:00:12,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:00:12,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:00:12,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:00:12,420 INFO L87 Difference]: Start difference. First operand 4522 states and 6929 transitions. Second operand 6 states. [2020-10-12 20:00:12,563 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 20:00:13,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:00:13,925 INFO L93 Difference]: Finished difference Result 13173 states and 20197 transitions. [2020-10-12 20:00:13,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:00:13,926 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-12 20:00:13,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:00:13,968 INFO L225 Difference]: With dead ends: 13173 [2020-10-12 20:00:13,968 INFO L226 Difference]: Without dead ends: 8689 [2020-10-12 20:00:13,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:00:13,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8689 states. [2020-10-12 20:00:14,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8689 to 8687. [2020-10-12 20:00:14,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8687 states. [2020-10-12 20:00:14,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8687 states to 8687 states and 13195 transitions. [2020-10-12 20:00:14,564 INFO L78 Accepts]: Start accepts. Automaton has 8687 states and 13195 transitions. Word has length 70 [2020-10-12 20:00:14,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:00:14,565 INFO L479 AbstractCegarLoop]: Abstraction has 8687 states and 13195 transitions. [2020-10-12 20:00:14,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:00:14,565 INFO L276 IsEmpty]: Start isEmpty. Operand 8687 states and 13195 transitions. [2020-10-12 20:00:14,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-12 20:00:14,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:00:14,569 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] [2020-10-12 20:00:14,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:00:14,570 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:00:14,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:00:14,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1214058458, now seen corresponding path program 1 times [2020-10-12 20:00:14,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:00:14,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314350305] [2020-10-12 20:00:14,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:00:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:14,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:14,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:14,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:16,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:16,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 20:00:16,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:00:16,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1472 [2020-10-12 20:00:16,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:16,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:00:16,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:00:16,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 20:00:16,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:00:16,510 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-12 20:00:16,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:00:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:16,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:16,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:16,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:00:16,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:00:16,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 20:00:16,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:16,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:00:16,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:00:16,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:00:16,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:00:16,589 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 20:00:16,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314350305] [2020-10-12 20:00:16,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:00:16,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:00:16,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572176036] [2020-10-12 20:00:16,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:00:16,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:00:16,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:00:16,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:00:16,593 INFO L87 Difference]: Start difference. First operand 8687 states and 13195 transitions. Second operand 11 states. [2020-10-12 20:00:16,986 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 20:00:24,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:00:24,456 INFO L93 Difference]: Finished difference Result 80890 states and 123500 transitions. [2020-10-12 20:00:24,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-12 20:00:24,456 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-10-12 20:00:24,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:00:24,704 INFO L225 Difference]: With dead ends: 80890 [2020-10-12 20:00:24,704 INFO L226 Difference]: Without dead ends: 76522 [2020-10-12 20:00:24,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=444, Invalid=1626, Unknown=0, NotChecked=0, Total=2070 [2020-10-12 20:00:24,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76522 states. [2020-10-12 20:00:26,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76522 to 8876. [2020-10-12 20:00:26,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8876 states. [2020-10-12 20:00:26,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8876 states to 8876 states and 13448 transitions. [2020-10-12 20:00:26,307 INFO L78 Accepts]: Start accepts. Automaton has 8876 states and 13448 transitions. Word has length 71 [2020-10-12 20:00:26,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:00:26,309 INFO L479 AbstractCegarLoop]: Abstraction has 8876 states and 13448 transitions. [2020-10-12 20:00:26,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:00:26,309 INFO L276 IsEmpty]: Start isEmpty. Operand 8876 states and 13448 transitions. [2020-10-12 20:00:26,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-12 20:00:26,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:00:26,314 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] [2020-10-12 20:00:26,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:00:26,314 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:00:26,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:00:26,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1831868550, now seen corresponding path program 1 times [2020-10-12 20:00:26,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:00:26,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435944106] [2020-10-12 20:00:26,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:00:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:26,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:26,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:26,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:28,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:28,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 20:00:28,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:00:28,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1928 [2020-10-12 20:00:28,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:28,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:00:28,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:00:28,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 20:00:28,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:00:28,594 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-12 20:00:28,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:00:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:28,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:28,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:28,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:00:28,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:00:28,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 20:00:28,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:28,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:00:28,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:00:28,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:00:28,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:00:28,641 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 20:00:28,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435944106] [2020-10-12 20:00:28,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:00:28,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:00:28,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815785351] [2020-10-12 20:00:28,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:00:28,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:00:28,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:00:28,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:00:28,644 INFO L87 Difference]: Start difference. First operand 8876 states and 13448 transitions. Second operand 11 states. [2020-10-12 20:00:28,826 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 20:00:34,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:00:34,115 INFO L93 Difference]: Finished difference Result 31036 states and 47004 transitions. [2020-10-12 20:00:34,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 20:00:34,115 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-10-12 20:00:34,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:00:34,176 INFO L225 Difference]: With dead ends: 31036 [2020-10-12 20:00:34,176 INFO L226 Difference]: Without dead ends: 28652 [2020-10-12 20:00:34,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2020-10-12 20:00:34,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28652 states. [2020-10-12 20:00:35,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28652 to 8823. [2020-10-12 20:00:35,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8823 states. [2020-10-12 20:00:35,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8823 states to 8823 states and 13366 transitions. [2020-10-12 20:00:35,061 INFO L78 Accepts]: Start accepts. Automaton has 8823 states and 13366 transitions. Word has length 71 [2020-10-12 20:00:35,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:00:35,061 INFO L479 AbstractCegarLoop]: Abstraction has 8823 states and 13366 transitions. [2020-10-12 20:00:35,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:00:35,061 INFO L276 IsEmpty]: Start isEmpty. Operand 8823 states and 13366 transitions. [2020-10-12 20:00:35,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-12 20:00:35,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:00:35,065 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] [2020-10-12 20:00:35,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:00:35,065 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:00:35,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:00:35,066 INFO L82 PathProgramCache]: Analyzing trace with hash 845051962, now seen corresponding path program 1 times [2020-10-12 20:00:35,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:00:35,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891505889] [2020-10-12 20:00:35,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:00:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:35,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:35,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:35,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:36,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:36,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 20:00:36,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:00:36,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1794 [2020-10-12 20:00:36,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:36,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:00:36,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:00:36,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 20:00:36,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:00:37,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:00:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:37,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:37,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:37,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:00:37,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:00:37,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:00:37,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:37,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:00:37,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:00:37,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:00:37,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:00:37,186 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 20:00:37,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891505889] [2020-10-12 20:00:37,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:00:37,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:00:37,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664511318] [2020-10-12 20:00:37,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:00:37,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:00:37,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:00:37,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:00:37,188 INFO L87 Difference]: Start difference. First operand 8823 states and 13366 transitions. Second operand 11 states. [2020-10-12 20:00:37,373 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 20:00:42,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:00:42,978 INFO L93 Difference]: Finished difference Result 41876 states and 63402 transitions. [2020-10-12 20:00:42,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 20:00:42,982 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-10-12 20:00:42,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:00:43,055 INFO L225 Difference]: With dead ends: 41876 [2020-10-12 20:00:43,056 INFO L226 Difference]: Without dead ends: 35481 [2020-10-12 20:00:43,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2020-10-12 20:00:43,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35481 states. [2020-10-12 20:00:44,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35481 to 8996. [2020-10-12 20:00:44,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8996 states. [2020-10-12 20:00:44,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8996 states to 8996 states and 13585 transitions. [2020-10-12 20:00:44,455 INFO L78 Accepts]: Start accepts. Automaton has 8996 states and 13585 transitions. Word has length 71 [2020-10-12 20:00:44,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:00:44,455 INFO L479 AbstractCegarLoop]: Abstraction has 8996 states and 13585 transitions. [2020-10-12 20:00:44,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:00:44,455 INFO L276 IsEmpty]: Start isEmpty. Operand 8996 states and 13585 transitions. [2020-10-12 20:00:44,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-12 20:00:44,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:00:44,459 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] [2020-10-12 20:00:44,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:00:44,460 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:00:44,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:00:44,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1887690598, now seen corresponding path program 1 times [2020-10-12 20:00:44,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:00:44,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399399885] [2020-10-12 20:00:44,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:00:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:44,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:44,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:44,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:45,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:45,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 20:00:45,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:00:45,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1460 [2020-10-12 20:00:45,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:45,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:00:45,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:00:45,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 20:00:45,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:00:46,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:00:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:46,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:46,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:46,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:00:46,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:00:46,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:00:46,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:46,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:00:46,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:00:46,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:00:46,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:00:46,241 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 20:00:46,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399399885] [2020-10-12 20:00:46,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:00:46,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:00:46,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198949232] [2020-10-12 20:00:46,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:00:46,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:00:46,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:00:46,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:00:46,244 INFO L87 Difference]: Start difference. First operand 8996 states and 13585 transitions. Second operand 11 states. [2020-10-12 20:00:46,414 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 20:00:57,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:00:57,200 INFO L93 Difference]: Finished difference Result 79803 states and 121453 transitions. [2020-10-12 20:00:57,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-12 20:00:57,200 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-10-12 20:00:57,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:00:57,303 INFO L225 Difference]: With dead ends: 79803 [2020-10-12 20:00:57,303 INFO L226 Difference]: Without dead ends: 71546 [2020-10-12 20:00:57,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=339, Invalid=1143, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 20:00:57,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71546 states. [2020-10-12 20:00:58,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71546 to 9118. [2020-10-12 20:00:58,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9118 states. [2020-10-12 20:00:58,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9118 states to 9118 states and 13717 transitions. [2020-10-12 20:00:58,877 INFO L78 Accepts]: Start accepts. Automaton has 9118 states and 13717 transitions. Word has length 71 [2020-10-12 20:00:58,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:00:58,877 INFO L479 AbstractCegarLoop]: Abstraction has 9118 states and 13717 transitions. [2020-10-12 20:00:58,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:00:58,878 INFO L276 IsEmpty]: Start isEmpty. Operand 9118 states and 13717 transitions. [2020-10-12 20:00:58,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 20:00:58,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:00:58,881 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] [2020-10-12 20:00:58,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:00:58,881 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:00:58,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:00:58,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1090733747, now seen corresponding path program 1 times [2020-10-12 20:00:58,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:00:58,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495145033] [2020-10-12 20:00:58,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:00:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:58,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:59,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:59,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 20:00:59,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:00:59,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-12 20:00:59,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:59,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:00:59,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-12 20:00:59,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 20:00:59,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:00:59,202 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-12 20:00:59,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:00:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:59,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:59,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:59,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:00:59,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:00:59,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:00:59,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:59,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:00:59,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:00:59,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:00:59,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:00:59,240 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 20:00:59,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495145033] [2020-10-12 20:00:59,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:00:59,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:00:59,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901134763] [2020-10-12 20:00:59,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:00:59,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:00:59,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:00:59,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:00:59,244 INFO L87 Difference]: Start difference. First operand 9118 states and 13717 transitions. Second operand 5 states. [2020-10-12 20:01:02,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:01:02,414 INFO L93 Difference]: Finished difference Result 17344 states and 26166 transitions. [2020-10-12 20:01:02,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:01:02,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-12 20:01:02,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:01:02,440 INFO L225 Difference]: With dead ends: 17344 [2020-10-12 20:01:02,441 INFO L226 Difference]: Without dead ends: 17342 [2020-10-12 20:01:02,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:01:02,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17342 states. [2020-10-12 20:01:03,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17342 to 9374. [2020-10-12 20:01:03,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9374 states. [2020-10-12 20:01:03,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9374 states to 9374 states and 13973 transitions. [2020-10-12 20:01:03,944 INFO L78 Accepts]: Start accepts. Automaton has 9374 states and 13973 transitions. Word has length 72 [2020-10-12 20:01:03,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:01:03,944 INFO L479 AbstractCegarLoop]: Abstraction has 9374 states and 13973 transitions. [2020-10-12 20:01:03,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:01:03,944 INFO L276 IsEmpty]: Start isEmpty. Operand 9374 states and 13973 transitions. [2020-10-12 20:01:03,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-12 20:01:03,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:01:03,948 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] [2020-10-12 20:01:03,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:01:03,948 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:01:03,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:01:03,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1609803374, now seen corresponding path program 1 times [2020-10-12 20:01:03,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:01:03,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771071830] [2020-10-12 20:01:03,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:01:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:03,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:04,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:04,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:05,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:05,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 20:01:05,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:01:05,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1686 [2020-10-12 20:01:05,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:05,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:01:05,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:01:05,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 20:01:05,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:06,089 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-12 20:01:06,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:01:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:06,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:06,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:06,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:01:06,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:01:06,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:01:06,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:06,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:01:06,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:01:06,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:01:06,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:01:06,139 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 20:01:06,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771071830] [2020-10-12 20:01:06,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:01:06,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:01:06,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047776273] [2020-10-12 20:01:06,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:01:06,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:01:06,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:01:06,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:01:06,147 INFO L87 Difference]: Start difference. First operand 9374 states and 13973 transitions. Second operand 10 states. [2020-10-12 20:01:06,381 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 20:01:13,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:01:13,158 INFO L93 Difference]: Finished difference Result 38607 states and 58056 transitions. [2020-10-12 20:01:13,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 20:01:13,159 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-10-12 20:01:13,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:01:13,193 INFO L225 Difference]: With dead ends: 38607 [2020-10-12 20:01:13,194 INFO L226 Difference]: Without dead ends: 29724 [2020-10-12 20:01:13,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-12 20:01:13,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29724 states. [2020-10-12 20:01:15,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29724 to 13379. [2020-10-12 20:01:15,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13379 states. [2020-10-12 20:01:15,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13379 states to 13379 states and 20020 transitions. [2020-10-12 20:01:15,077 INFO L78 Accepts]: Start accepts. Automaton has 13379 states and 20020 transitions. Word has length 73 [2020-10-12 20:01:15,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:01:15,078 INFO L479 AbstractCegarLoop]: Abstraction has 13379 states and 20020 transitions. [2020-10-12 20:01:15,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:01:15,078 INFO L276 IsEmpty]: Start isEmpty. Operand 13379 states and 20020 transitions. [2020-10-12 20:01:15,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-12 20:01:15,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:01:15,082 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] [2020-10-12 20:01:15,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:01:15,082 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:01:15,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:01:15,083 INFO L82 PathProgramCache]: Analyzing trace with hash 825446009, now seen corresponding path program 1 times [2020-10-12 20:01:15,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:01:15,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506260695] [2020-10-12 20:01:15,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:01:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:15,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:15,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:15,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 20:01:15,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:01:15,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-12 20:01:15,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:15,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:01:15,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 20:01:15,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 20:01:15,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:15,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:01:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:15,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:15,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:15,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:01:15,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:01:15,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:01:15,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:15,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:01:15,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:01:15,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:01:15,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:15,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:01:15,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506260695] [2020-10-12 20:01:15,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:01:15,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:01:15,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865607250] [2020-10-12 20:01:15,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:01:15,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:01:15,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:01:15,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:01:15,411 INFO L87 Difference]: Start difference. First operand 13379 states and 20020 transitions. Second operand 5 states. [2020-10-12 20:01:15,606 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 20:01:19,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:01:19,866 INFO L93 Difference]: Finished difference Result 35827 states and 53694 transitions. [2020-10-12 20:01:19,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:01:19,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-12 20:01:19,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:01:19,894 INFO L225 Difference]: With dead ends: 35827 [2020-10-12 20:01:19,894 INFO L226 Difference]: Without dead ends: 23641 [2020-10-12 20:01:19,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:01:19,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23641 states. [2020-10-12 20:01:23,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23641 to 23459. [2020-10-12 20:01:23,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23459 states. [2020-10-12 20:01:23,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23459 states to 23459 states and 34728 transitions. [2020-10-12 20:01:23,509 INFO L78 Accepts]: Start accepts. Automaton has 23459 states and 34728 transitions. Word has length 73 [2020-10-12 20:01:23,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:01:23,509 INFO L479 AbstractCegarLoop]: Abstraction has 23459 states and 34728 transitions. [2020-10-12 20:01:23,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:01:23,509 INFO L276 IsEmpty]: Start isEmpty. Operand 23459 states and 34728 transitions. [2020-10-12 20:01:23,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-12 20:01:23,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:01:23,513 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] [2020-10-12 20:01:23,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:01:23,513 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:01:23,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:01:23,514 INFO L82 PathProgramCache]: Analyzing trace with hash 166442356, now seen corresponding path program 1 times [2020-10-12 20:01:23,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:01:23,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154710780] [2020-10-12 20:01:23,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:01:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:23,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:23,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:23,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:25,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:25,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 20:01:25,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:01:25,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1498 [2020-10-12 20:01:25,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:25,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:01:25,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:01:25,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 20:01:25,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:25,337 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-12 20:01:25,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:01:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:25,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:25,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:25,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:01:25,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:01:25,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:01:25,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:25,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:01:25,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:01:25,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:01:25,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:25,362 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 20:01:25,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154710780] [2020-10-12 20:01:25,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:01:25,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:01:25,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60766582] [2020-10-12 20:01:25,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:01:25,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:01:25,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:01:25,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:01:25,364 INFO L87 Difference]: Start difference. First operand 23459 states and 34728 transitions. Second operand 10 states. [2020-10-12 20:01:25,507 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 20:01:39,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:01:39,451 INFO L93 Difference]: Finished difference Result 98483 states and 146291 transitions. [2020-10-12 20:01:39,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 20:01:39,451 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-10-12 20:01:39,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:01:39,544 INFO L225 Difference]: With dead ends: 98483 [2020-10-12 20:01:39,545 INFO L226 Difference]: Without dead ends: 75377 [2020-10-12 20:01:39,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-12 20:01:39,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75377 states. [2020-10-12 20:01:44,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75377 to 30617. [2020-10-12 20:01:44,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30617 states. [2020-10-12 20:01:44,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30617 states to 30617 states and 45328 transitions. [2020-10-12 20:01:44,549 INFO L78 Accepts]: Start accepts. Automaton has 30617 states and 45328 transitions. Word has length 73 [2020-10-12 20:01:44,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:01:44,549 INFO L479 AbstractCegarLoop]: Abstraction has 30617 states and 45328 transitions. [2020-10-12 20:01:44,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:01:44,549 INFO L276 IsEmpty]: Start isEmpty. Operand 30617 states and 45328 transitions. [2020-10-12 20:01:44,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-12 20:01:44,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:01:44,553 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] [2020-10-12 20:01:44,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:01:44,553 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:01:44,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:01:44,553 INFO L82 PathProgramCache]: Analyzing trace with hash 168815092, now seen corresponding path program 1 times [2020-10-12 20:01:44,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:01:44,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038549857] [2020-10-12 20:01:44,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:01:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:44,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:44,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:44,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:45,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:45,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 20:01:45,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:01:45,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1208 [2020-10-12 20:01:45,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:45,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:01:45,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:01:45,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 20:01:45,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:46,239 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-12 20:01:46,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:01:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:46,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:46,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:46,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:01:46,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:01:46,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:01:46,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:46,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:01:46,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:01:46,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:01:46,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:46,295 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 20:01:46,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038549857] [2020-10-12 20:01:46,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:01:46,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:01:46,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803660204] [2020-10-12 20:01:46,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:01:46,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:01:46,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:01:46,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:01:46,297 INFO L87 Difference]: Start difference. First operand 30617 states and 45328 transitions. Second operand 10 states. [2020-10-12 20:01:46,470 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 20:02:22,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:02:22,187 INFO L93 Difference]: Finished difference Result 198705 states and 295592 transitions. [2020-10-12 20:02:22,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 20:02:22,188 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-10-12 20:02:22,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:02:22,464 INFO L225 Difference]: With dead ends: 198705 [2020-10-12 20:02:22,464 INFO L226 Difference]: Without dead ends: 190883 [2020-10-12 20:02:22,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2020-10-12 20:02:22,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190883 states. [2020-10-12 20:02:29,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190883 to 30678. [2020-10-12 20:02:29,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30678 states. [2020-10-12 20:02:29,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30678 states to 30678 states and 45430 transitions. [2020-10-12 20:02:29,056 INFO L78 Accepts]: Start accepts. Automaton has 30678 states and 45430 transitions. Word has length 73 [2020-10-12 20:02:29,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:02:29,056 INFO L479 AbstractCegarLoop]: Abstraction has 30678 states and 45430 transitions. [2020-10-12 20:02:29,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:02:29,056 INFO L276 IsEmpty]: Start isEmpty. Operand 30678 states and 45430 transitions. [2020-10-12 20:02:29,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-12 20:02:29,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:02:29,060 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] [2020-10-12 20:02:29,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:02:29,060 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:02:29,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:02:29,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1652397586, now seen corresponding path program 1 times [2020-10-12 20:02:29,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:02:29,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338964650] [2020-10-12 20:02:29,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:02:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:02:29,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:29,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:29,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:30,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:30,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 20:02:30,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:02:30,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-10-12 20:02:30,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:30,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:02:30,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:02:30,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 20:02:30,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:02:30,576 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-12 20:02:30,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:02:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:02:30,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:30,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:30,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:02:30,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:02:30,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:02:30,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:30,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:02:30,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:02:30,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:02:30,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:02:30,622 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 20:02:30,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338964650] [2020-10-12 20:02:30,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:02:30,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:02:30,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092504770] [2020-10-12 20:02:30,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:02:30,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:02:30,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:02:30,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:02:30,631 INFO L87 Difference]: Start difference. First operand 30678 states and 45430 transitions. Second operand 10 states. [2020-10-12 20:02:30,815 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-12 20:03:19,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:03:19,293 INFO L93 Difference]: Finished difference Result 230375 states and 342423 transitions. [2020-10-12 20:03:19,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 20:03:19,294 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-10-12 20:03:19,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:03:19,612 INFO L225 Difference]: With dead ends: 230375 [2020-10-12 20:03:19,612 INFO L226 Difference]: Without dead ends: 218469 [2020-10-12 20:03:19,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2020-10-12 20:03:19,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218469 states. [2020-10-12 20:03:29,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218469 to 30705. [2020-10-12 20:03:29,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30705 states. [2020-10-12 20:03:29,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30705 states to 30705 states and 45474 transitions. [2020-10-12 20:03:29,800 INFO L78 Accepts]: Start accepts. Automaton has 30705 states and 45474 transitions. Word has length 73 [2020-10-12 20:03:29,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:03:29,800 INFO L479 AbstractCegarLoop]: Abstraction has 30705 states and 45474 transitions. [2020-10-12 20:03:29,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:03:29,800 INFO L276 IsEmpty]: Start isEmpty. Operand 30705 states and 45474 transitions. [2020-10-12 20:03:29,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-12 20:03:29,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:03:29,803 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] [2020-10-12 20:03:29,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:03:29,804 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:03:29,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:03:29,804 INFO L82 PathProgramCache]: Analyzing trace with hash 2029894335, now seen corresponding path program 1 times [2020-10-12 20:03:29,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:03:29,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908223773] [2020-10-12 20:03:29,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:03:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:03:29,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:29,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:29,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:30,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:31,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:03:31,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 20:03:31,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:03:31,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1578 [2020-10-12 20:03:31,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:03:31,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:03:31,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:03:31,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 20:03:31,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:03:31,674 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-12 20:03:31,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:03:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:03:31,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:31,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:03:31,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:03:31,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:03:31,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:03:31,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:03:31,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:03:31,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:03:31,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:03:31,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:03:31,710 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 20:03:31,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908223773] [2020-10-12 20:03:31,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:03:31,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 20:03:31,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453857431] [2020-10-12 20:03:31,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:03:31,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:03:31,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:03:31,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:03:31,712 INFO L87 Difference]: Start difference. First operand 30705 states and 45474 transitions. Second operand 8 states. [2020-10-12 20:03:31,866 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 20:03:46,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:03:46,385 INFO L93 Difference]: Finished difference Result 82766 states and 122289 transitions. [2020-10-12 20:03:46,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 20:03:46,386 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-10-12 20:03:46,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:03:46,445 INFO L225 Difference]: With dead ends: 82766 [2020-10-12 20:03:46,446 INFO L226 Difference]: Without dead ends: 52703 [2020-10-12 20:03:46,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:03:46,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52703 states.