/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:44:36,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:44:36,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:44:37,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:44:37,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:44:37,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:44:37,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:44:37,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:44:37,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:44:37,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:44:37,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:44:37,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:44:37,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:44:37,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:44:37,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:44:37,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:44:37,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:44:37,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:44:37,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:44:37,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:44:37,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:44:37,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:44:37,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:44:37,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:44:37,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:44:37,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:44:37,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:44:37,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:44:37,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:44:37,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:44:37,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:44:37,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:44:37,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:44:37,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:44:37,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:44:37,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:44:37,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:44:37,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:44:37,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:44:37,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:44:37,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:44:37,099 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 19:44:37,120 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:44:37,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:44:37,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:44:37,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:44:37,122 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:44:37,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:44:37,123 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:44:37,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:44:37,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:44:37,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:44:37,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:44:37,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:44:37,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:44:37,124 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:44:37,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:44:37,124 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:44:37,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:44:37,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:44:37,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:44:37,125 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:44:37,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:44:37,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:44:37,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:44:37,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:44:37,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:44:37,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:44:37,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:44:37,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:44:37,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:44:37,127 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 19:44:37,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:44:37,450 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:44:37,454 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:44:37,456 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:44:37,458 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:44:37,459 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-12 19:44:37,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9063d5b27/3a689608e3f84e7dae680d8b3b0a7dba/FLAG86a36fc71 [2020-10-12 19:44:38,103 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:44:38,104 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-12 19:44:38,119 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9063d5b27/3a689608e3f84e7dae680d8b3b0a7dba/FLAG86a36fc71 [2020-10-12 19:44:38,360 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9063d5b27/3a689608e3f84e7dae680d8b3b0a7dba [2020-10-12 19:44:38,368 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:44:38,370 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:44:38,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:44:38,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:44:38,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:44:38,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:44:38" (1/1) ... [2020-10-12 19:44:38,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@718a428c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:38, skipping insertion in model container [2020-10-12 19:44:38,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:44:38" (1/1) ... [2020-10-12 19:44:38,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:44:38,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:44:38,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:44:38,983 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:44:39,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:44:39,446 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:44:39,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:39 WrapperNode [2020-10-12 19:44:39,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:44:39,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:44:39,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:44:39,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:44:39,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:39" (1/1) ... [2020-10-12 19:44:39,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:39" (1/1) ... [2020-10-12 19:44:39,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:39" (1/1) ... [2020-10-12 19:44:39,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:39" (1/1) ... [2020-10-12 19:44:39,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:39" (1/1) ... [2020-10-12 19:44:39,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:39" (1/1) ... [2020-10-12 19:44:39,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:39" (1/1) ... [2020-10-12 19:44:39,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:44:39,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:44:39,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:44:39,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:44:39,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:39" (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 19:44:39,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:44:39,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:44:39,620 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:44:39,620 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:44:39,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:44:39,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:44:39,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:44:39,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:44:39,622 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:44:39,622 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:44:39,623 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:44:39,623 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:44:39,623 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:44:39,623 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:44:39,623 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:44:39,624 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:44:39,624 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:44:39,625 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:44:39,625 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-12 19:44:39,625 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:44:39,626 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:44:39,626 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:44:39,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:44:39,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:44:40,831 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:44:40,831 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:44:40,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:44:40 BoogieIcfgContainer [2020-10-12 19:44:40,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:44:40,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:44:40,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:44:40,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:44:40,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:44:38" (1/3) ... [2020-10-12 19:44:40,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2596119b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:44:40, skipping insertion in model container [2020-10-12 19:44:40,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:39" (2/3) ... [2020-10-12 19:44:40,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2596119b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:44:40, skipping insertion in model container [2020-10-12 19:44:40,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:44:40" (3/3) ... [2020-10-12 19:44:40,846 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-12 19:44:40,857 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:44:40,865 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:44:40,879 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:44:40,906 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:44:40,906 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:44:40,906 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:44:40,906 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:44:40,906 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:44:40,907 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:44:40,907 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:44:40,907 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:44:40,931 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2020-10-12 19:44:40,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 19:44:40,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:40,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:44:40,949 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:40,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:40,956 INFO L82 PathProgramCache]: Analyzing trace with hash 870041976, now seen corresponding path program 1 times [2020-10-12 19:44:40,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:40,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281898733] [2020-10-12 19:44:40,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:41,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:41,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:41,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:41,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:41,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:42,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:42,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:42,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:42,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:42,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:42,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:44,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:46,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:46,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 19:44:46,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:44:46,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-12 19:44:46,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:46,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:44:46,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-12 19:44:46,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 19:44:46,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:44:46,764 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:44:46,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:44:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:46,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:46,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:46,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:44:46,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:44:46,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:44:46,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:46,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:44:46,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:44:46,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:44:46,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:46,842 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 19:44:46,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281898733] [2020-10-12 19:44:46,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:44:46,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:44:46,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751770123] [2020-10-12 19:44:46,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:44:46,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:44:46,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:44:46,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:44:46,874 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 5 states. [2020-10-12 19:44:48,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:44:48,568 INFO L93 Difference]: Finished difference Result 549 states and 890 transitions. [2020-10-12 19:44:48,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:44:48,570 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-12 19:44:48,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:44:48,588 INFO L225 Difference]: With dead ends: 549 [2020-10-12 19:44:48,589 INFO L226 Difference]: Without dead ends: 327 [2020-10-12 19:44:48,594 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 19:44:48,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-12 19:44:48,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2020-10-12 19:44:48,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-10-12 19:44:48,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 532 transitions. [2020-10-12 19:44:48,663 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 532 transitions. Word has length 123 [2020-10-12 19:44:48,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:44:48,663 INFO L479 AbstractCegarLoop]: Abstraction has 327 states and 532 transitions. [2020-10-12 19:44:48,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:44:48,664 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 532 transitions. [2020-10-12 19:44:48,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 19:44:48,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:48,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:44:48,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:44:48,669 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:48,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:48,670 INFO L82 PathProgramCache]: Analyzing trace with hash -44047366, now seen corresponding path program 1 times [2020-10-12 19:44:48,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:48,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104155946] [2020-10-12 19:44:48,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:48,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:48,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:48,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:48,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:48,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:49,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:49,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:49,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:49,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:49,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:49,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:52,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:52,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:52,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:53,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:53,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 19:44:53,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:44:53,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:44:53,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:53,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:44:53,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:44:53,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 19:44:53,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:54,192 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:44:54,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:44:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:54,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:54,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:54,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:44:54,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:44:54,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:44:54,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:54,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:44:54,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:44:54,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:44:54,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:54,274 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 19:44:54,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104155946] [2020-10-12 19:44:54,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:44:54,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:44:54,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696362921] [2020-10-12 19:44:54,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:44:54,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:44:54,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:44:54,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:44:54,278 INFO L87 Difference]: Start difference. First operand 327 states and 532 transitions. Second operand 9 states. [2020-10-12 19:44:54,561 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 19:45:00,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:00,682 INFO L93 Difference]: Finished difference Result 2016 states and 3203 transitions. [2020-10-12 19:45:00,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 19:45:00,683 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 125 [2020-10-12 19:45:00,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:00,696 INFO L225 Difference]: With dead ends: 2016 [2020-10-12 19:45:00,696 INFO L226 Difference]: Without dead ends: 1815 [2020-10-12 19:45:00,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2020-10-12 19:45:00,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2020-10-12 19:45:00,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 936. [2020-10-12 19:45:00,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 936 states. [2020-10-12 19:45:00,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1496 transitions. [2020-10-12 19:45:00,841 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1496 transitions. Word has length 125 [2020-10-12 19:45:00,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:00,844 INFO L479 AbstractCegarLoop]: Abstraction has 936 states and 1496 transitions. [2020-10-12 19:45:00,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:45:00,845 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1496 transitions. [2020-10-12 19:45:00,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 19:45:00,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:00,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:45:00,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:45:00,853 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:00,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:00,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1803235649, now seen corresponding path program 1 times [2020-10-12 19:45:00,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:00,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052829081] [2020-10-12 19:45:00,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:00,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:00,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:01,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:01,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:01,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:01,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:01,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:01,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:01,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:01,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:01,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:05,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:05,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:05,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:05,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 19:45:05,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:45:05,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-12 19:45:05,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:45:05,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 19:45:05,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 19:45:05,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:45:06,202 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:45:06,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:06,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:06,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:06,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:06,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:06,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:45:06,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:06,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:45:06,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:06,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:45:06,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:06,239 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 19:45:06,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052829081] [2020-10-12 19:45:06,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:06,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:45:06,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111671828] [2020-10-12 19:45:06,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:45:06,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:06,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:45:06,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:45:06,242 INFO L87 Difference]: Start difference. First operand 936 states and 1496 transitions. Second operand 5 states. [2020-10-12 19:45:08,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:08,071 INFO L93 Difference]: Finished difference Result 1826 states and 2906 transitions. [2020-10-12 19:45:08,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:45:08,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-12 19:45:08,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:08,080 INFO L225 Difference]: With dead ends: 1826 [2020-10-12 19:45:08,080 INFO L226 Difference]: Without dead ends: 936 [2020-10-12 19:45:08,083 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 19:45:08,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2020-10-12 19:45:08,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 936. [2020-10-12 19:45:08,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 936 states. [2020-10-12 19:45:08,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1456 transitions. [2020-10-12 19:45:08,133 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1456 transitions. Word has length 125 [2020-10-12 19:45:08,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:08,134 INFO L479 AbstractCegarLoop]: Abstraction has 936 states and 1456 transitions. [2020-10-12 19:45:08,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:45:08,134 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1456 transitions. [2020-10-12 19:45:08,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 19:45:08,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:08,138 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] [2020-10-12 19:45:08,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:45:08,147 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:08,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:08,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1952146361, now seen corresponding path program 1 times [2020-10-12 19:45:08,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:08,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099057901] [2020-10-12 19:45:08,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:08,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:08,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:08,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:08,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:08,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:08,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:08,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:08,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:08,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:08,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:08,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:09,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:11,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:11,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:13,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:13,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 19:45:13,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:45:13,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:45:13,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:13,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:45:13,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:45:13,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 19:45:13,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:13,477 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:45:13,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:13,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:13,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:13,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:13,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:13,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 19:45:13,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:13,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:45:13,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:13,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:45:13,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:13,570 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 19:45:13,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099057901] [2020-10-12 19:45:13,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:13,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:45:13,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815406440] [2020-10-12 19:45:13,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:45:13,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:13,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:45:13,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:45:13,576 INFO L87 Difference]: Start difference. First operand 936 states and 1456 transitions. Second operand 6 states. [2020-10-12 19:45:13,819 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:45:15,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:15,835 INFO L93 Difference]: Finished difference Result 1869 states and 2943 transitions. [2020-10-12 19:45:15,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:45:15,835 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2020-10-12 19:45:15,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:15,843 INFO L225 Difference]: With dead ends: 1869 [2020-10-12 19:45:15,843 INFO L226 Difference]: Without dead ends: 1127 [2020-10-12 19:45:15,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:45:15,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2020-10-12 19:45:15,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 669. [2020-10-12 19:45:15,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 669 states. [2020-10-12 19:45:15,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1030 transitions. [2020-10-12 19:45:15,900 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1030 transitions. Word has length 164 [2020-10-12 19:45:15,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:15,902 INFO L479 AbstractCegarLoop]: Abstraction has 669 states and 1030 transitions. [2020-10-12 19:45:15,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:45:15,903 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1030 transitions. [2020-10-12 19:45:15,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-12 19:45:15,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:15,906 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] [2020-10-12 19:45:15,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:45:15,906 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:15,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:15,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1655700712, now seen corresponding path program 1 times [2020-10-12 19:45:15,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:15,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017210419] [2020-10-12 19:45:15,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:15,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:16,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:16,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:16,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:16,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:16,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:16,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:16,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:16,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:16,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:17,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:17,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:17,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:20,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:20,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-12 19:45:20,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:45:20,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 19:45:20,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:20,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:45:20,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:45:20,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 19:45:20,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:21,340 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:45:21,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:21,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:21,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:21,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:21,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:21,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 19:45:21,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:21,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:45:21,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:21,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:45:21,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:21,437 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 19:45:21,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017210419] [2020-10-12 19:45:21,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:21,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:45:21,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423745291] [2020-10-12 19:45:21,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:45:21,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:21,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:45:21,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:45:21,442 INFO L87 Difference]: Start difference. First operand 669 states and 1030 transitions. Second operand 11 states. [2020-10-12 19:45:21,696 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 19:45:28,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:28,950 INFO L93 Difference]: Finished difference Result 4254 states and 6713 transitions. [2020-10-12 19:45:28,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 19:45:28,951 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 165 [2020-10-12 19:45:28,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:28,971 INFO L225 Difference]: With dead ends: 4254 [2020-10-12 19:45:28,971 INFO L226 Difference]: Without dead ends: 3811 [2020-10-12 19:45:28,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=331, Invalid=1151, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 19:45:28,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3811 states. [2020-10-12 19:45:29,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3811 to 750. [2020-10-12 19:45:29,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 750 states. [2020-10-12 19:45:29,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1152 transitions. [2020-10-12 19:45:29,055 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1152 transitions. Word has length 165 [2020-10-12 19:45:29,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:29,056 INFO L479 AbstractCegarLoop]: Abstraction has 750 states and 1152 transitions. [2020-10-12 19:45:29,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:45:29,056 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1152 transitions. [2020-10-12 19:45:29,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-12 19:45:29,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:29,059 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 19:45:29,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:45:29,060 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:29,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:29,060 INFO L82 PathProgramCache]: Analyzing trace with hash -386711581, now seen corresponding path program 1 times [2020-10-12 19:45:29,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:29,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770853560] [2020-10-12 19:45:29,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:29,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:29,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:29,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:29,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:29,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:29,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:29,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:29,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:29,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:29,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:29,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:29,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:31,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:31,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:31,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:31,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:34,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:34,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 19:45:34,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:45:34,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:45:34,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:34,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:45:34,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:45:34,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 19:45:34,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:34,453 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:45:34,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:34,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:34,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:34,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:34,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:34,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:45:34,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:34,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:45:34,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:34,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:45:34,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:45:34,614 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 19:45:34,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770853560] [2020-10-12 19:45:34,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:34,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:45:34,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068249572] [2020-10-12 19:45:34,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:45:34,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:34,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:45:34,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:45:34,619 INFO L87 Difference]: Start difference. First operand 750 states and 1152 transitions. Second operand 9 states. [2020-10-12 19:45:34,929 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 19:45:39,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:39,869 INFO L93 Difference]: Finished difference Result 7422 states and 11648 transitions. [2020-10-12 19:45:39,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:45:39,870 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2020-10-12 19:45:39,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:39,903 INFO L225 Difference]: With dead ends: 7422 [2020-10-12 19:45:39,903 INFO L226 Difference]: Without dead ends: 6885 [2020-10-12 19:45:39,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:45:39,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6885 states. [2020-10-12 19:45:40,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6885 to 1414. [2020-10-12 19:45:40,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1414 states. [2020-10-12 19:45:40,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 2184 transitions. [2020-10-12 19:45:40,089 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 2184 transitions. Word has length 166 [2020-10-12 19:45:40,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:40,090 INFO L479 AbstractCegarLoop]: Abstraction has 1414 states and 2184 transitions. [2020-10-12 19:45:40,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:45:40,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 2184 transitions. [2020-10-12 19:45:40,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-12 19:45:40,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:40,094 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] [2020-10-12 19:45:40,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:45:40,095 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:40,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:40,095 INFO L82 PathProgramCache]: Analyzing trace with hash 952518583, now seen corresponding path program 1 times [2020-10-12 19:45:40,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:40,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254975610] [2020-10-12 19:45:40,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:40,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:40,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:40,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:40,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:40,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:40,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:40,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:40,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:40,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:40,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:40,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:40,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:45,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:45,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:45,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-12 19:45:45,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:45:45,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 19:45:45,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:45,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:45:45,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:45:45,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 19:45:45,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:45,721 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:45:45,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:45,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:45,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:45,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:45,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:45,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:45:45,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:45,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:45:45,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:45,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:45:45,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:45:45,938 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 19:45:45,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254975610] [2020-10-12 19:45:45,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:45,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:45:45,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887537890] [2020-10-12 19:45:45,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:45:45,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:45,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:45:45,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:45:45,943 INFO L87 Difference]: Start difference. First operand 1414 states and 2184 transitions. Second operand 10 states. [2020-10-12 19:45:46,397 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-12 19:45:51,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:51,406 INFO L93 Difference]: Finished difference Result 6151 states and 9643 transitions. [2020-10-12 19:45:51,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:45:51,407 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-10-12 19:45:51,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:51,430 INFO L225 Difference]: With dead ends: 6151 [2020-10-12 19:45:51,430 INFO L226 Difference]: Without dead ends: 5402 [2020-10-12 19:45:51,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:45:51,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5402 states. [2020-10-12 19:45:51,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5402 to 1426. [2020-10-12 19:45:51,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-10-12 19:45:51,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2202 transitions. [2020-10-12 19:45:51,740 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2202 transitions. Word has length 167 [2020-10-12 19:45:51,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:51,740 INFO L479 AbstractCegarLoop]: Abstraction has 1426 states and 2202 transitions. [2020-10-12 19:45:51,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:45:51,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2202 transitions. [2020-10-12 19:45:51,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-12 19:45:51,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:51,748 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] [2020-10-12 19:45:51,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:45:51,748 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:51,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:51,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1631087461, now seen corresponding path program 1 times [2020-10-12 19:45:51,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:51,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483658018] [2020-10-12 19:45:51,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:51,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:51,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:51,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:51,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:51,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:51,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:51,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:52,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:52,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:52,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:52,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:53,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:53,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:53,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:53,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:53,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:56,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:56,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 19:45:56,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:45:56,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:45:56,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:56,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:45:56,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:45:56,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 19:45:56,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:57,110 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:45:57,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:57,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:57,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:57,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:57,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:57,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:45:57,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:57,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:45:57,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:57,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:45:57,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:57,200 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 19:45:57,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483658018] [2020-10-12 19:45:57,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:57,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:45:57,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079961738] [2020-10-12 19:45:57,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:45:57,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:57,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:45:57,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:45:57,212 INFO L87 Difference]: Start difference. First operand 1426 states and 2202 transitions. Second operand 9 states. [2020-10-12 19:45:57,466 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-12 19:46:03,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:46:03,922 INFO L93 Difference]: Finished difference Result 9326 states and 14526 transitions. [2020-10-12 19:46:03,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:46:03,922 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2020-10-12 19:46:03,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:46:03,954 INFO L225 Difference]: With dead ends: 9326 [2020-10-12 19:46:03,954 INFO L226 Difference]: Without dead ends: 8877 [2020-10-12 19:46:03,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:46:03,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8877 states. [2020-10-12 19:46:04,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8877 to 2999. [2020-10-12 19:46:04,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2999 states. [2020-10-12 19:46:04,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 4644 transitions. [2020-10-12 19:46:04,540 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 4644 transitions. Word has length 168 [2020-10-12 19:46:04,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:46:04,541 INFO L479 AbstractCegarLoop]: Abstraction has 2999 states and 4644 transitions. [2020-10-12 19:46:04,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:46:04,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 4644 transitions. [2020-10-12 19:46:04,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-12 19:46:04,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:04,551 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] [2020-10-12 19:46:04,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:46:04,552 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:04,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:04,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1580950072, now seen corresponding path program 1 times [2020-10-12 19:46:04,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:04,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705417058] [2020-10-12 19:46:04,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:04,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:04,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:04,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:04,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:04,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:04,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:04,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:04,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:04,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:05,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:05,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:05,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:05,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:06,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:06,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:09,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:09,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 19:46:09,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:46:09,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:46:09,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:09,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:46:09,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 19:46:09,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 19:46:09,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:09,879 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:46:09,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:09,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:09,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:09,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:09,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:09,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:46:09,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:09,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:46:09,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:09,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:46:09,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:09,955 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 19:46:09,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705417058] [2020-10-12 19:46:09,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:46:09,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:46:09,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112952494] [2020-10-12 19:46:09,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:46:09,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:09,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:46:09,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:46:09,957 INFO L87 Difference]: Start difference. First operand 2999 states and 4644 transitions. Second operand 9 states. [2020-10-12 19:46:10,257 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-12 19:46:16,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:46:16,772 INFO L93 Difference]: Finished difference Result 11729 states and 18219 transitions. [2020-10-12 19:46:16,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:46:16,772 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2020-10-12 19:46:16,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:46:16,793 INFO L225 Difference]: With dead ends: 11729 [2020-10-12 19:46:16,793 INFO L226 Difference]: Without dead ends: 11165 [2020-10-12 19:46:16,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:46:16,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11165 states. [2020-10-12 19:46:17,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11165 to 4550. [2020-10-12 19:46:17,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4550 states. [2020-10-12 19:46:17,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4550 states to 4550 states and 7062 transitions. [2020-10-12 19:46:17,610 INFO L78 Accepts]: Start accepts. Automaton has 4550 states and 7062 transitions. Word has length 168 [2020-10-12 19:46:17,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:46:17,611 INFO L479 AbstractCegarLoop]: Abstraction has 4550 states and 7062 transitions. [2020-10-12 19:46:17,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:46:17,611 INFO L276 IsEmpty]: Start isEmpty. Operand 4550 states and 7062 transitions. [2020-10-12 19:46:17,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-12 19:46:17,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:17,623 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] [2020-10-12 19:46:17,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:46:17,623 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:17,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:17,624 INFO L82 PathProgramCache]: Analyzing trace with hash 680361410, now seen corresponding path program 1 times [2020-10-12 19:46:17,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:17,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009017934] [2020-10-12 19:46:17,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:17,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:17,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:17,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:17,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:17,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:17,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:17,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:17,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:17,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:17,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:18,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:18,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:19,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:19,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:19,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:22,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:22,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 19:46:22,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:46:22,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:46:22,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:22,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:46:22,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:46:22,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 19:46:22,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:22,930 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:46:22,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:22,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:22,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:22,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:22,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:22,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:46:22,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:22,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:46:22,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:22,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:46:22,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:22,978 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 19:46:22,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009017934] [2020-10-12 19:46:22,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:46:22,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:46:22,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524224292] [2020-10-12 19:46:22,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:46:22,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:22,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:46:22,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:46:22,980 INFO L87 Difference]: Start difference. First operand 4550 states and 7062 transitions. Second operand 9 states. [2020-10-12 19:46:23,265 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-12 19:46:29,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:46:29,118 INFO L93 Difference]: Finished difference Result 13080 states and 20338 transitions. [2020-10-12 19:46:29,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:46:29,119 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2020-10-12 19:46:29,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:46:29,146 INFO L225 Difference]: With dead ends: 13080 [2020-10-12 19:46:29,146 INFO L226 Difference]: Without dead ends: 12496 [2020-10-12 19:46:29,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:46:29,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12496 states. [2020-10-12 19:46:30,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12496 to 5724. [2020-10-12 19:46:30,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5724 states. [2020-10-12 19:46:30,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5724 states to 5724 states and 8889 transitions. [2020-10-12 19:46:30,280 INFO L78 Accepts]: Start accepts. Automaton has 5724 states and 8889 transitions. Word has length 168 [2020-10-12 19:46:30,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:46:30,280 INFO L479 AbstractCegarLoop]: Abstraction has 5724 states and 8889 transitions. [2020-10-12 19:46:30,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:46:30,281 INFO L276 IsEmpty]: Start isEmpty. Operand 5724 states and 8889 transitions. [2020-10-12 19:46:30,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-12 19:46:30,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:30,295 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] [2020-10-12 19:46:30,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:46:30,295 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:30,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:30,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1238462288, now seen corresponding path program 1 times [2020-10-12 19:46:30,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:30,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981712707] [2020-10-12 19:46:30,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:30,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:30,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:30,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:30,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:30,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:30,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:30,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:30,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:30,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:30,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:30,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:30,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:32,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:32,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:32,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:35,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:35,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 19:46:35,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:46:35,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:46:35,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:46:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:46:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 19:46:35,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:35,605 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:46:35,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:35,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:35,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:35,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:35,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:35,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:46:35,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:35,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:46:35,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:35,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:46:35,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:35,652 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 19:46:35,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981712707] [2020-10-12 19:46:35,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:46:35,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:46:35,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094527508] [2020-10-12 19:46:35,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:46:35,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:35,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:46:35,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:46:35,654 INFO L87 Difference]: Start difference. First operand 5724 states and 8889 transitions. Second operand 9 states. [2020-10-12 19:46:35,942 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-12 19:46:40,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:46:40,858 INFO L93 Difference]: Finished difference Result 14125 states and 21946 transitions. [2020-10-12 19:46:40,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:46:40,859 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2020-10-12 19:46:40,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:46:40,880 INFO L225 Difference]: With dead ends: 14125 [2020-10-12 19:46:40,880 INFO L226 Difference]: Without dead ends: 13541 [2020-10-12 19:46:40,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:46:40,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13541 states. [2020-10-12 19:46:41,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13541 to 6828. [2020-10-12 19:46:41,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6828 states. [2020-10-12 19:46:41,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6828 states to 6828 states and 10604 transitions. [2020-10-12 19:46:41,875 INFO L78 Accepts]: Start accepts. Automaton has 6828 states and 10604 transitions. Word has length 168 [2020-10-12 19:46:41,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:46:41,875 INFO L479 AbstractCegarLoop]: Abstraction has 6828 states and 10604 transitions. [2020-10-12 19:46:41,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:46:41,875 INFO L276 IsEmpty]: Start isEmpty. Operand 6828 states and 10604 transitions. [2020-10-12 19:46:41,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-12 19:46:41,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:41,889 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] [2020-10-12 19:46:41,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:46:41,890 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:41,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:41,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1852641962, now seen corresponding path program 1 times [2020-10-12 19:46:41,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:41,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644834487] [2020-10-12 19:46:41,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:41,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:41,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:41,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:41,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:42,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:42,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:42,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:42,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:42,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:42,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:42,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:42,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:44,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:44,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:44,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:46,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:46,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 19:46:46,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:46:46,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:46:46,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:46,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:46:46,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:46:46,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 19:46:46,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:47,194 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:46:47,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:47,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:47,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:47,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:47,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:47,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:46:47,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:47,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:46:47,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:47,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:46:47,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:47,248 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 19:46:47,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644834487] [2020-10-12 19:46:47,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:46:47,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:46:47,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476470885] [2020-10-12 19:46:47,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:46:47,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:47,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:46:47,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:46:47,251 INFO L87 Difference]: Start difference. First operand 6828 states and 10604 transitions. Second operand 9 states. [2020-10-12 19:46:47,537 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-12 19:46:52,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:46:52,861 INFO L93 Difference]: Finished difference Result 15220 states and 23634 transitions. [2020-10-12 19:46:52,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:46:52,861 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2020-10-12 19:46:52,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:46:52,880 INFO L225 Difference]: With dead ends: 15220 [2020-10-12 19:46:52,880 INFO L226 Difference]: Without dead ends: 14636 [2020-10-12 19:46:52,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:46:52,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14636 states. [2020-10-12 19:46:54,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14636 to 7902. [2020-10-12 19:46:54,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7902 states. [2020-10-12 19:46:54,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7902 states to 7902 states and 12271 transitions. [2020-10-12 19:46:54,241 INFO L78 Accepts]: Start accepts. Automaton has 7902 states and 12271 transitions. Word has length 168 [2020-10-12 19:46:54,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:46:54,241 INFO L479 AbstractCegarLoop]: Abstraction has 7902 states and 12271 transitions. [2020-10-12 19:46:54,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:46:54,241 INFO L276 IsEmpty]: Start isEmpty. Operand 7902 states and 12271 transitions. [2020-10-12 19:46:54,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-12 19:46:54,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:54,253 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] [2020-10-12 19:46:54,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:46:54,253 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:54,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:54,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1064253892, now seen corresponding path program 1 times [2020-10-12 19:46:54,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:54,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540905622] [2020-10-12 19:46:54,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:54,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:54,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:54,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:54,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:54,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:54,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:54,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:54,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:54,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:54,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:54,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:55,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:55,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:55,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:55,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:59,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:59,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 19:46:59,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:46:59,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:46:59,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:59,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:46:59,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:46:59,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 19:46:59,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:59,556 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:46:59,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:59,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:59,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:59,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:59,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:59,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:46:59,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:59,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:46:59,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:59,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:46:59,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:59,623 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 19:46:59,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540905622] [2020-10-12 19:46:59,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:46:59,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:46:59,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386428309] [2020-10-12 19:46:59,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:46:59,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:59,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:46:59,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:46:59,626 INFO L87 Difference]: Start difference. First operand 7902 states and 12271 transitions. Second operand 9 states. [2020-10-12 19:46:59,903 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-12 19:47:06,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:47:06,299 INFO L93 Difference]: Finished difference Result 16675 states and 25898 transitions. [2020-10-12 19:47:06,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:47:06,300 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2020-10-12 19:47:06,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:47:06,322 INFO L225 Difference]: With dead ends: 16675 [2020-10-12 19:47:06,322 INFO L226 Difference]: Without dead ends: 16091 [2020-10-12 19:47:06,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:47:06,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16091 states. [2020-10-12 19:47:07,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16091 to 9066. [2020-10-12 19:47:07,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9066 states. [2020-10-12 19:47:07,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9066 states to 9066 states and 14082 transitions. [2020-10-12 19:47:07,866 INFO L78 Accepts]: Start accepts. Automaton has 9066 states and 14082 transitions. Word has length 168 [2020-10-12 19:47:07,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:47:07,866 INFO L479 AbstractCegarLoop]: Abstraction has 9066 states and 14082 transitions. [2020-10-12 19:47:07,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:47:07,866 INFO L276 IsEmpty]: Start isEmpty. Operand 9066 states and 14082 transitions. [2020-10-12 19:47:07,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 19:47:07,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:47:07,878 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] [2020-10-12 19:47:07,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:47:07,879 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:47:07,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:47:07,879 INFO L82 PathProgramCache]: Analyzing trace with hash 493678794, now seen corresponding path program 1 times [2020-10-12 19:47:07,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:47:07,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767820254] [2020-10-12 19:47:07,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:47:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:07,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:07,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:07,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:07,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:07,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:08,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:08,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:08,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:08,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:08,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:08,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:08,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:10,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:10,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:12,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:12,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 19:47:12,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:47:12,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:47:12,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:12,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:47:12,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:47:12,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 19:47:12,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:13,165 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:47:13,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:47:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:13,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:13,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:13,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:47:13,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:47:13,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:47:13,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:13,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:47:13,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:47:13,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:47:13,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:13,199 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 19:47:13,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767820254] [2020-10-12 19:47:13,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:47:13,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:47:13,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470634537] [2020-10-12 19:47:13,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:47:13,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:47:13,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:47:13,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:47:13,201 INFO L87 Difference]: Start difference. First operand 9066 states and 14082 transitions. Second operand 8 states. [2020-10-12 19:47:13,428 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-12 19:47:23,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:47:23,839 INFO L93 Difference]: Finished difference Result 50168 states and 78226 transitions. [2020-10-12 19:47:23,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 19:47:23,841 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 170 [2020-10-12 19:47:23,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:47:23,879 INFO L225 Difference]: With dead ends: 50168 [2020-10-12 19:47:23,879 INFO L226 Difference]: Without dead ends: 42366 [2020-10-12 19:47:23,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:47:23,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42366 states. [2020-10-12 19:47:26,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42366 to 12533. [2020-10-12 19:47:26,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12533 states. [2020-10-12 19:47:26,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12533 states to 12533 states and 19410 transitions. [2020-10-12 19:47:26,131 INFO L78 Accepts]: Start accepts. Automaton has 12533 states and 19410 transitions. Word has length 170 [2020-10-12 19:47:26,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:47:26,131 INFO L479 AbstractCegarLoop]: Abstraction has 12533 states and 19410 transitions. [2020-10-12 19:47:26,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:47:26,131 INFO L276 IsEmpty]: Start isEmpty. Operand 12533 states and 19410 transitions. [2020-10-12 19:47:26,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 19:47:26,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:47:26,148 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] [2020-10-12 19:47:26,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 19:47:26,148 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:47:26,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:47:26,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1539977020, now seen corresponding path program 1 times [2020-10-12 19:47:26,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:47:26,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348670289] [2020-10-12 19:47:26,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:47:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:26,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:26,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:26,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:26,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:26,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:26,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:26,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:26,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:26,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:26,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:26,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:27,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:27,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:31,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:31,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 19:47:31,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:47:31,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:47:31,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:47:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:47:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 19:47:31,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:31,516 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:47:31,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:47:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:31,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:31,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:31,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:47:31,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:47:31,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:47:31,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:31,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:47:31,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:47:31,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:47:31,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:31,586 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 19:47:31,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348670289] [2020-10-12 19:47:31,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:47:31,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:47:31,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020291649] [2020-10-12 19:47:31,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:47:31,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:47:31,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:47:31,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:47:31,588 INFO L87 Difference]: Start difference. First operand 12533 states and 19410 transitions. Second operand 10 states. [2020-10-12 19:47:31,835 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-12 19:47:41,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:47:41,816 INFO L93 Difference]: Finished difference Result 40465 states and 63220 transitions. [2020-10-12 19:47:41,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:47:41,817 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 170 [2020-10-12 19:47:41,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:47:41,844 INFO L225 Difference]: With dead ends: 40465 [2020-10-12 19:47:41,844 INFO L226 Difference]: Without dead ends: 29617 [2020-10-12 19:47:41,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-10-12 19:47:41,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29617 states. [2020-10-12 19:47:44,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29617 to 11967. [2020-10-12 19:47:44,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11967 states. [2020-10-12 19:47:44,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11967 states to 11967 states and 18448 transitions. [2020-10-12 19:47:44,015 INFO L78 Accepts]: Start accepts. Automaton has 11967 states and 18448 transitions. Word has length 170 [2020-10-12 19:47:44,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:47:44,016 INFO L479 AbstractCegarLoop]: Abstraction has 11967 states and 18448 transitions. [2020-10-12 19:47:44,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:47:44,016 INFO L276 IsEmpty]: Start isEmpty. Operand 11967 states and 18448 transitions. [2020-10-12 19:47:44,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 19:47:44,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:47:44,030 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] [2020-10-12 19:47:44,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 19:47:44,030 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:47:44,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:47:44,030 INFO L82 PathProgramCache]: Analyzing trace with hash -655997023, now seen corresponding path program 1 times [2020-10-12 19:47:44,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:47:44,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970829125] [2020-10-12 19:47:44,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:47:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:44,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:44,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:44,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:44,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:44,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:44,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:44,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:44,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:44,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:44,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:44,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:45,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:45,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:45,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:45,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:49,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:49,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 19:47:49,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:47:49,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:47:49,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:49,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:47:49,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:47:49,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 19:47:49,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:49,325 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:47:49,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:47:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:49,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:49,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:49,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:47:49,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:47:49,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:47:49,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:49,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:47:49,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:47:49,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:47:49,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:49,361 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 19:47:49,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970829125] [2020-10-12 19:47:49,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:47:49,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:47:49,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682140460] [2020-10-12 19:47:49,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:47:49,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:47:49,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:47:49,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:47:49,364 INFO L87 Difference]: Start difference. First operand 11967 states and 18448 transitions. Second operand 8 states. [2020-10-12 19:47:49,615 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 19:48:02,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:48:02,188 INFO L93 Difference]: Finished difference Result 60950 states and 94141 transitions. [2020-10-12 19:48:02,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 19:48:02,189 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 170 [2020-10-12 19:48:02,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:48:02,234 INFO L225 Difference]: With dead ends: 60950 [2020-10-12 19:48:02,235 INFO L226 Difference]: Without dead ends: 49263 [2020-10-12 19:48:02,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:48:02,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49263 states. [2020-10-12 19:48:07,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49263 to 23102. [2020-10-12 19:48:07,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23102 states. [2020-10-12 19:48:07,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23102 states to 23102 states and 35427 transitions. [2020-10-12 19:48:07,277 INFO L78 Accepts]: Start accepts. Automaton has 23102 states and 35427 transitions. Word has length 170 [2020-10-12 19:48:07,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:48:07,278 INFO L479 AbstractCegarLoop]: Abstraction has 23102 states and 35427 transitions. [2020-10-12 19:48:07,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:48:07,278 INFO L276 IsEmpty]: Start isEmpty. Operand 23102 states and 35427 transitions. [2020-10-12 19:48:07,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 19:48:07,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:48:07,298 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] [2020-10-12 19:48:07,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 19:48:07,298 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:48:07,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:48:07,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1582096597, now seen corresponding path program 1 times [2020-10-12 19:48:07,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:48:07,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802332399] [2020-10-12 19:48:07,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:48:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:48:07,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:07,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:07,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:07,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:07,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:07,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:07,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:07,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:07,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:07,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:07,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:09,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:09,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:10,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:10,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:10,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:10,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:10,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:10,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:11,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:12,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:48:12,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 19:48:12,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-12 19:48:12,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:48:12,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:48:12,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:48:12,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:48:12,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 19:48:12,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:48:12,626 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:48:12,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:48:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:48:12,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:12,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:48:12,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:48:12,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:48:12,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:48:12,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:48:12,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:48:12,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:48:12,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:48:12,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:48:12,666 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 19:48:12,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802332399] [2020-10-12 19:48:12,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:48:12,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:48:12,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256276997] [2020-10-12 19:48:12,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:48:12,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:48:12,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:48:12,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:48:12,669 INFO L87 Difference]: Start difference. First operand 23102 states and 35427 transitions. Second operand 9 states. [2020-10-12 19:48:12,907 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 158