/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:38:53,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:38:53,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:38:53,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:38:53,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:38:53,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:38:53,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:38:53,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:38:53,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:38:53,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:38:53,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:38:53,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:38:53,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:38:53,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:38:53,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:38:53,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:38:53,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:38:53,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:38:53,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:38:53,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:38:53,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:38:53,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:38:53,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:38:53,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:38:53,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:38:53,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:38:53,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:38:53,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:38:53,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:38:53,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:38:53,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:38:53,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:38:53,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:38:53,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:38:53,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:38:53,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:38:53,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:38:53,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:38:53,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:38:53,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:38:53,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:38:53,466 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 [2020-10-14 08:38:53,489 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:38:53,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:38:53,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:38:53,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:38:53,495 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:38:53,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:38:53,496 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:38:53,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:38:53,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:38:53,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:38:53,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:38:53,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:38:53,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:38:53,497 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:38:53,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:38:53,497 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:38:53,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:38:53,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:38:53,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:38:53,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:38:53,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:38:53,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:38:53,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:38:53,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:38:53,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:38:53,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:38:53,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:38:53,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:38:53,500 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:38:53,500 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 08:38:53,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:38:53,836 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:38:53,840 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:38:53,843 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:38:53,843 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:38:53,844 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-10-14 08:38:53,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/12381f2fc/2294385b36bf4a62b2030ccbbaec44f2/FLAG1bff93a08 [2020-10-14 08:38:54,431 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:38:54,432 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-10-14 08:38:54,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/12381f2fc/2294385b36bf4a62b2030ccbbaec44f2/FLAG1bff93a08 [2020-10-14 08:38:54,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/12381f2fc/2294385b36bf4a62b2030ccbbaec44f2 [2020-10-14 08:38:54,724 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:38:54,726 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:38:54,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:38:54,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:38:54,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:38:54,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:38:54" (1/1) ... [2020-10-14 08:38:54,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dbafe48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:38:54, skipping insertion in model container [2020-10-14 08:38:54,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:38:54" (1/1) ... [2020-10-14 08:38:54,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:38:54,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:38:55,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:38:55,133 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:38:55,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:38:55,306 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:38:55,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:38:55 WrapperNode [2020-10-14 08:38:55,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:38:55,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:38:55,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:38:55,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:38:55,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:38:55" (1/1) ... [2020-10-14 08:38:55,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:38:55" (1/1) ... [2020-10-14 08:38:55,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:38:55" (1/1) ... [2020-10-14 08:38:55,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:38:55" (1/1) ... [2020-10-14 08:38:55,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:38:55" (1/1) ... [2020-10-14 08:38:55,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:38:55" (1/1) ... [2020-10-14 08:38:55,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:38:55" (1/1) ... [2020-10-14 08:38:55,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:38:55,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:38:55,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:38:55,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:38:55,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:38:55" (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 [2020-10-14 08:38:55,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:38:55,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:38:55,421 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:38:55,421 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:38:55,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:38:55,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:38:55,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:38:55,422 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:38:55,422 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:38:55,422 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:38:55,422 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:38:55,423 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:38:55,423 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:38:55,423 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:38:55,423 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:38:55,423 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:38:55,424 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:38:55,424 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:38:55,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:38:55,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:38:55,922 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:38:55,923 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:38:55,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:38:55 BoogieIcfgContainer [2020-10-14 08:38:55,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:38:55,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:38:55,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:38:55,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:38:55,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:38:54" (1/3) ... [2020-10-14 08:38:55,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55deb24c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:38:55, skipping insertion in model container [2020-10-14 08:38:55,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:38:55" (2/3) ... [2020-10-14 08:38:55,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55deb24c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:38:55, skipping insertion in model container [2020-10-14 08:38:55,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:38:55" (3/3) ... [2020-10-14 08:38:55,938 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-10-14 08:38:55,950 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:38:55,958 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 08:38:55,973 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 08:38:56,001 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:38:56,001 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:38:56,002 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:38:56,002 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:38:56,002 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:38:56,002 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:38:56,003 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:38:56,003 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:38:56,026 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-10-14 08:38:56,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 08:38:56,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:56,036 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] [2020-10-14 08:38:56,037 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:56,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:56,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1803074216, now seen corresponding path program 1 times [2020-10-14 08:38:56,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:56,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096316576] [2020-10-14 08:38:56,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:56,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:56,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:56,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:57,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:57,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:57,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 08:38:57,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:38:57,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1572 [2020-10-14 08:38:57,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:57,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:57,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:38:57,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 08:38:57,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 08:38:57,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 08:38:58,155 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 08:38:58,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:58,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:58,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:58,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:58,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:58,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 08:38:58,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:58,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:58,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:38:58,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:58,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:38:58,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 08:38:58,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:58,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096316576] [2020-10-14 08:38:58,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:58,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:38:58,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819209069] [2020-10-14 08:38:58,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:38:58,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:58,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:38:58,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:38:58,268 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 4 states. [2020-10-14 08:38:58,499 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-14 08:38:58,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:58,887 INFO L93 Difference]: Finished difference Result 147 states and 231 transitions. [2020-10-14 08:38:58,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:38:58,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-14 08:38:58,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:58,902 INFO L225 Difference]: With dead ends: 147 [2020-10-14 08:38:58,902 INFO L226 Difference]: Without dead ends: 95 [2020-10-14 08:38:58,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:38:58,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-14 08:38:58,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2020-10-14 08:38:58,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-14 08:38:58,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 134 transitions. [2020-10-14 08:38:58,979 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 134 transitions. Word has length 40 [2020-10-14 08:38:58,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:58,979 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 134 transitions. [2020-10-14 08:38:58,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:38:58,980 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 134 transitions. [2020-10-14 08:38:58,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 08:38:58,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:58,982 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] [2020-10-14 08:38:58,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:38:58,982 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:58,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:58,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1722155448, now seen corresponding path program 1 times [2020-10-14 08:38:58,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:58,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579098076] [2020-10-14 08:38:58,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:59,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:59,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:59,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:59,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:00,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:00,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 08:39:00,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:39:00,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1463 [2020-10-14 08:39:00,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:00,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:00,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:39:00,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 08:39:00,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 08:39:00,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:39:00,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:00,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:00,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:00,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:00,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:00,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:39:00,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:00,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:00,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:00,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:00,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:00,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:39:00,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:00,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579098076] [2020-10-14 08:39:00,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:00,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:39:00,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747350485] [2020-10-14 08:39:00,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:39:00,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:00,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:39:00,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:39:00,646 INFO L87 Difference]: Start difference. First operand 93 states and 134 transitions. Second operand 4 states. [2020-10-14 08:39:00,804 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-14 08:39:01,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:01,156 INFO L93 Difference]: Finished difference Result 217 states and 330 transitions. [2020-10-14 08:39:01,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:39:01,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-14 08:39:01,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:01,159 INFO L225 Difference]: With dead ends: 217 [2020-10-14 08:39:01,159 INFO L226 Difference]: Without dead ends: 147 [2020-10-14 08:39:01,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:39:01,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-14 08:39:01,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2020-10-14 08:39:01,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-14 08:39:01,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 216 transitions. [2020-10-14 08:39:01,183 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 216 transitions. Word has length 41 [2020-10-14 08:39:01,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:01,184 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 216 transitions. [2020-10-14 08:39:01,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:39:01,184 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 216 transitions. [2020-10-14 08:39:01,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 08:39:01,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:01,186 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] [2020-10-14 08:39:01,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:39:01,186 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:01,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:01,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1351365489, now seen corresponding path program 1 times [2020-10-14 08:39:01,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:01,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922298668] [2020-10-14 08:39:01,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:01,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:01,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:01,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:01,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:02,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:04,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:04,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 08:39:04,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:39:04,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3150 [2020-10-14 08:39:04,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:04,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:39:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 08:39:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 08:39:04,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:39:04,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:04,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:04,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:04,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:04,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:04,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:39:04,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:04,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:04,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:04,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:04,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:04,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:39:04,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:04,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922298668] [2020-10-14 08:39:04,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:04,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:39:04,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070115134] [2020-10-14 08:39:04,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:39:04,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:04,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:39:04,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:39:04,520 INFO L87 Difference]: Start difference. First operand 145 states and 216 transitions. Second operand 4 states. [2020-10-14 08:39:04,657 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-14 08:39:04,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:04,979 INFO L93 Difference]: Finished difference Result 357 states and 550 transitions. [2020-10-14 08:39:04,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:39:04,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-14 08:39:04,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:04,986 INFO L225 Difference]: With dead ends: 357 [2020-10-14 08:39:04,986 INFO L226 Difference]: Without dead ends: 235 [2020-10-14 08:39:04,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:39:04,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-14 08:39:05,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 233. [2020-10-14 08:39:05,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-14 08:39:05,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 352 transitions. [2020-10-14 08:39:05,037 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 352 transitions. Word has length 42 [2020-10-14 08:39:05,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:05,038 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 352 transitions. [2020-10-14 08:39:05,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:39:05,038 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 352 transitions. [2020-10-14 08:39:05,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 08:39:05,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:05,041 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] [2020-10-14 08:39:05,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:39:05,042 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:05,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:05,042 INFO L82 PathProgramCache]: Analyzing trace with hash -526265596, now seen corresponding path program 1 times [2020-10-14 08:39:05,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:05,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531585933] [2020-10-14 08:39:05,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:05,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:05,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:05,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:05,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:05,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:05,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:06,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:10,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:10,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 08:39:10,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:39:10,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 08:39:10,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:10,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:10,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:39:10,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:39:10,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 08:39:10,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:39:10,250 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 08:39:10,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:10,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:10,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:10,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:10,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:10,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 08:39:10,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:10,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:10,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:39:10,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:10,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:39:10,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:39:10,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:10,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531585933] [2020-10-14 08:39:10,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:10,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:39:10,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049546952] [2020-10-14 08:39:10,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:39:10,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:10,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:39:10,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:39:10,288 INFO L87 Difference]: Start difference. First operand 233 states and 352 transitions. Second operand 6 states. [2020-10-14 08:39:10,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:10,644 INFO L93 Difference]: Finished difference Result 443 states and 681 transitions. [2020-10-14 08:39:10,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:39:10,645 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-10-14 08:39:10,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:10,647 INFO L225 Difference]: With dead ends: 443 [2020-10-14 08:39:10,647 INFO L226 Difference]: Without dead ends: 233 [2020-10-14 08:39:10,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:39:10,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-14 08:39:10,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2020-10-14 08:39:10,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-14 08:39:10,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 348 transitions. [2020-10-14 08:39:10,670 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 348 transitions. Word has length 43 [2020-10-14 08:39:10,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:10,670 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 348 transitions. [2020-10-14 08:39:10,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:39:10,671 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 348 transitions. [2020-10-14 08:39:10,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 08:39:10,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:10,672 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] [2020-10-14 08:39:10,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:39:10,672 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:10,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:10,673 INFO L82 PathProgramCache]: Analyzing trace with hash 747602409, now seen corresponding path program 1 times [2020-10-14 08:39:10,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:10,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734596828] [2020-10-14 08:39:10,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:10,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:10,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:10,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:11,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:12,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:12,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 08:39:12,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:39:12,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1432 [2020-10-14 08:39:12,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:12,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:12,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:39:12,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:39:12,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 08:39:12,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:39:12,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:12,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:12,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:12,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:12,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:12,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:39:12,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:12,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:12,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:12,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:12,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:12,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:39:12,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:12,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734596828] [2020-10-14 08:39:12,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:12,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:39:12,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680807193] [2020-10-14 08:39:12,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:39:12,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:12,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:39:12,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:39:12,309 INFO L87 Difference]: Start difference. First operand 233 states and 348 transitions. Second operand 6 states. [2020-10-14 08:39:12,457 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-14 08:39:12,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:12,809 INFO L93 Difference]: Finished difference Result 1493 states and 2298 transitions. [2020-10-14 08:39:12,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:39:12,810 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-10-14 08:39:12,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:12,824 INFO L225 Difference]: With dead ends: 1493 [2020-10-14 08:39:12,825 INFO L226 Difference]: Without dead ends: 1283 [2020-10-14 08:39:12,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:39:12,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2020-10-14 08:39:12,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 441. [2020-10-14 08:39:12,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-14 08:39:12,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 656 transitions. [2020-10-14 08:39:12,912 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 656 transitions. Word has length 43 [2020-10-14 08:39:12,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:12,912 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 656 transitions. [2020-10-14 08:39:12,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:39:12,912 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 656 transitions. [2020-10-14 08:39:12,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 08:39:12,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:12,917 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] [2020-10-14 08:39:12,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:39:12,918 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:12,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:12,918 INFO L82 PathProgramCache]: Analyzing trace with hash 313232099, now seen corresponding path program 1 times [2020-10-14 08:39:12,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:12,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657676007] [2020-10-14 08:39:12,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:12,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:12,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:13,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:13,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:14,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:14,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 08:39:14,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:39:14,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1147 [2020-10-14 08:39:14,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:14,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:14,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:39:14,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:39:14,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 08:39:14,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 08:39:14,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:14,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:14,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:14,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:14,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:14,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:39:14,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:14,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:14,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:14,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:14,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:14,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:39:14,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:14,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657676007] [2020-10-14 08:39:14,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:14,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:39:14,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419252926] [2020-10-14 08:39:14,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:39:14,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:14,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:39:14,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:39:14,292 INFO L87 Difference]: Start difference. First operand 441 states and 656 transitions. Second operand 6 states. [2020-10-14 08:39:14,462 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-14 08:39:14,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:14,836 INFO L93 Difference]: Finished difference Result 1701 states and 2558 transitions. [2020-10-14 08:39:14,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:39:14,837 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-10-14 08:39:14,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:14,844 INFO L225 Difference]: With dead ends: 1701 [2020-10-14 08:39:14,845 INFO L226 Difference]: Without dead ends: 1283 [2020-10-14 08:39:14,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:39:14,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2020-10-14 08:39:14,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 441. [2020-10-14 08:39:14,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-14 08:39:14,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 648 transitions. [2020-10-14 08:39:14,903 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 648 transitions. Word has length 45 [2020-10-14 08:39:14,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:14,903 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 648 transitions. [2020-10-14 08:39:14,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:39:14,903 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 648 transitions. [2020-10-14 08:39:14,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 08:39:14,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:14,904 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] [2020-10-14 08:39:14,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:39:14,905 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:14,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:14,905 INFO L82 PathProgramCache]: Analyzing trace with hash 293182756, now seen corresponding path program 1 times [2020-10-14 08:39:14,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:14,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009097880] [2020-10-14 08:39:14,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:14,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:14,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:14,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:15,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:15,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:15,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:16,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:16,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 08:39:16,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:39:16,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1396 [2020-10-14 08:39:16,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:16,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:16,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:39:16,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 08:39:16,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 08:39:16,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:39:16,469 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 08:39:16,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:16,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:16,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:16,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:16,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:16,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:39:16,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:16,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:16,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:16,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:16,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:16,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:39:16,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:16,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009097880] [2020-10-14 08:39:16,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:16,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:39:16,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593856097] [2020-10-14 08:39:16,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:39:16,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:16,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:39:16,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:39:16,500 INFO L87 Difference]: Start difference. First operand 441 states and 648 transitions. Second operand 4 states. [2020-10-14 08:39:16,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:16,864 INFO L93 Difference]: Finished difference Result 1059 states and 1568 transitions. [2020-10-14 08:39:16,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:39:16,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-14 08:39:16,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:16,869 INFO L225 Difference]: With dead ends: 1059 [2020-10-14 08:39:16,869 INFO L226 Difference]: Without dead ends: 641 [2020-10-14 08:39:16,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:39:16,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2020-10-14 08:39:16,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 639. [2020-10-14 08:39:16,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-10-14 08:39:16,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 930 transitions. [2020-10-14 08:39:16,929 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 930 transitions. Word has length 45 [2020-10-14 08:39:16,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:16,930 INFO L479 AbstractCegarLoop]: Abstraction has 639 states and 930 transitions. [2020-10-14 08:39:16,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:39:16,930 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 930 transitions. [2020-10-14 08:39:16,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 08:39:16,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:16,931 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] [2020-10-14 08:39:16,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:39:16,931 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:16,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:16,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1118351057, now seen corresponding path program 1 times [2020-10-14 08:39:16,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:16,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106582124] [2020-10-14 08:39:16,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:16,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:16,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:17,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:17,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:17,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:17,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 08:39:17,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:39:17,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-10-14 08:39:17,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:17,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:17,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:39:17,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:39:17,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 08:39:17,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:39:18,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:18,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:18,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:18,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:18,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:18,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 08:39:18,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:18,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:18,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:39:18,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:18,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:39:18,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:39:18,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:18,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106582124] [2020-10-14 08:39:18,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:18,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:39:18,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692893549] [2020-10-14 08:39:18,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:39:18,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:18,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:39:18,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:39:18,136 INFO L87 Difference]: Start difference. First operand 639 states and 930 transitions. Second operand 6 states. [2020-10-14 08:39:18,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:18,594 INFO L93 Difference]: Finished difference Result 1855 states and 2716 transitions. [2020-10-14 08:39:18,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:39:18,595 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-14 08:39:18,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:18,603 INFO L225 Difference]: With dead ends: 1855 [2020-10-14 08:39:18,604 INFO L226 Difference]: Without dead ends: 1241 [2020-10-14 08:39:18,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:39:18,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2020-10-14 08:39:18,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1239. [2020-10-14 08:39:18,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1239 states. [2020-10-14 08:39:18,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1798 transitions. [2020-10-14 08:39:18,736 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1798 transitions. Word has length 46 [2020-10-14 08:39:18,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:18,736 INFO L479 AbstractCegarLoop]: Abstraction has 1239 states and 1798 transitions. [2020-10-14 08:39:18,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:39:18,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1798 transitions. [2020-10-14 08:39:18,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 08:39:18,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:18,738 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] [2020-10-14 08:39:18,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:39:18,738 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:18,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:18,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1983883446, now seen corresponding path program 1 times [2020-10-14 08:39:18,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:18,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151765502] [2020-10-14 08:39:18,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:18,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:18,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:18,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:18,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 08:39:18,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 08:39:18,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-14 08:39:18,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:18,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:18,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:39:18,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:39:18,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 08:39:18,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:39:19,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:19,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:19,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:19,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:19,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:19,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:39:19,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:19,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:19,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:39:19,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:19,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:39:19,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:39:19,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:19,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151765502] [2020-10-14 08:39:19,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:19,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:39:19,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406891239] [2020-10-14 08:39:19,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:39:19,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:19,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:39:19,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:39:19,112 INFO L87 Difference]: Start difference. First operand 1239 states and 1798 transitions. Second operand 6 states. [2020-10-14 08:39:19,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:19,658 INFO L93 Difference]: Finished difference Result 3263 states and 4764 transitions. [2020-10-14 08:39:19,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:39:19,659 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-14 08:39:19,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:19,669 INFO L225 Difference]: With dead ends: 3263 [2020-10-14 08:39:19,669 INFO L226 Difference]: Without dead ends: 2049 [2020-10-14 08:39:19,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:39:19,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2020-10-14 08:39:19,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 2047. [2020-10-14 08:39:19,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2047 states. [2020-10-14 08:39:19,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 2958 transitions. [2020-10-14 08:39:19,884 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 2958 transitions. Word has length 46 [2020-10-14 08:39:19,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:19,885 INFO L479 AbstractCegarLoop]: Abstraction has 2047 states and 2958 transitions. [2020-10-14 08:39:19,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:39:19,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 2958 transitions. [2020-10-14 08:39:19,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 08:39:19,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:19,886 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] [2020-10-14 08:39:19,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:39:19,886 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:19,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:19,887 INFO L82 PathProgramCache]: Analyzing trace with hash 2111968753, now seen corresponding path program 1 times [2020-10-14 08:39:19,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:19,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805597573] [2020-10-14 08:39:19,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:19,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:19,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:19,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 08:39:19,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:19,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 08:39:19,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:19,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:19,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:39:19,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 08:39:19,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 08:39:19,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:20,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:20,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:20,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:20,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:20,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:20,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:39:20,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:20,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:20,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:20,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:20,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:20,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:20,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:20,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805597573] [2020-10-14 08:39:20,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:20,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:39:20,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513449424] [2020-10-14 08:39:20,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:39:20,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:20,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:39:20,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:39:20,120 INFO L87 Difference]: Start difference. First operand 2047 states and 2958 transitions. Second operand 5 states. [2020-10-14 08:39:21,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:21,011 INFO L93 Difference]: Finished difference Result 3905 states and 5608 transitions. [2020-10-14 08:39:21,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:39:21,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-10-14 08:39:21,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:21,035 INFO L225 Difference]: With dead ends: 3905 [2020-10-14 08:39:21,035 INFO L226 Difference]: Without dead ends: 3903 [2020-10-14 08:39:21,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:39:21,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3903 states. [2020-10-14 08:39:21,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3903 to 2175. [2020-10-14 08:39:21,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2175 states. [2020-10-14 08:39:21,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 3078 transitions. [2020-10-14 08:39:21,365 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 3078 transitions. Word has length 46 [2020-10-14 08:39:21,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:21,365 INFO L479 AbstractCegarLoop]: Abstraction has 2175 states and 3078 transitions. [2020-10-14 08:39:21,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:39:21,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 3078 transitions. [2020-10-14 08:39:21,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 08:39:21,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:21,368 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:39:21,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:39:21,368 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:21,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:21,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1060358588, now seen corresponding path program 1 times [2020-10-14 08:39:21,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:21,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747734836] [2020-10-14 08:39:21,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:21,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:21,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:21,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:22,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:22,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:23,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:23,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:23,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:24,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:24,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:25,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:25,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:25,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:26,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:26,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 08:39:26,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:39:26,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:39:26,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:26,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:26,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:39:26,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:39:26,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 08:39:26,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:39:26,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:26,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:26,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:26,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:26,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:26,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:39:26,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:26,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:26,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:26,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:26,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:26,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:39:26,591 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 08:39:26,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747734836] [2020-10-14 08:39:26,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:39:26,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 08:39:26,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886413192] [2020-10-14 08:39:26,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:39:26,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:26,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:39:26,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:39:26,594 INFO L87 Difference]: Start difference. First operand 2175 states and 3078 transitions. Second operand 6 states. [2020-10-14 08:39:26,763 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-14 08:39:28,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:28,147 INFO L93 Difference]: Finished difference Result 9809 states and 13966 transitions. [2020-10-14 08:39:28,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:39:28,148 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-14 08:39:28,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:28,184 INFO L225 Difference]: With dead ends: 9809 [2020-10-14 08:39:28,185 INFO L226 Difference]: Without dead ends: 7659 [2020-10-14 08:39:28,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:39:28,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7659 states. [2020-10-14 08:39:28,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7659 to 5185. [2020-10-14 08:39:28,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5185 states. [2020-10-14 08:39:28,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 7288 transitions. [2020-10-14 08:39:28,820 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 7288 transitions. Word has length 64 [2020-10-14 08:39:28,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:28,820 INFO L479 AbstractCegarLoop]: Abstraction has 5185 states and 7288 transitions. [2020-10-14 08:39:28,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:39:28,821 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 7288 transitions. [2020-10-14 08:39:28,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 08:39:28,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:28,822 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:39:28,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:39:28,823 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:28,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:28,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1036613366, now seen corresponding path program 1 times [2020-10-14 08:39:28,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:28,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525392114] [2020-10-14 08:39:28,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:28,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:28,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:28,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:29,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:29,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:29,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:30,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:30,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:30,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:31,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:31,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:31,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:32,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:32,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:33,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:33,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:33,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 08:39:33,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:39:33,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:39:33,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:33,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:33,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:39:33,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:39:33,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 08:39:33,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:33,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:33,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:34,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:34,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:34,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:34,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:39:34,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:34,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:34,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:34,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:34,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:34,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:39:34,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 08:39:34,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525392114] [2020-10-14 08:39:34,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:39:34,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 08:39:34,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151748738] [2020-10-14 08:39:34,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:39:34,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:34,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:39:34,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:39:34,021 INFO L87 Difference]: Start difference. First operand 5185 states and 7288 transitions. Second operand 6 states. [2020-10-14 08:39:34,180 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-14 08:39:35,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:35,379 INFO L93 Difference]: Finished difference Result 14119 states and 19823 transitions. [2020-10-14 08:39:35,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:39:35,380 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-14 08:39:35,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:35,453 INFO L225 Difference]: With dead ends: 14119 [2020-10-14 08:39:35,454 INFO L226 Difference]: Without dead ends: 11107 [2020-10-14 08:39:35,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:39:35,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11107 states. [2020-10-14 08:39:36,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11107 to 8411. [2020-10-14 08:39:36,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8411 states. [2020-10-14 08:39:36,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8411 states to 8411 states and 11770 transitions. [2020-10-14 08:39:36,466 INFO L78 Accepts]: Start accepts. Automaton has 8411 states and 11770 transitions. Word has length 64 [2020-10-14 08:39:36,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:36,466 INFO L479 AbstractCegarLoop]: Abstraction has 8411 states and 11770 transitions. [2020-10-14 08:39:36,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:39:36,467 INFO L276 IsEmpty]: Start isEmpty. Operand 8411 states and 11770 transitions. [2020-10-14 08:39:36,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 08:39:36,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:36,471 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:39:36,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:39:36,471 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:36,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:36,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1432884482, now seen corresponding path program 1 times [2020-10-14 08:39:36,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:36,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857068399] [2020-10-14 08:39:36,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:36,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:36,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:36,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:36,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:36,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:37,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:37,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:37,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:37,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:37,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:38,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:38,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:39,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:39,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:41,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:41,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 08:39:41,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:39:41,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:39:41,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:41,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:41,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:39:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:39:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 08:39:41,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:41,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:41,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:41,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:41,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:41,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:41,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:39:41,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:41,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:41,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:41,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:41,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:41,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:39:41,637 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:41,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857068399] [2020-10-14 08:39:41,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:39:41,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 08:39:41,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388328405] [2020-10-14 08:39:41,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:39:41,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:41,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:39:41,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:39:41,643 INFO L87 Difference]: Start difference. First operand 8411 states and 11770 transitions. Second operand 6 states. [2020-10-14 08:39:42,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:42,895 INFO L93 Difference]: Finished difference Result 14001 states and 19746 transitions. [2020-10-14 08:39:42,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:39:42,896 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-14 08:39:42,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:42,926 INFO L225 Difference]: With dead ends: 14001 [2020-10-14 08:39:42,926 INFO L226 Difference]: Without dead ends: 11551 [2020-10-14 08:39:42,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:39:42,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11551 states. [2020-10-14 08:39:43,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11551 to 11051. [2020-10-14 08:39:43,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11051 states. [2020-10-14 08:39:43,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11051 states to 11051 states and 15610 transitions. [2020-10-14 08:39:43,932 INFO L78 Accepts]: Start accepts. Automaton has 11051 states and 15610 transitions. Word has length 64 [2020-10-14 08:39:43,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:43,932 INFO L479 AbstractCegarLoop]: Abstraction has 11051 states and 15610 transitions. [2020-10-14 08:39:43,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:39:43,933 INFO L276 IsEmpty]: Start isEmpty. Operand 11051 states and 15610 transitions. [2020-10-14 08:39:43,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 08:39:43,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:43,935 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:39:43,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:39:43,935 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:43,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:43,936 INFO L82 PathProgramCache]: Analyzing trace with hash 2004431101, now seen corresponding path program 1 times [2020-10-14 08:39:43,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:43,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160768272] [2020-10-14 08:39:43,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:43,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:43,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:43,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:44,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:44,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:44,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:44,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:44,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:45,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:48,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:48,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:48,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 08:39:48,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:39:48,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:39:48,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:48,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:39:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 08:39:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 08:39:48,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:49,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:49,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:49,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:49,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:49,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:49,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 08:39:49,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:49,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:49,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:49,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:49,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:49,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:49,108 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 08:39:49,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160768272] [2020-10-14 08:39:49,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:39:49,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 08:39:49,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214729138] [2020-10-14 08:39:49,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:39:49,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:49,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:39:49,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:39:49,111 INFO L87 Difference]: Start difference. First operand 11051 states and 15610 transitions. Second operand 5 states. [2020-10-14 08:39:50,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:50,644 INFO L93 Difference]: Finished difference Result 26789 states and 37873 transitions. [2020-10-14 08:39:50,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:39:50,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-14 08:39:50,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:50,685 INFO L225 Difference]: With dead ends: 26789 [2020-10-14 08:39:50,686 INFO L226 Difference]: Without dead ends: 17299 [2020-10-14 08:39:50,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:39:50,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17299 states. [2020-10-14 08:39:52,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17299 to 17295. [2020-10-14 08:39:52,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17295 states. [2020-10-14 08:39:52,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17295 states to 17295 states and 23966 transitions. [2020-10-14 08:39:52,123 INFO L78 Accepts]: Start accepts. Automaton has 17295 states and 23966 transitions. Word has length 65 [2020-10-14 08:39:52,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:52,123 INFO L479 AbstractCegarLoop]: Abstraction has 17295 states and 23966 transitions. [2020-10-14 08:39:52,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:39:52,124 INFO L276 IsEmpty]: Start isEmpty. Operand 17295 states and 23966 transitions. [2020-10-14 08:39:52,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 08:39:52,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:52,126 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:39:52,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:39:52,126 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:52,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:52,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1970498434, now seen corresponding path program 1 times [2020-10-14 08:39:52,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:52,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839010780] [2020-10-14 08:39:52,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:52,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:52,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:52,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:52,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:52,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:52,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:52,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:53,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:53,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:53,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:54,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:54,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:54,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:57,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:57,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 08:39:57,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:39:57,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:39:57,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:57,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:57,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:39:57,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:39:57,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 08:39:57,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:57,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:57,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:57,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:57,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:57,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:57,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:39:57,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:57,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:57,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:39:57,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:57,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:39:57,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:57,408 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:57,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839010780] [2020-10-14 08:39:57,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:39:57,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 08:39:57,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833763636] [2020-10-14 08:39:57,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:39:57,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:57,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:39:57,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:39:57,410 INFO L87 Difference]: Start difference. First operand 17295 states and 23966 transitions. Second operand 11 states. [2020-10-14 08:39:57,572 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-14 08:40:03,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:03,063 INFO L93 Difference]: Finished difference Result 71901 states and 98208 transitions. [2020-10-14 08:40:03,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 08:40:03,068 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2020-10-14 08:40:03,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:03,194 INFO L225 Difference]: With dead ends: 71901 [2020-10-14 08:40:03,195 INFO L226 Difference]: Without dead ends: 54631 [2020-10-14 08:40:03,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=350, Invalid=982, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 08:40:03,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54631 states. [2020-10-14 08:40:06,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54631 to 30001. [2020-10-14 08:40:06,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30001 states. [2020-10-14 08:40:06,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30001 states to 30001 states and 41358 transitions. [2020-10-14 08:40:06,830 INFO L78 Accepts]: Start accepts. Automaton has 30001 states and 41358 transitions. Word has length 66 [2020-10-14 08:40:06,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:40:06,831 INFO L479 AbstractCegarLoop]: Abstraction has 30001 states and 41358 transitions. [2020-10-14 08:40:06,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 08:40:06,831 INFO L276 IsEmpty]: Start isEmpty. Operand 30001 states and 41358 transitions. [2020-10-14 08:40:06,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 08:40:06,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:06,833 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:40:06,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:40:06,833 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:06,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:06,834 INFO L82 PathProgramCache]: Analyzing trace with hash 95078741, now seen corresponding path program 1 times [2020-10-14 08:40:06,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:06,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104941725] [2020-10-14 08:40:06,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:06,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:06,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:07,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:07,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:07,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:07,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:07,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:07,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:07,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:08,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:08,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:08,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:08,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:08,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:08,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:09,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:10,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:10,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:10,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:11,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:11,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:11,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 08:40:11,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 08:40:11,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:40:11,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:11,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:11,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:40:11,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:40:11,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 08:40:11,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:12,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:40:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:12,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:12,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:12,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:40:12,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:40:12,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:40:12,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:12,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:12,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:40:12,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:40:12,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:40:12,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:12,138 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:40:12,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104941725] [2020-10-14 08:40:12,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:40:12,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 08:40:12,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309934304] [2020-10-14 08:40:12,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:40:12,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:40:12,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:40:12,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:40:12,140 INFO L87 Difference]: Start difference. First operand 30001 states and 41358 transitions. Second operand 11 states. [2020-10-14 08:40:33,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:33,630 INFO L93 Difference]: Finished difference Result 210997 states and 287294 transitions. [2020-10-14 08:40:33,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-14 08:40:33,631 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2020-10-14 08:40:33,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:33,918 INFO L225 Difference]: With dead ends: 210997 [2020-10-14 08:40:33,919 INFO L226 Difference]: Without dead ends: 184976 [2020-10-14 08:40:34,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=417, Invalid=1935, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 08:40:34,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184976 states. [2020-10-14 08:40:42,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184976 to 77201. [2020-10-14 08:40:42,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77201 states. [2020-10-14 08:40:42,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77201 states to 77201 states and 106112 transitions. [2020-10-14 08:40:42,113 INFO L78 Accepts]: Start accepts. Automaton has 77201 states and 106112 transitions. Word has length 66 [2020-10-14 08:40:42,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:40:42,114 INFO L479 AbstractCegarLoop]: Abstraction has 77201 states and 106112 transitions. [2020-10-14 08:40:42,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 08:40:42,114 INFO L276 IsEmpty]: Start isEmpty. Operand 77201 states and 106112 transitions. [2020-10-14 08:40:42,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 08:40:42,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:42,117 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:40:42,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 08:40:42,117 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:42,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:42,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1420019825, now seen corresponding path program 1 times [2020-10-14 08:40:42,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:42,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662365253] [2020-10-14 08:40:42,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:42,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:42,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:42,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:42,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:42,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:42,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:42,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:42,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:42,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:43,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:43,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:44,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:46,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:46,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:46,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:47,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:47,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:47,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:47,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 08:40:47,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 08:40:47,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-14 08:40:47,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:47,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:47,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:40:47,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:40:47,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 08:40:47,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:47,371 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 27 [2020-10-14 08:40:47,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:40:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:47,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:47,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:47,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:40:47,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:40:47,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 08:40:47,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:47,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:47,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:40:47,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:40:47,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:40:47,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:47,505 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:40:47,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662365253] [2020-10-14 08:40:47,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:40:47,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 08:40:47,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601780921] [2020-10-14 08:40:47,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:40:47,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:40:47,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:40:47,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:40:47,507 INFO L87 Difference]: Start difference. First operand 77201 states and 106112 transitions. Second operand 10 states. [2020-10-14 08:41:04,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:04,741 INFO L93 Difference]: Finished difference Result 185990 states and 253264 transitions. [2020-10-14 08:41:04,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 08:41:04,741 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-10-14 08:41:04,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:04,966 INFO L225 Difference]: With dead ends: 185990 [2020-10-14 08:41:04,966 INFO L226 Difference]: Without dead ends: 138107 [2020-10-14 08:41:05,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-10-14 08:41:05,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138107 states. [2020-10-14 08:41:16,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138107 to 78233. [2020-10-14 08:41:16,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78233 states. [2020-10-14 08:41:16,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78233 states to 78233 states and 107660 transitions. [2020-10-14 08:41:16,798 INFO L78 Accepts]: Start accepts. Automaton has 78233 states and 107660 transitions. Word has length 66 [2020-10-14 08:41:16,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:16,798 INFO L479 AbstractCegarLoop]: Abstraction has 78233 states and 107660 transitions. [2020-10-14 08:41:16,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:41:16,798 INFO L276 IsEmpty]: Start isEmpty. Operand 78233 states and 107660 transitions. [2020-10-14 08:41:16,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 08:41:16,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:16,801 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:41:16,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 08:41:16,802 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:16,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:16,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1350451652, now seen corresponding path program 1 times [2020-10-14 08:41:16,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:16,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572357] [2020-10-14 08:41:16,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:16,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:16,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:17,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:17,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:17,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:18,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:18,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 08:41:18,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:41:18,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1759 [2020-10-14 08:41:18,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:18,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:18,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:41:18,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:41:18,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 08:41:18,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:18,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:18,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:18,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:18,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:18,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:18,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:41:18,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:18,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:18,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:41:18,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:18,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:41:18,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:18,991 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:41:18,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572357] [2020-10-14 08:41:18,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:41:18,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 08:41:18,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499109004] [2020-10-14 08:41:18,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:41:18,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:18,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:41:18,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:41:18,993 INFO L87 Difference]: Start difference. First operand 78233 states and 107660 transitions. Second operand 10 states. [2020-10-14 08:41:19,232 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-14 08:41:53,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:53,123 INFO L93 Difference]: Finished difference Result 295799 states and 403801 transitions. [2020-10-14 08:41:53,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 08:41:53,124 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-10-14 08:41:53,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:53,495 INFO L225 Difference]: With dead ends: 295799 [2020-10-14 08:41:53,495 INFO L226 Difference]: Without dead ends: 241407 [2020-10-14 08:41:53,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2020-10-14 08:41:53,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241407 states. [2020-10-14 08:42:14,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241407 to 132112. [2020-10-14 08:42:14,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132112 states. [2020-10-14 08:42:14,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132112 states to 132112 states and 182491 transitions. [2020-10-14 08:42:14,677 INFO L78 Accepts]: Start accepts. Automaton has 132112 states and 182491 transitions. Word has length 67 [2020-10-14 08:42:14,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:14,677 INFO L479 AbstractCegarLoop]: Abstraction has 132112 states and 182491 transitions. [2020-10-14 08:42:14,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:42:14,677 INFO L276 IsEmpty]: Start isEmpty. Operand 132112 states and 182491 transitions. [2020-10-14 08:42:14,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 08:42:14,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:14,680 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:42:14,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 08:42:14,680 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:14,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:14,680 INFO L82 PathProgramCache]: Analyzing trace with hash 100191498, now seen corresponding path program 1 times [2020-10-14 08:42:14,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:14,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322471534] [2020-10-14 08:42:14,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:14,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:14,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:14,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:14,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:14,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:15,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:15,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:15,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:15,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:15,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:15,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:15,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:19,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:19,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 08:42:19,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:42:19,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4405 [2020-10-14 08:42:19,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:19,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:19,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:42:19,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 08:42:19,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 08:42:19,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:19,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:19,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:19,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:19,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:19,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:19,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 08:42:19,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:19,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:19,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:42:19,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:19,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:42:19,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:19,218 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:42:19,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322471534] [2020-10-14 08:42:19,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:19,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:42:19,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617341515] [2020-10-14 08:42:19,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:42:19,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:19,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:42:19,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:42:19,219 INFO L87 Difference]: Start difference. First operand 132112 states and 182491 transitions. Second operand 4 states.