/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:14:20,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:14:20,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:14:20,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:14:20,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:14:20,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:14:20,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:14:20,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:14:20,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:14:20,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:14:20,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:14:20,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:14:20,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:14:20,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:14:20,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:14:20,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:14:20,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:14:20,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:14:20,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:14:20,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:14:20,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:14:20,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:14:20,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:14:20,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:14:20,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:14:20,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:14:20,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:14:20,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:14:20,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:14:20,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:14:20,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:14:20,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:14:20,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:14:20,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:14:20,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:14:20,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:14:20,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:14:20,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:14:20,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:14:20,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:14:20,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:14:20,455 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 19:14:20,496 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:14:20,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:14:20,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:14:20,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:14:20,498 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:14:20,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:14:20,499 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:14:20,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:14:20,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:14:20,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:14:20,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:14:20,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:14:20,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:14:20,501 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:14:20,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:14:20,502 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:14:20,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:14:20,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:14:20,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:14:20,503 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:14:20,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:14:20,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:14:20,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:14:20,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:14:20,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:14:20,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:14:20,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:14:20,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:14:20,505 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:14:20,505 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 19:14:20,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:14:20,825 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:14:20,830 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:14:20,831 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:14:20,832 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:14:20,833 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 19:14:20,918 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cae0935a9/b10666b873ce4fb8846066ccd97eabaa/FLAGda9b5df59 [2020-10-12 19:14:21,600 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:14:21,601 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 19:14:21,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cae0935a9/b10666b873ce4fb8846066ccd97eabaa/FLAGda9b5df59 [2020-10-12 19:14:21,778 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cae0935a9/b10666b873ce4fb8846066ccd97eabaa [2020-10-12 19:14:21,786 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:14:21,788 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:14:21,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:14:21,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:14:21,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:14:21,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:14:21" (1/1) ... [2020-10-12 19:14:21,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b2f3aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:14:21, skipping insertion in model container [2020-10-12 19:14:21,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:14:21" (1/1) ... [2020-10-12 19:14:21,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:14:21,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:14:22,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:14:22,533 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:14:23,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:14:23,038 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:14:23,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:14:23 WrapperNode [2020-10-12 19:14:23,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:14:23,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:14:23,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:14:23,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:14:23,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:14:23" (1/1) ... [2020-10-12 19:14:23,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:14:23" (1/1) ... [2020-10-12 19:14:23,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:14:23" (1/1) ... [2020-10-12 19:14:23,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:14:23" (1/1) ... [2020-10-12 19:14:23,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:14:23" (1/1) ... [2020-10-12 19:14:23,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:14:23" (1/1) ... [2020-10-12 19:14:23,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:14:23" (1/1) ... [2020-10-12 19:14:23,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:14:23,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:14:23,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:14:23,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:14:23,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:14:23" (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 19:14:23,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:14:23,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:14:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:14:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:14:23,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:14:23,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:14:23,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:14:23,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:14:23,261 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:14:23,261 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:14:23,261 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:14:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:14:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:14:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:14:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:14:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:14:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:14:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:14:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:14:23,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:14:23,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:14:24,984 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:14:24,985 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:14:24,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:14:24 BoogieIcfgContainer [2020-10-12 19:14:24,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:14:25,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:14:25,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:14:25,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:14:25,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:14:21" (1/3) ... [2020-10-12 19:14:25,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79707106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:14:25, skipping insertion in model container [2020-10-12 19:14:25,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:14:23" (2/3) ... [2020-10-12 19:14:25,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79707106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:14:25, skipping insertion in model container [2020-10-12 19:14:25,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:14:24" (3/3) ... [2020-10-12 19:14:25,014 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 19:14:25,027 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:14:25,048 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-12 19:14:25,068 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-12 19:14:25,112 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:14:25,112 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:14:25,112 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:14:25,113 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:14:25,113 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:14:25,113 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:14:25,113 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:14:25,113 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:14:25,157 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states. [2020-10-12 19:14:25,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-12 19:14:25,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:25,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:14:25,198 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:25,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:25,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1760839587, now seen corresponding path program 1 times [2020-10-12 19:14:25,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:25,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077450727] [2020-10-12 19:14:25,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:25,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:26,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:26,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:26,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:26,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:26,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:26,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:27,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:27,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:27,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:28,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:28,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:30,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:30,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-12 19:14:30,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:14:30,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 19:14:30,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:30,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:14:30,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:14:30,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 19:14:30,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:14:31,405 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:14:31,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:31,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:31,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:31,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:31,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:31,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:14:31,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:31,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:14:31,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:31,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:14:31,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:14:31,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:14:31,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077450727] [2020-10-12 19:14:31,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:14:31,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:14:31,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776752731] [2020-10-12 19:14:31,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:14:31,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:14:31,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:14:31,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:14:31,524 INFO L87 Difference]: Start difference. First operand 393 states. Second operand 5 states. [2020-10-12 19:14:36,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:14:36,155 INFO L93 Difference]: Finished difference Result 1124 states and 2019 transitions. [2020-10-12 19:14:36,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:14:36,162 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-12 19:14:36,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:14:36,188 INFO L225 Difference]: With dead ends: 1124 [2020-10-12 19:14:36,188 INFO L226 Difference]: Without dead ends: 752 [2020-10-12 19:14:36,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:14:36,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2020-10-12 19:14:36,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 726. [2020-10-12 19:14:36,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 726 states. [2020-10-12 19:14:36,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1036 transitions. [2020-10-12 19:14:36,315 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1036 transitions. Word has length 145 [2020-10-12 19:14:36,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:36,316 INFO L479 AbstractCegarLoop]: Abstraction has 726 states and 1036 transitions. [2020-10-12 19:14:36,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:14:36,317 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1036 transitions. [2020-10-12 19:14:36,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-12 19:14:36,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:36,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:14:36,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:14:36,321 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:36,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:36,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1594631139, now seen corresponding path program 1 times [2020-10-12 19:14:36,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:36,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104530614] [2020-10-12 19:14:36,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:36,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:36,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:36,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:36,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:36,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:36,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:36,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:37,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:37,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:38,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:41,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:41,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 19:14:41,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:14:41,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-12 19:14:41,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:41,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:14:41,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:14:41,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 19:14:41,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:41,922 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:14:41,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:41,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:41,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:41,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:41,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:41,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:14:41,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:41,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:14:41,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:41,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:14:41,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:14:42,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:14:42,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104530614] [2020-10-12 19:14:42,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:14:42,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:14:42,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527756993] [2020-10-12 19:14:42,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:14:42,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:14:42,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:14:42,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:14:42,025 INFO L87 Difference]: Start difference. First operand 726 states and 1036 transitions. Second operand 5 states. [2020-10-12 19:14:45,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:14:45,587 INFO L93 Difference]: Finished difference Result 1970 states and 2813 transitions. [2020-10-12 19:14:45,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:14:45,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-12 19:14:45,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:14:45,597 INFO L225 Difference]: With dead ends: 1970 [2020-10-12 19:14:45,597 INFO L226 Difference]: Without dead ends: 1396 [2020-10-12 19:14:45,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:14:45,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2020-10-12 19:14:45,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 1376. [2020-10-12 19:14:45,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1376 states. [2020-10-12 19:14:45,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1948 transitions. [2020-10-12 19:14:45,710 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1948 transitions. Word has length 146 [2020-10-12 19:14:45,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:45,710 INFO L479 AbstractCegarLoop]: Abstraction has 1376 states and 1948 transitions. [2020-10-12 19:14:45,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:14:45,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1948 transitions. [2020-10-12 19:14:45,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-12 19:14:45,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:45,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:14:45,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:14:45,715 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:45,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:45,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1549239226, now seen corresponding path program 1 times [2020-10-12 19:14:45,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:45,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523366210] [2020-10-12 19:14:45,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:45,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:45,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:45,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:45,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:46,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:46,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:46,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:46,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:46,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:49,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:49,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:50,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:50,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:50,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:50,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-12 19:14:50,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:14:50,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 19:14:50,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:50,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:14:50,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:14:50,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 19:14:50,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:14:51,150 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:14:51,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:14:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:51,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:51,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:14:51,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:14:51,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:14:51,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 19:14:51,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:14:51,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:14:51,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:14:51,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:14:51,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:14:51,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:14:51,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523366210] [2020-10-12 19:14:51,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:14:51,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:14:51,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121140674] [2020-10-12 19:14:51,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:14:51,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:14:51,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:14:51,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:14:51,266 INFO L87 Difference]: Start difference. First operand 1376 states and 1948 transitions. Second operand 5 states. [2020-10-12 19:14:54,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:14:54,902 INFO L93 Difference]: Finished difference Result 3954 states and 5559 transitions. [2020-10-12 19:14:54,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:14:54,903 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-12 19:14:54,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:14:54,918 INFO L225 Difference]: With dead ends: 3954 [2020-10-12 19:14:54,918 INFO L226 Difference]: Without dead ends: 2641 [2020-10-12 19:14:54,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:14:54,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2020-10-12 19:14:55,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 2610. [2020-10-12 19:14:55,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2610 states. [2020-10-12 19:14:55,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2610 states to 2610 states and 3652 transitions. [2020-10-12 19:14:55,080 INFO L78 Accepts]: Start accepts. Automaton has 2610 states and 3652 transitions. Word has length 147 [2020-10-12 19:14:55,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:14:55,081 INFO L479 AbstractCegarLoop]: Abstraction has 2610 states and 3652 transitions. [2020-10-12 19:14:55,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:14:55,082 INFO L276 IsEmpty]: Start isEmpty. Operand 2610 states and 3652 transitions. [2020-10-12 19:14:55,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-12 19:14:55,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:14:55,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:14:55,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:14:55,093 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:14:55,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:14:55,094 INFO L82 PathProgramCache]: Analyzing trace with hash 185219164, now seen corresponding path program 1 times [2020-10-12 19:14:55,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:14:55,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355213424] [2020-10-12 19:14:55,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:14:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:14:55,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:55,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:55,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:55,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:55,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:55,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:55,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:56,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:59,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:59,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:59,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:14:59,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:00,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:00,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-12 19:15:00,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:15:00,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:15:00,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:00,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:15:00,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:15:00,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 19:15:00,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:00,481 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:15:00,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:15:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:00,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:00,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:00,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:15:00,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:15:00,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 19:15:00,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:00,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:15:00,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:15:00,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:15:00,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:15:00,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:15:00,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355213424] [2020-10-12 19:15:00,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:15:00,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:15:00,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235194482] [2020-10-12 19:15:00,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:15:00,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:15:00,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:15:00,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:15:00,583 INFO L87 Difference]: Start difference. First operand 2610 states and 3652 transitions. Second operand 5 states. [2020-10-12 19:15:04,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:15:04,160 INFO L93 Difference]: Finished difference Result 7585 states and 10561 transitions. [2020-10-12 19:15:04,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:15:04,161 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-12 19:15:04,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:15:04,184 INFO L225 Difference]: With dead ends: 7585 [2020-10-12 19:15:04,185 INFO L226 Difference]: Without dead ends: 5058 [2020-10-12 19:15:04,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:15:04,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5058 states. [2020-10-12 19:15:04,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5058 to 5027. [2020-10-12 19:15:04,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5027 states. [2020-10-12 19:15:04,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5027 states to 5027 states and 6957 transitions. [2020-10-12 19:15:04,530 INFO L78 Accepts]: Start accepts. Automaton has 5027 states and 6957 transitions. Word has length 148 [2020-10-12 19:15:04,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:15:04,531 INFO L479 AbstractCegarLoop]: Abstraction has 5027 states and 6957 transitions. [2020-10-12 19:15:04,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:15:04,531 INFO L276 IsEmpty]: Start isEmpty. Operand 5027 states and 6957 transitions. [2020-10-12 19:15:04,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-12 19:15:04,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:15:04,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:04,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:15:04,540 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:15:04,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:15:04,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1370020762, now seen corresponding path program 1 times [2020-10-12 19:15:04,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:15:04,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31796590] [2020-10-12 19:15:04,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:15:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:04,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:04,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:04,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:04,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:04,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:04,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:05,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:06,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:08,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:08,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:08,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:09,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:09,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-12 19:15:09,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:15:09,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 19:15:09,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:09,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:15:09,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:15:09,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 19:15:09,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:09,896 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:15:09,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:15:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:09,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:09,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:09,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:15:09,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:15:09,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:15:09,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:09,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:15:09,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:15:09,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:15:09,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:09,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:15:09,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31796590] [2020-10-12 19:15:09,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:15:09,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:15:09,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155236725] [2020-10-12 19:15:09,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:15:09,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:15:09,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:15:09,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:15:09,981 INFO L87 Difference]: Start difference. First operand 5027 states and 6957 transitions. Second operand 5 states. [2020-10-12 19:15:13,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:15:13,425 INFO L93 Difference]: Finished difference Result 14665 states and 20206 transitions. [2020-10-12 19:15:13,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:15:13,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-12 19:15:13,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:15:13,468 INFO L225 Difference]: With dead ends: 14665 [2020-10-12 19:15:13,469 INFO L226 Difference]: Without dead ends: 9754 [2020-10-12 19:15:13,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:15:13,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9754 states. [2020-10-12 19:15:14,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9754 to 9723. [2020-10-12 19:15:14,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9723 states. [2020-10-12 19:15:14,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9723 states to 9723 states and 13264 transitions. [2020-10-12 19:15:14,072 INFO L78 Accepts]: Start accepts. Automaton has 9723 states and 13264 transitions. Word has length 149 [2020-10-12 19:15:14,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:15:14,073 INFO L479 AbstractCegarLoop]: Abstraction has 9723 states and 13264 transitions. [2020-10-12 19:15:14,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:15:14,073 INFO L276 IsEmpty]: Start isEmpty. Operand 9723 states and 13264 transitions. [2020-10-12 19:15:14,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-12 19:15:14,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:15:14,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:14,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:15:14,089 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:15:14,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:15:14,090 INFO L82 PathProgramCache]: Analyzing trace with hash -155365157, now seen corresponding path program 1 times [2020-10-12 19:15:14,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:15:14,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129278578] [2020-10-12 19:15:14,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:15:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:14,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:14,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:14,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:14,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:14,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:14,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:14,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:19,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:19,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-12 19:15:19,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:15:19,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:15:19,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:19,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:15:19,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 19:15:19,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 19:15:19,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:19,389 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:15:19,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:15:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:19,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:19,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:19,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:15:19,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:15:19,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:15:19,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:19,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:15:19,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:15:19,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:15:19,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:15:19,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129278578] [2020-10-12 19:15:19,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:15:19,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:15:19,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388577124] [2020-10-12 19:15:19,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:15:19,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:15:19,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:15:19,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:15:19,439 INFO L87 Difference]: Start difference. First operand 9723 states and 13264 transitions. Second operand 5 states. [2020-10-12 19:15:21,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:15:21,456 INFO L93 Difference]: Finished difference Result 14794 states and 20353 transitions. [2020-10-12 19:15:21,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:15:21,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-12 19:15:21,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:15:21,498 INFO L225 Difference]: With dead ends: 14794 [2020-10-12 19:15:21,498 INFO L226 Difference]: Without dead ends: 6347 [2020-10-12 19:15:21,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:15:21,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6347 states. [2020-10-12 19:15:21,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6347 to 6331. [2020-10-12 19:15:21,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-10-12 19:15:21,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 8612 transitions. [2020-10-12 19:15:21,896 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 8612 transitions. Word has length 150 [2020-10-12 19:15:21,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:15:21,896 INFO L479 AbstractCegarLoop]: Abstraction has 6331 states and 8612 transitions. [2020-10-12 19:15:21,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:15:21,896 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 8612 transitions. [2020-10-12 19:15:21,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-12 19:15:21,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:15:21,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:21,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:15:21,916 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:15:21,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:15:21,916 INFO L82 PathProgramCache]: Analyzing trace with hash 771363724, now seen corresponding path program 1 times [2020-10-12 19:15:21,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:15:21,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081865000] [2020-10-12 19:15:21,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:15:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:21,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:21,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:22,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:22,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:22,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:22,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:22,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:22,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:26,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:26,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-12 19:15:26,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:15:26,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 19:15:26,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:26,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:15:26,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:15:26,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 19:15:26,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:27,239 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:15:27,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:15:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:27,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:27,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:27,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:15:27,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:15:27,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:15:27,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:27,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:15:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:15:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:15:27,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:27,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:15:27,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081865000] [2020-10-12 19:15:27,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:15:27,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:15:27,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095329915] [2020-10-12 19:15:27,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:15:27,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:15:27,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:15:27,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:15:27,275 INFO L87 Difference]: Start difference. First operand 6331 states and 8612 transitions. Second operand 5 states. [2020-10-12 19:15:27,535 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-12 19:15:30,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:15:30,931 INFO L93 Difference]: Finished difference Result 11353 states and 15429 transitions. [2020-10-12 19:15:30,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:15:30,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-12 19:15:30,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:15:30,946 INFO L225 Difference]: With dead ends: 11353 [2020-10-12 19:15:30,947 INFO L226 Difference]: Without dead ends: 6458 [2020-10-12 19:15:30,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:15:30,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6458 states. [2020-10-12 19:15:31,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6458 to 6368. [2020-10-12 19:15:31,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6368 states. [2020-10-12 19:15:31,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6368 states to 6368 states and 8638 transitions. [2020-10-12 19:15:31,281 INFO L78 Accepts]: Start accepts. Automaton has 6368 states and 8638 transitions. Word has length 157 [2020-10-12 19:15:31,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:15:31,282 INFO L479 AbstractCegarLoop]: Abstraction has 6368 states and 8638 transitions. [2020-10-12 19:15:31,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:15:31,282 INFO L276 IsEmpty]: Start isEmpty. Operand 6368 states and 8638 transitions. [2020-10-12 19:15:31,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-12 19:15:31,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:15:31,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:31,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:15:31,291 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:15:31,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:15:31,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1385963915, now seen corresponding path program 1 times [2020-10-12 19:15:31,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:15:31,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750666965] [2020-10-12 19:15:31,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:15:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:31,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:31,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:31,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:31,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:31,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:31,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:36,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:36,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 19:15:36,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:15:36,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 19:15:36,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:36,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:15:36,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 19:15:36,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 19:15:36,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 19:15:36,629 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:15:36,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:15:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:36,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:36,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:36,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:15:36,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:15:36,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:15:36,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:36,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:15:36,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:15:36,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:15:36,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:36,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:15:36,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750666965] [2020-10-12 19:15:36,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:15:36,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:15:36,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77289755] [2020-10-12 19:15:36,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:15:36,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:15:36,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:15:36,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:15:36,683 INFO L87 Difference]: Start difference. First operand 6368 states and 8638 transitions. Second operand 5 states. [2020-10-12 19:15:38,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:15:38,584 INFO L93 Difference]: Finished difference Result 12537 states and 16976 transitions. [2020-10-12 19:15:38,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:15:38,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-12 19:15:38,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:15:38,599 INFO L225 Difference]: With dead ends: 12537 [2020-10-12 19:15:38,599 INFO L226 Difference]: Without dead ends: 6277 [2020-10-12 19:15:38,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:15:38,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6277 states. [2020-10-12 19:15:38,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6277 to 6277. [2020-10-12 19:15:38,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6277 states. [2020-10-12 19:15:38,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6277 states to 6277 states and 8492 transitions. [2020-10-12 19:15:38,995 INFO L78 Accepts]: Start accepts. Automaton has 6277 states and 8492 transitions. Word has length 158 [2020-10-12 19:15:38,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:15:38,995 INFO L479 AbstractCegarLoop]: Abstraction has 6277 states and 8492 transitions. [2020-10-12 19:15:38,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:15:38,996 INFO L276 IsEmpty]: Start isEmpty. Operand 6277 states and 8492 transitions. [2020-10-12 19:15:39,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-12 19:15:39,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:15:39,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:39,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:15:39,004 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:15:39,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:15:39,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1405714881, now seen corresponding path program 1 times [2020-10-12 19:15:39,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:15:39,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045388622] [2020-10-12 19:15:39,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:15:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:39,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:39,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:39,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:39,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:39,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:39,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:39,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:39,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:39,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:39,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:44,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:44,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-12 19:15:44,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:15:44,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 19:15:44,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:15:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 19:15:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 19:15:44,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:15:44,389 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:15:44,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:15:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:44,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:44,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:44,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:15:44,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:15:44,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:15:44,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:44,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:15:44,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:15:44,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:15:44,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:44,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:15:44,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045388622] [2020-10-12 19:15:44,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:15:44,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:15:44,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338102626] [2020-10-12 19:15:44,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:15:44,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:15:44,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:15:44,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:15:44,426 INFO L87 Difference]: Start difference. First operand 6277 states and 8492 transitions. Second operand 5 states. [2020-10-12 19:15:46,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:15:46,294 INFO L93 Difference]: Finished difference Result 11011 states and 14859 transitions. [2020-10-12 19:15:46,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:15:46,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-12 19:15:46,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:15:46,308 INFO L225 Difference]: With dead ends: 11011 [2020-10-12 19:15:46,309 INFO L226 Difference]: Without dead ends: 4820 [2020-10-12 19:15:46,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:15:46,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4820 states. [2020-10-12 19:15:46,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4820 to 4815. [2020-10-12 19:15:46,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4815 states. [2020-10-12 19:15:46,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4815 states to 4815 states and 6482 transitions. [2020-10-12 19:15:46,607 INFO L78 Accepts]: Start accepts. Automaton has 4815 states and 6482 transitions. Word has length 159 [2020-10-12 19:15:46,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:15:46,607 INFO L479 AbstractCegarLoop]: Abstraction has 4815 states and 6482 transitions. [2020-10-12 19:15:46,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:15:46,607 INFO L276 IsEmpty]: Start isEmpty. Operand 4815 states and 6482 transitions. [2020-10-12 19:15:46,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-12 19:15:46,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:15:46,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:46,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:15:46,615 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:15:46,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:15:46,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1388338011, now seen corresponding path program 1 times [2020-10-12 19:15:46,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:15:46,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481140562] [2020-10-12 19:15:46,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:15:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:46,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:46,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:46,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:46,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:46,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:46,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:47,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:47,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:48,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:48,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:51,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:51,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:51,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 19:15:51,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:15:51,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 19:15:51,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:51,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:15:51,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:15:51,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 19:15:51,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:52,368 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 48 [2020-10-12 19:15:52,819 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:15:52,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:15:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:52,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:52,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:15:52,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:15:52,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:15:52,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:15:52,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:15:52,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:15:52,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:15:52,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:15:52,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:15:52,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:15:52,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481140562] [2020-10-12 19:15:52,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:15:52,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:15:52,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843441660] [2020-10-12 19:15:52,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:15:52,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:15:52,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:15:52,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:15:52,888 INFO L87 Difference]: Start difference. First operand 4815 states and 6482 transitions. Second operand 15 states. [2020-10-12 19:15:53,186 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 19:15:58,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:15:58,448 INFO L93 Difference]: Finished difference Result 12892 states and 17739 transitions. [2020-10-12 19:15:58,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:15:58,449 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 166 [2020-10-12 19:15:58,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:15:58,463 INFO L225 Difference]: With dead ends: 12892 [2020-10-12 19:15:58,464 INFO L226 Difference]: Without dead ends: 11110 [2020-10-12 19:15:58,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2020-10-12 19:15:58,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11110 states. [2020-10-12 19:15:58,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11110 to 5147. [2020-10-12 19:15:58,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5147 states. [2020-10-12 19:15:58,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5147 states to 5147 states and 6890 transitions. [2020-10-12 19:15:58,934 INFO L78 Accepts]: Start accepts. Automaton has 5147 states and 6890 transitions. Word has length 166 [2020-10-12 19:15:58,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:15:58,934 INFO L479 AbstractCegarLoop]: Abstraction has 5147 states and 6890 transitions. [2020-10-12 19:15:58,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:15:58,934 INFO L276 IsEmpty]: Start isEmpty. Operand 5147 states and 6890 transitions. [2020-10-12 19:15:58,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-12 19:15:58,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:15:58,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:58,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:15:58,942 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:15:58,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:15:58,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1357314558, now seen corresponding path program 1 times [2020-10-12 19:15:58,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:15:58,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141368640] [2020-10-12 19:15:58,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:15:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:15:58,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:59,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:59,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:59,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:59,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:59,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:59,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:59,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:15:59,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:00,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:00,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:00,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:01,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:03,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:16:03,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 19:16:03,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:16:03,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:16:03,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:16:03,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:16:03,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:16:03,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 19:16:03,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:16:04,275 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:16:04,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:16:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:16:04,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:04,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:16:04,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:16:04,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:16:04,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:16:04,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:16:04,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:16:04,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:16:04,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:16:04,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:16:04,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:16:04,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141368640] [2020-10-12 19:16:04,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:16:04,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:16:04,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489390116] [2020-10-12 19:16:04,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:16:04,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:16:04,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:16:04,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:16:04,319 INFO L87 Difference]: Start difference. First operand 5147 states and 6890 transitions. Second operand 5 states. [2020-10-12 19:16:08,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:16:08,008 INFO L93 Difference]: Finished difference Result 11563 states and 15558 transitions. [2020-10-12 19:16:08,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:16:08,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-12 19:16:08,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:16:08,016 INFO L225 Difference]: With dead ends: 11563 [2020-10-12 19:16:08,017 INFO L226 Difference]: Without dead ends: 7175 [2020-10-12 19:16:08,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:16:08,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7175 states. [2020-10-12 19:16:08,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7175 to 7147. [2020-10-12 19:16:08,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7147 states. [2020-10-12 19:16:08,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7147 states to 7147 states and 9392 transitions. [2020-10-12 19:16:08,510 INFO L78 Accepts]: Start accepts. Automaton has 7147 states and 9392 transitions. Word has length 166 [2020-10-12 19:16:08,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:16:08,511 INFO L479 AbstractCegarLoop]: Abstraction has 7147 states and 9392 transitions. [2020-10-12 19:16:08,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:16:08,511 INFO L276 IsEmpty]: Start isEmpty. Operand 7147 states and 9392 transitions. [2020-10-12 19:16:08,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-12 19:16:08,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:16:08,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:08,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:16:08,520 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:16:08,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:16:08,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1972886155, now seen corresponding path program 1 times [2020-10-12 19:16:08,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:16:08,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761970583] [2020-10-12 19:16:08,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:16:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:16:08,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:08,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:08,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:08,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:08,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:08,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:12,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:13,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:16:13,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-12 19:16:13,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:16:13,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 19:16:13,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:16:13,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:16:13,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:16:13,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 19:16:13,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:16:14,091 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:16:14,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:16:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:16:14,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:14,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:16:14,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:16:14,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:16:14,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 19:16:14,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:16:14,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:16:14,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:16:14,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:16:14,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:16:14,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:16:14,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761970583] [2020-10-12 19:16:14,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:16:14,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:16:14,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834419299] [2020-10-12 19:16:14,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:16:14,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:16:14,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:16:14,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:16:14,301 INFO L87 Difference]: Start difference. First operand 7147 states and 9392 transitions. Second operand 16 states. [2020-10-12 19:16:14,625 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-12 19:16:26,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:16:26,275 INFO L93 Difference]: Finished difference Result 34618 states and 47301 transitions. [2020-10-12 19:16:26,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 19:16:26,277 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 173 [2020-10-12 19:16:26,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:16:26,308 INFO L225 Difference]: With dead ends: 34618 [2020-10-12 19:16:26,308 INFO L226 Difference]: Without dead ends: 28601 [2020-10-12 19:16:26,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=298, Invalid=892, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 19:16:26,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28601 states. [2020-10-12 19:16:27,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28601 to 12582. [2020-10-12 19:16:27,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12582 states. [2020-10-12 19:16:27,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12582 states to 12582 states and 16597 transitions. [2020-10-12 19:16:27,423 INFO L78 Accepts]: Start accepts. Automaton has 12582 states and 16597 transitions. Word has length 173 [2020-10-12 19:16:27,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:16:27,424 INFO L479 AbstractCegarLoop]: Abstraction has 12582 states and 16597 transitions. [2020-10-12 19:16:27,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 19:16:27,424 INFO L276 IsEmpty]: Start isEmpty. Operand 12582 states and 16597 transitions. [2020-10-12 19:16:27,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-12 19:16:27,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:16:27,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:27,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:16:27,435 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:16:27,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:16:27,435 INFO L82 PathProgramCache]: Analyzing trace with hash 684987530, now seen corresponding path program 1 times [2020-10-12 19:16:27,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:16:27,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901640765] [2020-10-12 19:16:27,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:16:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:16:27,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:27,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:27,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:27,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:27,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:28,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:30,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:30,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:30,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:30,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:32,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:16:32,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-12 19:16:32,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:16:32,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:16:32,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:16:32,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:16:32,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:16:32,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 19:16:32,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:16:32,863 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:16:32,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:16:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:16:32,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:32,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:16:32,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:16:32,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:16:32,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:16:32,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:16:32,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:16:32,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:16:32,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:16:32,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:16:32,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:16:32,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901640765] [2020-10-12 19:16:32,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:16:32,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:16:32,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886521937] [2020-10-12 19:16:32,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:16:32,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:16:32,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:16:32,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:16:32,934 INFO L87 Difference]: Start difference. First operand 12582 states and 16597 transitions. Second operand 11 states. [2020-10-12 19:16:33,258 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-12 19:16:41,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:16:41,488 INFO L93 Difference]: Finished difference Result 43710 states and 60815 transitions. [2020-10-12 19:16:41,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 19:16:41,488 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 173 [2020-10-12 19:16:41,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:16:41,525 INFO L225 Difference]: With dead ends: 43710 [2020-10-12 19:16:41,525 INFO L226 Difference]: Without dead ends: 32764 [2020-10-12 19:16:41,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=248, Invalid=622, Unknown=0, NotChecked=0, Total=870 [2020-10-12 19:16:41,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32764 states. [2020-10-12 19:16:43,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32764 to 15266. [2020-10-12 19:16:43,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15266 states. [2020-10-12 19:16:43,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15266 states to 15266 states and 20472 transitions. [2020-10-12 19:16:43,093 INFO L78 Accepts]: Start accepts. Automaton has 15266 states and 20472 transitions. Word has length 173 [2020-10-12 19:16:43,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:16:43,093 INFO L479 AbstractCegarLoop]: Abstraction has 15266 states and 20472 transitions. [2020-10-12 19:16:43,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:16:43,093 INFO L276 IsEmpty]: Start isEmpty. Operand 15266 states and 20472 transitions. [2020-10-12 19:16:43,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-12 19:16:43,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:16:43,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:43,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:16:43,104 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:16:43,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:16:43,105 INFO L82 PathProgramCache]: Analyzing trace with hash -212406338, now seen corresponding path program 1 times [2020-10-12 19:16:43,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:16:43,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529910666] [2020-10-12 19:16:43,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:16:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:16:43,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:43,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:43,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:43,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:43,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:43,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:43,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:43,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:44,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:47,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:47,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:47,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:47,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:47,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:48,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:16:48,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-12 19:16:48,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:16:48,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:16:48,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:16:48,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:16:48,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:16:48,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-12 19:16:48,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:16:48,398 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:16:48,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:16:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:16:48,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:48,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:16:48,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:16:48,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:16:48,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 19:16:48,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:16:48,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:16:48,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:16:48,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:16:48,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:16:48,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:16:48,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529910666] [2020-10-12 19:16:48,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:16:48,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:16:48,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682329142] [2020-10-12 19:16:48,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:16:48,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:16:48,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:16:48,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:16:48,458 INFO L87 Difference]: Start difference. First operand 15266 states and 20472 transitions. Second operand 6 states. [2020-10-12 19:16:48,731 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-12 19:16:52,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:16:52,993 INFO L93 Difference]: Finished difference Result 37494 states and 51237 transitions. [2020-10-12 19:16:52,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:16:52,993 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2020-10-12 19:16:52,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:16:53,020 INFO L225 Difference]: With dead ends: 37494 [2020-10-12 19:16:53,021 INFO L226 Difference]: Without dead ends: 23595 [2020-10-12 19:16:53,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:16:53,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23595 states. [2020-10-12 19:16:56,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23595 to 23589. [2020-10-12 19:16:56,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23589 states. [2020-10-12 19:16:56,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23589 states to 23589 states and 32112 transitions. [2020-10-12 19:16:56,055 INFO L78 Accepts]: Start accepts. Automaton has 23589 states and 32112 transitions. Word has length 173 [2020-10-12 19:16:56,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:16:56,056 INFO L479 AbstractCegarLoop]: Abstraction has 23589 states and 32112 transitions. [2020-10-12 19:16:56,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:16:56,056 INFO L276 IsEmpty]: Start isEmpty. Operand 23589 states and 32112 transitions. [2020-10-12 19:16:56,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-12 19:16:56,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:16:56,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:56,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 19:16:56,070 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:16:56,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:16:56,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1973491317, now seen corresponding path program 1 times [2020-10-12 19:16:56,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:16:56,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417545353] [2020-10-12 19:16:56,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:16:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:16:56,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:56,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:56,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:56,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:56,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:56,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:56,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:57,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:57,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:57,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:57,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:57,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:01,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:01,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-12 19:17:01,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:17:01,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:17:01,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:01,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:17:01,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:17:01,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 19:17:01,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:17:01,401 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:17:01,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:17:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:01,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:01,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:01,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:17:01,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:17:01,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:17:01,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:01,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:17:01,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:17:01,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:17:01,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:17:01,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:17:01,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417545353] [2020-10-12 19:17:01,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:17:01,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:17:01,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833551302] [2020-10-12 19:17:01,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:17:01,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:17:01,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:17:01,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:17:01,449 INFO L87 Difference]: Start difference. First operand 23589 states and 32112 transitions. Second operand 5 states. [2020-10-12 19:17:01,782 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-12 19:17:06,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:17:06,011 INFO L93 Difference]: Finished difference Result 41914 states and 57164 transitions. [2020-10-12 19:17:06,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:17:06,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-12 19:17:06,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:17:06,038 INFO L225 Difference]: With dead ends: 41914 [2020-10-12 19:17:06,038 INFO L226 Difference]: Without dead ends: 23525 [2020-10-12 19:17:06,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:17:06,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23525 states. [2020-10-12 19:17:08,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23525 to 23494. [2020-10-12 19:17:08,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23494 states. [2020-10-12 19:17:08,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23494 states to 23494 states and 31877 transitions. [2020-10-12 19:17:08,379 INFO L78 Accepts]: Start accepts. Automaton has 23494 states and 31877 transitions. Word has length 173 [2020-10-12 19:17:08,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:17:08,379 INFO L479 AbstractCegarLoop]: Abstraction has 23494 states and 31877 transitions. [2020-10-12 19:17:08,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:17:08,379 INFO L276 IsEmpty]: Start isEmpty. Operand 23494 states and 31877 transitions. [2020-10-12 19:17:08,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-12 19:17:08,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:17:08,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:17:08,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 19:17:08,388 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:17:08,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:17:08,388 INFO L82 PathProgramCache]: Analyzing trace with hash -695344456, now seen corresponding path program 1 times [2020-10-12 19:17:08,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:17:08,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13301325] [2020-10-12 19:17:08,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:17:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:08,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:08,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:08,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:08,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:08,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:08,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:09,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:11,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:11,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:11,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:11,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:11,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:12,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:12,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:13,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:13,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 19:17:13,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:17:13,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 19:17:13,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:13,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:17:13,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-12 19:17:13,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 19:17:13,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:17:14,205 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:17:14,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:17:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:14,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:14,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:14,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:17:14,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:17:14,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:17:14,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:17:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:17:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:17:14,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:17:14,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:17:14,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13301325] [2020-10-12 19:17:14,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:17:14,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:17:14,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566819573] [2020-10-12 19:17:14,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:17:14,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:17:14,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:17:14,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:17:14,316 INFO L87 Difference]: Start difference. First operand 23494 states and 31877 transitions. Second operand 15 states. [2020-10-12 19:17:14,626 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 85 [2020-10-12 19:17:15,708 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 283 DAG size of output: 264 [2020-10-12 19:17:16,510 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2020-10-12 19:17:29,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:17:29,935 INFO L93 Difference]: Finished difference Result 68982 states and 96806 transitions. [2020-10-12 19:17:29,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-12 19:17:29,936 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 174 [2020-10-12 19:17:29,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:17:30,013 INFO L225 Difference]: With dead ends: 68982 [2020-10-12 19:17:30,013 INFO L226 Difference]: Without dead ends: 64916 [2020-10-12 19:17:30,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=344, Invalid=1818, Unknown=0, NotChecked=0, Total=2162 [2020-10-12 19:17:30,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64916 states. [2020-10-12 19:17:33,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64916 to 25517. [2020-10-12 19:17:33,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25517 states. [2020-10-12 19:17:33,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25517 states to 25517 states and 34258 transitions. [2020-10-12 19:17:33,221 INFO L78 Accepts]: Start accepts. Automaton has 25517 states and 34258 transitions. Word has length 174 [2020-10-12 19:17:33,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:17:33,222 INFO L479 AbstractCegarLoop]: Abstraction has 25517 states and 34258 transitions. [2020-10-12 19:17:33,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:17:33,222 INFO L276 IsEmpty]: Start isEmpty. Operand 25517 states and 34258 transitions. [2020-10-12 19:17:33,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-12 19:17:33,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:17:33,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:17:33,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 19:17:33,234 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:17:33,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:17:33,234 INFO L82 PathProgramCache]: Analyzing trace with hash -504152589, now seen corresponding path program 1 times [2020-10-12 19:17:33,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:17:33,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377137892] [2020-10-12 19:17:33,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:17:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:33,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:33,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:33,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:33,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:33,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:33,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:33,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:36,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:36,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:36,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:37,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:37,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:38,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:38,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 19:17:38,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:17:38,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:17:38,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:38,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:17:38,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-12 19:17:38,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 19:17:38,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:17:39,088 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:17:39,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:17:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:39,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:39,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:39,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:17:39,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:17:39,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:17:39,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:39,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:17:39,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:17:39,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:17:39,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:17:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:17:39,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377137892] [2020-10-12 19:17:39,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:17:39,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:17:39,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159896503] [2020-10-12 19:17:39,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:17:39,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:17:39,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:17:39,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:17:39,157 INFO L87 Difference]: Start difference. First operand 25517 states and 34258 transitions. Second operand 13 states. [2020-10-12 19:17:39,525 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 211