/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:11:29,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:11:29,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:11:29,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:11:29,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:11:29,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:11:29,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:11:29,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:11:29,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:11:29,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:11:29,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:11:29,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:11:29,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:11:29,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:11:29,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:11:29,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:11:29,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:11:29,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:11:29,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:11:29,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:11:29,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:11:29,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:11:29,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:11:29,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:11:29,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:11:29,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:11:29,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:11:29,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:11:29,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:11:29,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:11:29,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:11:29,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:11:29,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:11:29,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:11:29,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:11:29,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:11:29,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:11:29,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:11:29,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:11:29,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:11:29,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:11:29,513 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 20:11:29,555 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:11:29,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:11:29,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:11:29,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:11:29,558 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:11:29,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:11:29,558 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:11:29,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:11:29,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:11:29,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:11:29,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:11:29,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:11:29,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:11:29,561 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:11:29,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:11:29,561 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:11:29,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:11:29,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:11:29,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:11:29,562 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:11:29,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:11:29,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:11:29,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:11:29,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:11:29,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:11:29,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:11:29,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:11:29,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:11:29,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:11:29,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:11:29,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:11:29,866 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:11:29,869 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:11:29,871 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:11:29,871 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:11:29,872 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-12 20:11:29,930 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7382821da/0511f5dffa7d4cbbbf61c0ce93106c4b/FLAG7941bc930 [2020-10-12 20:11:30,500 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:11:30,501 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-12 20:11:30,513 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7382821da/0511f5dffa7d4cbbbf61c0ce93106c4b/FLAG7941bc930 [2020-10-12 20:11:30,743 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7382821da/0511f5dffa7d4cbbbf61c0ce93106c4b [2020-10-12 20:11:30,751 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:11:30,753 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:11:30,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:11:30,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:11:30,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:11:30,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:11:30" (1/1) ... [2020-10-12 20:11:30,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b33d7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:11:30, skipping insertion in model container [2020-10-12 20:11:30,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:11:30" (1/1) ... [2020-10-12 20:11:30,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:11:30,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:11:31,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:11:31,372 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:11:31,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:11:31,824 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:11:31,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:11:31 WrapperNode [2020-10-12 20:11:31,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:11:31,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:11:31,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:11:31,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:11:31,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:11:31" (1/1) ... [2020-10-12 20:11:31,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:11:31" (1/1) ... [2020-10-12 20:11:31,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:11:31" (1/1) ... [2020-10-12 20:11:31,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:11:31" (1/1) ... [2020-10-12 20:11:31,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:11:31" (1/1) ... [2020-10-12 20:11:31,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:11:31" (1/1) ... [2020-10-12 20:11:31,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:11:31" (1/1) ... [2020-10-12 20:11:31,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:11:31,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:11:31,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:11:31,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:11:31,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:11:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:11:32,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:11:32,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:11:32,006 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:11:32,006 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:11:32,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:11:32,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:11:32,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:11:32,008 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:11:32,008 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:11:32,008 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:11:32,008 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:11:32,008 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:11:32,009 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:11:32,009 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:11:32,009 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:11:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:11:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 20:11:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-12 20:11:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:11:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:11:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:11:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:11:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:11:33,456 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:11:33,456 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:11:33,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:11:33 BoogieIcfgContainer [2020-10-12 20:11:33,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:11:33,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:11:33,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:11:33,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:11:33,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:11:30" (1/3) ... [2020-10-12 20:11:33,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6e50e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:11:33, skipping insertion in model container [2020-10-12 20:11:33,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:11:31" (2/3) ... [2020-10-12 20:11:33,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6e50e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:11:33, skipping insertion in model container [2020-10-12 20:11:33,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:11:33" (3/3) ... [2020-10-12 20:11:33,474 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-12 20:11:33,485 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:11:33,494 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:11:33,509 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:11:33,539 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:11:33,539 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:11:33,540 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:11:33,540 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:11:33,540 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:11:33,540 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:11:33,540 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:11:33,541 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:11:33,575 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states. [2020-10-12 20:11:33,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:11:33,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:11:33,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:11:33,599 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:11:33,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:11:33,607 INFO L82 PathProgramCache]: Analyzing trace with hash 2114966655, now seen corresponding path program 1 times [2020-10-12 20:11:33,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:11:33,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250759391] [2020-10-12 20:11:33,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:11:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:11:34,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:34,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:34,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:34,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:34,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:35,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:35,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:35,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:35,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:37,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:38,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:11:38,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 20:11:38,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:11:38,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 20:11:39,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:11:39,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:11:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 20:11:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 20:11:39,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:11:39,447 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:11:39,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:11:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:11:39,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:39,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:11:39,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:11:39,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:11:39,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 20:11:39,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:11:39,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:11:39,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:11:39,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:11:39,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:11:39,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:11:39,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250759391] [2020-10-12 20:11:39,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:11:39,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:11:39,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251858235] [2020-10-12 20:11:39,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:11:39,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:11:39,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:11:39,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:11:39,549 INFO L87 Difference]: Start difference. First operand 492 states. Second operand 5 states. [2020-10-12 20:11:42,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:11:42,356 INFO L93 Difference]: Finished difference Result 941 states and 1526 transitions. [2020-10-12 20:11:42,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:11:42,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-12 20:11:42,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:11:42,381 INFO L225 Difference]: With dead ends: 941 [2020-10-12 20:11:42,381 INFO L226 Difference]: Without dead ends: 488 [2020-10-12 20:11:42,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:11:42,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-10-12 20:11:42,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2020-10-12 20:11:42,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2020-10-12 20:11:42,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 752 transitions. [2020-10-12 20:11:42,475 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 752 transitions. Word has length 123 [2020-10-12 20:11:42,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:11:42,476 INFO L479 AbstractCegarLoop]: Abstraction has 488 states and 752 transitions. [2020-10-12 20:11:42,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:11:42,476 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 752 transitions. [2020-10-12 20:11:42,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-12 20:11:42,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:11:42,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:11:42,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:11:42,482 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:11:42,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:11:42,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1878866601, now seen corresponding path program 1 times [2020-10-12 20:11:42,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:11:42,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713518914] [2020-10-12 20:11:42,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:11:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:11:42,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:42,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:42,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:42,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:42,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:42,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:43,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:43,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:43,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:43,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:47,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:11:47,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-12 20:11:47,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:11:47,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 20:11:47,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:11:47,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:11:47,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:11:47,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 20:11:47,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:11:47,871 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:11:47,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:11:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:11:47,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:47,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:11:47,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:11:47,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:11:47,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 20:11:47,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:11:47,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:11:47,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:11:47,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:11:47,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:11:47,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:11:47,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713518914] [2020-10-12 20:11:47,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:11:47,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:11:47,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925241061] [2020-10-12 20:11:47,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:11:47,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:11:47,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:11:47,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:11:47,965 INFO L87 Difference]: Start difference. First operand 488 states and 752 transitions. Second operand 9 states. [2020-10-12 20:11:48,273 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 20:11:52,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:11:52,900 INFO L93 Difference]: Finished difference Result 3112 states and 4945 transitions. [2020-10-12 20:11:52,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:11:52,900 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 163 [2020-10-12 20:11:52,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:11:52,918 INFO L225 Difference]: With dead ends: 3112 [2020-10-12 20:11:52,918 INFO L226 Difference]: Without dead ends: 2780 [2020-10-12 20:11:52,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:11:52,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2780 states. [2020-10-12 20:11:52,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2780 to 913. [2020-10-12 20:11:52,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 913 states. [2020-10-12 20:11:52,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1426 transitions. [2020-10-12 20:11:52,996 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1426 transitions. Word has length 163 [2020-10-12 20:11:52,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:11:52,997 INFO L479 AbstractCegarLoop]: Abstraction has 913 states and 1426 transitions. [2020-10-12 20:11:52,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:11:52,997 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1426 transitions. [2020-10-12 20:11:53,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-12 20:11:53,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:11:53,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:11:53,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:11:53,003 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:11:53,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:11:53,004 INFO L82 PathProgramCache]: Analyzing trace with hash 591997696, now seen corresponding path program 1 times [2020-10-12 20:11:53,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:11:53,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390891275] [2020-10-12 20:11:53,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:11:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:11:53,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:53,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:53,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:53,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:53,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:53,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:53,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:53,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:53,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:53,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:53,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:58,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:11:58,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 20:11:58,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:11:58,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 20:11:58,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:11:58,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:11:58,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:11:58,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 20:11:58,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:11:58,487 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:11:58,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:11:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:11:58,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:58,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:11:58,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:11:58,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:11:58,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 20:11:58,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:11:58,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:11:58,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:11:58,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:11:58,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:11:58,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:11:58,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390891275] [2020-10-12 20:11:58,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:11:58,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:11:58,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977853019] [2020-10-12 20:11:58,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:11:58,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:11:58,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:11:58,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:11:58,662 INFO L87 Difference]: Start difference. First operand 913 states and 1426 transitions. Second operand 9 states. [2020-10-12 20:11:59,076 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-12 20:12:03,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:12:03,925 INFO L93 Difference]: Finished difference Result 4740 states and 7526 transitions. [2020-10-12 20:12:03,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 20:12:03,925 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2020-10-12 20:12:03,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:12:03,948 INFO L225 Difference]: With dead ends: 4740 [2020-10-12 20:12:03,948 INFO L226 Difference]: Without dead ends: 4408 [2020-10-12 20:12:03,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 20:12:03,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4408 states. [2020-10-12 20:12:04,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4408 to 1644. [2020-10-12 20:12:04,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1644 states. [2020-10-12 20:12:04,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2589 transitions. [2020-10-12 20:12:04,059 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2589 transitions. Word has length 166 [2020-10-12 20:12:04,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:12:04,060 INFO L479 AbstractCegarLoop]: Abstraction has 1644 states and 2589 transitions. [2020-10-12 20:12:04,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:12:04,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2589 transitions. [2020-10-12 20:12:04,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-12 20:12:04,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:12:04,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:12:04,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:12:04,067 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:12:04,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:12:04,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1398783503, now seen corresponding path program 1 times [2020-10-12 20:12:04,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:12:04,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688762736] [2020-10-12 20:12:04,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:12:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:04,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:04,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:04,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:04,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:04,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:04,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:04,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:04,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:04,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:06,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:06,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:06,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:09,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:09,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 20:12:09,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:12:09,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 20:12:09,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:09,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:12:09,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:12:09,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 20:12:09,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:12:09,502 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:12:09,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:12:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:09,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:09,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:09,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:12:09,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:12:09,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:12:09,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:09,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:12:09,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:12:09,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:12:09,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:09,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:12:09,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688762736] [2020-10-12 20:12:09,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:12:09,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:12:09,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428455129] [2020-10-12 20:12:09,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:12:09,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:12:09,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:12:09,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:12:09,579 INFO L87 Difference]: Start difference. First operand 1644 states and 2589 transitions. Second operand 9 states. [2020-10-12 20:12:09,906 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-12 20:12:14,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:12:14,094 INFO L93 Difference]: Finished difference Result 5742 states and 9102 transitions. [2020-10-12 20:12:14,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 20:12:14,095 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2020-10-12 20:12:14,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:12:14,119 INFO L225 Difference]: With dead ends: 5742 [2020-10-12 20:12:14,120 INFO L226 Difference]: Without dead ends: 5193 [2020-10-12 20:12:14,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 20:12:14,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5193 states. [2020-10-12 20:12:14,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5193 to 2033. [2020-10-12 20:12:14,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2033 states. [2020-10-12 20:12:14,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 3209 transitions. [2020-10-12 20:12:14,260 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 3209 transitions. Word has length 166 [2020-10-12 20:12:14,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:12:14,261 INFO L479 AbstractCegarLoop]: Abstraction has 2033 states and 3209 transitions. [2020-10-12 20:12:14,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:12:14,261 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 3209 transitions. [2020-10-12 20:12:14,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-12 20:12:14,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:12:14,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:12:14,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:12:14,267 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:12:14,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:12:14,268 INFO L82 PathProgramCache]: Analyzing trace with hash -762744584, now seen corresponding path program 1 times [2020-10-12 20:12:14,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:12:14,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154184734] [2020-10-12 20:12:14,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:12:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:14,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:14,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:14,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:14,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:14,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:14,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:14,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:14,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:14,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:16,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:16,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:16,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:19,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:19,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 20:12:19,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:12:19,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 20:12:19,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:12:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:12:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 20:12:19,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:19,705 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:12:19,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:12:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:19,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:19,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:19,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:12:19,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:12:19,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:12:19,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:19,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:12:19,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:12:19,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:12:19,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 20:12:19,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:12:19,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154184734] [2020-10-12 20:12:19,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:12:19,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:12:19,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134806604] [2020-10-12 20:12:19,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:12:19,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:12:19,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:12:19,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:12:19,834 INFO L87 Difference]: Start difference. First operand 2033 states and 3209 transitions. Second operand 9 states. [2020-10-12 20:12:20,235 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-12 20:12:23,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:12:23,869 INFO L93 Difference]: Finished difference Result 6230 states and 9876 transitions. [2020-10-12 20:12:23,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 20:12:23,870 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2020-10-12 20:12:23,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:12:23,894 INFO L225 Difference]: With dead ends: 6230 [2020-10-12 20:12:23,895 INFO L226 Difference]: Without dead ends: 5681 [2020-10-12 20:12:23,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 20:12:23,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5681 states. [2020-10-12 20:12:24,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5681 to 2404. [2020-10-12 20:12:24,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2404 states. [2020-10-12 20:12:24,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2404 states to 2404 states and 3800 transitions. [2020-10-12 20:12:24,059 INFO L78 Accepts]: Start accepts. Automaton has 2404 states and 3800 transitions. Word has length 166 [2020-10-12 20:12:24,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:12:24,060 INFO L479 AbstractCegarLoop]: Abstraction has 2404 states and 3800 transitions. [2020-10-12 20:12:24,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:12:24,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2404 states and 3800 transitions. [2020-10-12 20:12:24,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-12 20:12:24,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:12:24,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:12:24,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:12:24,067 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:12:24,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:12:24,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1199739064, now seen corresponding path program 1 times [2020-10-12 20:12:24,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:12:24,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525393164] [2020-10-12 20:12:24,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:12:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:24,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:24,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:24,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:24,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:24,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:24,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:24,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:24,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:24,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:25,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:25,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:25,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:25,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:25,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:29,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:29,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 20:12:29,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:12:29,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:12:29,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:29,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:12:29,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:12:29,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 20:12:29,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:29,378 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:12:29,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:12:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:29,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:29,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:29,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:12:29,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:12:29,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:12:29,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:29,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:12:29,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:12:29,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:12:29,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:29,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:12:29,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525393164] [2020-10-12 20:12:29,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:12:29,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:12:29,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279856256] [2020-10-12 20:12:29,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:12:29,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:12:29,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:12:29,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:12:29,468 INFO L87 Difference]: Start difference. First operand 2404 states and 3800 transitions. Second operand 9 states. [2020-10-12 20:12:29,770 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-12 20:12:32,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:12:32,627 INFO L93 Difference]: Finished difference Result 6592 states and 10447 transitions. [2020-10-12 20:12:32,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 20:12:32,628 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2020-10-12 20:12:32,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:12:32,652 INFO L225 Difference]: With dead ends: 6592 [2020-10-12 20:12:32,653 INFO L226 Difference]: Without dead ends: 6043 [2020-10-12 20:12:32,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 20:12:32,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6043 states. [2020-10-12 20:12:32,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6043 to 2739. [2020-10-12 20:12:32,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2739 states. [2020-10-12 20:12:32,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 4333 transitions. [2020-10-12 20:12:32,858 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 4333 transitions. Word has length 166 [2020-10-12 20:12:32,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:12:32,858 INFO L479 AbstractCegarLoop]: Abstraction has 2739 states and 4333 transitions. [2020-10-12 20:12:32,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:12:32,858 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 4333 transitions. [2020-10-12 20:12:32,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-12 20:12:32,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:12:32,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:12:32,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:12:32,866 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:12:32,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:12:32,867 INFO L82 PathProgramCache]: Analyzing trace with hash -654873067, now seen corresponding path program 1 times [2020-10-12 20:12:32,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:12:32,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289438709] [2020-10-12 20:12:32,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:12:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:32,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:32,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:32,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:33,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:33,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:33,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:33,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:33,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:33,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:33,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:33,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:36,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:36,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:36,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:37,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:37,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 20:12:37,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:12:37,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 20:12:37,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:37,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:12:37,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:12:37,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 20:12:37,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:38,184 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:12:38,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:12:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:38,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:38,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:38,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:12:38,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:12:38,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 20:12:38,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:38,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:12:38,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:12:38,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:12:38,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:38,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:12:38,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289438709] [2020-10-12 20:12:38,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:12:38,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:12:38,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755890803] [2020-10-12 20:12:38,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:12:38,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:12:38,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:12:38,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:12:38,257 INFO L87 Difference]: Start difference. First operand 2739 states and 4333 transitions. Second operand 9 states. [2020-10-12 20:12:38,556 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-12 20:12:41,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:12:41,739 INFO L93 Difference]: Finished difference Result 6990 states and 11076 transitions. [2020-10-12 20:12:41,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 20:12:41,740 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2020-10-12 20:12:41,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:12:41,753 INFO L225 Difference]: With dead ends: 6990 [2020-10-12 20:12:41,753 INFO L226 Difference]: Without dead ends: 6441 [2020-10-12 20:12:41,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 20:12:41,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6441 states. [2020-10-12 20:12:41,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6441 to 3092. [2020-10-12 20:12:41,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3092 states. [2020-10-12 20:12:41,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 4895 transitions. [2020-10-12 20:12:41,976 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 4895 transitions. Word has length 166 [2020-10-12 20:12:41,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:12:41,977 INFO L479 AbstractCegarLoop]: Abstraction has 3092 states and 4895 transitions. [2020-10-12 20:12:41,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:12:41,977 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 4895 transitions. [2020-10-12 20:12:41,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-12 20:12:41,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:12:41,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:12:41,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:12:41,986 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:12:41,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:12:41,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1830647424, now seen corresponding path program 1 times [2020-10-12 20:12:41,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:12:41,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401182079] [2020-10-12 20:12:41,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:12:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:42,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:42,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:42,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:42,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:42,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:42,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:42,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:42,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:42,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:42,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:43,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:43,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:47,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:47,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 20:12:47,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:12:47,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:12:47,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:47,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:12:47,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 20:12:47,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 20:12:47,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:47,325 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:12:47,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:12:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:47,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:47,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:47,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:12:47,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:12:47,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:12:47,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:47,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:12:47,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:12:47,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:12:47,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:47,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:12:47,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401182079] [2020-10-12 20:12:47,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:12:47,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:12:47,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439256800] [2020-10-12 20:12:47,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:12:47,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:12:47,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:12:47,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:12:47,385 INFO L87 Difference]: Start difference. First operand 3092 states and 4895 transitions. Second operand 9 states. [2020-10-12 20:12:47,715 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-12 20:12:51,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:12:51,223 INFO L93 Difference]: Finished difference Result 7676 states and 12169 transitions. [2020-10-12 20:12:51,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 20:12:51,224 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2020-10-12 20:12:51,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:12:51,241 INFO L225 Difference]: With dead ends: 7676 [2020-10-12 20:12:51,241 INFO L226 Difference]: Without dead ends: 7127 [2020-10-12 20:12:51,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 20:12:51,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7127 states. [2020-10-12 20:12:51,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7127 to 3499. [2020-10-12 20:12:51,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3499 states. [2020-10-12 20:12:51,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3499 states to 3499 states and 5544 transitions. [2020-10-12 20:12:51,534 INFO L78 Accepts]: Start accepts. Automaton has 3499 states and 5544 transitions. Word has length 166 [2020-10-12 20:12:51,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:12:51,535 INFO L479 AbstractCegarLoop]: Abstraction has 3499 states and 5544 transitions. [2020-10-12 20:12:51,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:12:51,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3499 states and 5544 transitions. [2020-10-12 20:12:51,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-12 20:12:51,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:12:51,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:12:51,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:12:51,543 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:12:51,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:12:51,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1845840577, now seen corresponding path program 1 times [2020-10-12 20:12:51,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:12:51,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137686837] [2020-10-12 20:12:51,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:12:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:51,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:51,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:51,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:51,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:51,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:51,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:51,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:51,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:51,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:51,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:53,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:56,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:56,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-12 20:12:56,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:12:56,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 20:12:56,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:56,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:12:56,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-12 20:12:56,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 20:12:56,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:56,821 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:12:56,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:12:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:56,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:56,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:56,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:12:56,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:12:56,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:12:56,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:56,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:12:56,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:12:56,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:12:56,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:56,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:12:56,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137686837] [2020-10-12 20:12:56,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:12:56,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:12:56,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294907731] [2020-10-12 20:12:56,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:12:56,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:12:56,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:12:56,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:12:56,874 INFO L87 Difference]: Start difference. First operand 3499 states and 5544 transitions. Second operand 4 states. [2020-10-12 20:13:00,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:13:00,135 INFO L93 Difference]: Finished difference Result 9430 states and 15005 transitions. [2020-10-12 20:13:00,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:13:00,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-10-12 20:13:00,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:13:00,153 INFO L225 Difference]: With dead ends: 9430 [2020-10-12 20:13:00,153 INFO L226 Difference]: Without dead ends: 6653 [2020-10-12 20:13:00,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:13:00,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6653 states. [2020-10-12 20:13:00,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6653 to 6520. [2020-10-12 20:13:00,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6520 states. [2020-10-12 20:13:00,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6520 states to 6520 states and 10319 transitions. [2020-10-12 20:13:00,691 INFO L78 Accepts]: Start accepts. Automaton has 6520 states and 10319 transitions. Word has length 167 [2020-10-12 20:13:00,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:13:00,691 INFO L479 AbstractCegarLoop]: Abstraction has 6520 states and 10319 transitions. [2020-10-12 20:13:00,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:13:00,692 INFO L276 IsEmpty]: Start isEmpty. Operand 6520 states and 10319 transitions. [2020-10-12 20:13:00,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-12 20:13:00,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:13:00,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:13:00,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:13:00,705 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:13:00,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:13:00,706 INFO L82 PathProgramCache]: Analyzing trace with hash 171282130, now seen corresponding path program 1 times [2020-10-12 20:13:00,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:13:00,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726823089] [2020-10-12 20:13:00,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:13:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:00,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:00,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:00,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:00,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:00,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:00,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:00,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:01,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:01,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:01,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:01,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:05,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:05,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-12 20:13:05,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:13:05,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:13:05,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:05,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:13:05,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-12 20:13:05,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 20:13:05,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:06,021 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:13:06,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:13:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:06,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:06,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:06,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:13:06,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:13:06,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 20:13:06,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:06,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:13:06,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:13:06,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:13:06,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:06,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:13:06,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726823089] [2020-10-12 20:13:06,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:13:06,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:13:06,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894660812] [2020-10-12 20:13:06,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:13:06,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:13:06,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:13:06,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:13:06,083 INFO L87 Difference]: Start difference. First operand 6520 states and 10319 transitions. Second operand 4 states. [2020-10-12 20:13:06,325 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 20:13:09,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:13:09,338 INFO L93 Difference]: Finished difference Result 17638 states and 27936 transitions. [2020-10-12 20:13:09,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:13:09,338 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-10-12 20:13:09,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:13:09,359 INFO L225 Difference]: With dead ends: 17638 [2020-10-12 20:13:09,360 INFO L226 Difference]: Without dead ends: 12410 [2020-10-12 20:13:09,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:13:09,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12410 states. [2020-10-12 20:13:10,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12410 to 11836. [2020-10-12 20:13:10,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11836 states. [2020-10-12 20:13:10,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11836 states to 11836 states and 18668 transitions. [2020-10-12 20:13:10,174 INFO L78 Accepts]: Start accepts. Automaton has 11836 states and 18668 transitions. Word has length 167 [2020-10-12 20:13:10,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:13:10,174 INFO L479 AbstractCegarLoop]: Abstraction has 11836 states and 18668 transitions. [2020-10-12 20:13:10,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:13:10,174 INFO L276 IsEmpty]: Start isEmpty. Operand 11836 states and 18668 transitions. [2020-10-12 20:13:10,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-12 20:13:10,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:13:10,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:13:10,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:13:10,191 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:13:10,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:13:10,191 INFO L82 PathProgramCache]: Analyzing trace with hash 542182666, now seen corresponding path program 1 times [2020-10-12 20:13:10,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:13:10,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710130875] [2020-10-12 20:13:10,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:13:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:10,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:10,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:10,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:10,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:10,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:10,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:10,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:10,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:10,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:11,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:12,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:15,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:15,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-12 20:13:15,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:13:15,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:13:15,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:15,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:13:15,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-12 20:13:15,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 20:13:15,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:15,487 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:13:15,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:13:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:15,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:15,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:15,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:13:15,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:13:15,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 20:13:15,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:15,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:13:15,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:13:15,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:13:15,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:15,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:13:15,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710130875] [2020-10-12 20:13:15,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:13:15,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:13:15,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565536629] [2020-10-12 20:13:15,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:13:15,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:13:15,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:13:15,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:13:15,531 INFO L87 Difference]: Start difference. First operand 11836 states and 18668 transitions. Second operand 4 states. [2020-10-12 20:13:15,789 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 20:13:19,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:13:19,237 INFO L93 Difference]: Finished difference Result 29761 states and 46865 transitions. [2020-10-12 20:13:19,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:13:19,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2020-10-12 20:13:19,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:13:19,269 INFO L225 Difference]: With dead ends: 29761 [2020-10-12 20:13:19,269 INFO L226 Difference]: Without dead ends: 21827 [2020-10-12 20:13:19,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:13:19,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21827 states. [2020-10-12 20:13:20,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21827 to 20681. [2020-10-12 20:13:20,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20681 states. [2020-10-12 20:13:20,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20681 states to 20681 states and 32435 transitions. [2020-10-12 20:13:20,676 INFO L78 Accepts]: Start accepts. Automaton has 20681 states and 32435 transitions. Word has length 169 [2020-10-12 20:13:20,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:13:20,676 INFO L479 AbstractCegarLoop]: Abstraction has 20681 states and 32435 transitions. [2020-10-12 20:13:20,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:13:20,677 INFO L276 IsEmpty]: Start isEmpty. Operand 20681 states and 32435 transitions. [2020-10-12 20:13:20,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-12 20:13:20,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:13:20,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:13:20,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:13:20,703 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:13:20,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:13:20,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1664190580, now seen corresponding path program 1 times [2020-10-12 20:13:20,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:13:20,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999536102] [2020-10-12 20:13:20,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:13:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:20,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:20,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:20,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:20,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:20,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:20,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:20,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:21,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:21,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:23,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:25,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:25,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 20:13:25,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:13:25,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:13:25,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:25,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:13:25,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 20:13:25,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 20:13:25,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:25,969 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:13:25,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:13:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:25,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:25,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:25,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:13:25,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:13:25,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:13:25,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:25,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:13:25,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:13:25,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:13:25,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:26,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:13:26,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999536102] [2020-10-12 20:13:26,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:13:26,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:13:26,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429642808] [2020-10-12 20:13:26,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:13:26,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:13:26,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:13:26,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:13:26,010 INFO L87 Difference]: Start difference. First operand 20681 states and 32435 transitions. Second operand 4 states. [2020-10-12 20:13:26,254 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-12 20:13:30,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:13:30,449 INFO L93 Difference]: Finished difference Result 53759 states and 84218 transitions. [2020-10-12 20:13:30,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:13:30,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-10-12 20:13:30,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:13:30,495 INFO L225 Difference]: With dead ends: 53759 [2020-10-12 20:13:30,495 INFO L226 Difference]: Without dead ends: 33315 [2020-10-12 20:13:30,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:13:30,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33315 states. [2020-10-12 20:13:33,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33315 to 33313. [2020-10-12 20:13:33,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33313 states. [2020-10-12 20:13:33,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33313 states to 33313 states and 51970 transitions. [2020-10-12 20:13:33,621 INFO L78 Accepts]: Start accepts. Automaton has 33313 states and 51970 transitions. Word has length 171 [2020-10-12 20:13:33,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:13:33,621 INFO L479 AbstractCegarLoop]: Abstraction has 33313 states and 51970 transitions. [2020-10-12 20:13:33,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:13:33,621 INFO L276 IsEmpty]: Start isEmpty. Operand 33313 states and 51970 transitions. [2020-10-12 20:13:33,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-12 20:13:33,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:13:33,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:13:33,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:13:33,655 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:13:33,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:13:33,655 INFO L82 PathProgramCache]: Analyzing trace with hash 77265642, now seen corresponding path program 1 times [2020-10-12 20:13:33,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:13:33,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775682729] [2020-10-12 20:13:33,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:13:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:33,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:33,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:33,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:33,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:33,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:33,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:34,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:38,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:38,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:38,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:38,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:38,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-12 20:13:38,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:13:38,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 20:13:38,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:38,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:13:38,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-12 20:13:38,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 20:13:38,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:13:39,070 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:13:39,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:13:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:39,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:39,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:39,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:13:39,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:13:39,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:13:39,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:39,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:13:39,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:13:39,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:13:39,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:39,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:13:39,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775682729] [2020-10-12 20:13:39,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:13:39,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:13:39,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935114085] [2020-10-12 20:13:39,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:13:39,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:13:39,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:13:39,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:13:39,122 INFO L87 Difference]: Start difference. First operand 33313 states and 51970 transitions. Second operand 5 states. [2020-10-12 20:13:44,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:13:44,271 INFO L93 Difference]: Finished difference Result 44839 states and 69847 transitions. [2020-10-12 20:13:44,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:13:44,272 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-12 20:13:44,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:13:44,313 INFO L225 Difference]: With dead ends: 44839 [2020-10-12 20:13:44,314 INFO L226 Difference]: Without dead ends: 44837 [2020-10-12 20:13:44,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:13:44,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44837 states. [2020-10-12 20:13:46,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44837 to 33569. [2020-10-12 20:13:46,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33569 states. [2020-10-12 20:13:46,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33569 states to 33569 states and 52226 transitions. [2020-10-12 20:13:46,699 INFO L78 Accepts]: Start accepts. Automaton has 33569 states and 52226 transitions. Word has length 173 [2020-10-12 20:13:46,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:13:46,700 INFO L479 AbstractCegarLoop]: Abstraction has 33569 states and 52226 transitions. [2020-10-12 20:13:46,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:13:46,700 INFO L276 IsEmpty]: Start isEmpty. Operand 33569 states and 52226 transitions. [2020-10-12 20:13:46,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-12 20:13:46,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:13:46,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:13:46,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:13:46,735 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:13:46,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:13:46,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1890112233, now seen corresponding path program 1 times [2020-10-12 20:13:46,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:13:46,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854592473] [2020-10-12 20:13:46,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:13:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:46,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:46,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:46,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:46,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:46,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:47,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:47,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:51,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:51,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:51,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:51,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 20:13:51,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:13:51,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 20:13:51,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:51,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:13:51,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-12 20:13:51,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 20:13:51,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:52,028 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:13:52,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:13:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:52,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:52,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:52,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:13:52,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:13:52,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:13:52,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:52,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:13:52,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:13:52,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:13:52,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:52,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:13:52,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854592473] [2020-10-12 20:13:52,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:13:52,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:13:52,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091364998] [2020-10-12 20:13:52,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:13:52,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:13:52,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:13:52,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:13:52,069 INFO L87 Difference]: Start difference. First operand 33569 states and 52226 transitions. Second operand 4 states. [2020-10-12 20:13:52,296 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 20:13:58,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:13:58,242 INFO L93 Difference]: Finished difference Result 77155 states and 119496 transitions. [2020-10-12 20:13:58,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:13:58,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2020-10-12 20:13:58,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:13:58,300 INFO L225 Difference]: With dead ends: 77155 [2020-10-12 20:13:58,300 INFO L226 Difference]: Without dead ends: 49481 [2020-10-12 20:13:58,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:13:58,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49481 states. [2020-10-12 20:14:03,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49481 to 48719. [2020-10-12 20:14:03,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48719 states. [2020-10-12 20:14:03,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48719 states to 48719 states and 75507 transitions. [2020-10-12 20:14:03,196 INFO L78 Accepts]: Start accepts. Automaton has 48719 states and 75507 transitions. Word has length 174 [2020-10-12 20:14:03,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:14:03,196 INFO L479 AbstractCegarLoop]: Abstraction has 48719 states and 75507 transitions. [2020-10-12 20:14:03,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:14:03,196 INFO L276 IsEmpty]: Start isEmpty. Operand 48719 states and 75507 transitions. [2020-10-12 20:14:03,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-12 20:14:03,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:14:03,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:14:03,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:14:03,248 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:14:03,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:14:03,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1276255190, now seen corresponding path program 1 times [2020-10-12 20:14:03,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:14:03,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76125280] [2020-10-12 20:14:03,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:14:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:14:03,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:03,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:03,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:03,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:03,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:03,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:03,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:05,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:08,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:14:08,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 20:14:08,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:14:08,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 20:14:08,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:14:08,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:14:08,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-12 20:14:08,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 20:14:08,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:14:08,519 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:14:08,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:14:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:14:08,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:08,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:14:08,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:14:08,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:14:08,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:14:08,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:14:08,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:14:08,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:14:08,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:14:08,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:14:08,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:14:08,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76125280] [2020-10-12 20:14:08,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:14:08,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:14:08,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256424601] [2020-10-12 20:14:08,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:14:08,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:14:08,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:14:08,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:14:08,558 INFO L87 Difference]: Start difference. First operand 48719 states and 75507 transitions. Second operand 4 states. [2020-10-12 20:14:08,810 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-12 20:14:16,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:14:16,023 INFO L93 Difference]: Finished difference Result 127897 states and 197490 transitions. [2020-10-12 20:14:16,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:14:16,024 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2020-10-12 20:14:16,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:14:16,111 INFO L225 Difference]: With dead ends: 127897 [2020-10-12 20:14:16,111 INFO L226 Difference]: Without dead ends: 79532 [2020-10-12 20:14:16,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:14:16,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79532 states. [2020-10-12 20:14:23,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79532 to 79530. [2020-10-12 20:14:23,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79530 states. [2020-10-12 20:14:23,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79530 states to 79530 states and 122057 transitions. [2020-10-12 20:14:23,265 INFO L78 Accepts]: Start accepts. Automaton has 79530 states and 122057 transitions. Word has length 174 [2020-10-12 20:14:23,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:14:23,265 INFO L479 AbstractCegarLoop]: Abstraction has 79530 states and 122057 transitions. [2020-10-12 20:14:23,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:14:23,265 INFO L276 IsEmpty]: Start isEmpty. Operand 79530 states and 122057 transitions. [2020-10-12 20:14:23,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-12 20:14:23,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:14:23,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:14:23,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:14:23,337 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:14:23,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:14:23,337 INFO L82 PathProgramCache]: Analyzing trace with hash 465235954, now seen corresponding path program 1 times [2020-10-12 20:14:23,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:14:23,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831702622] [2020-10-12 20:14:23,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:14:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:14:23,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:23,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:23,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:23,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:23,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:24,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:24,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:27,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:14:27,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-12 20:14:27,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:14:27,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3821 [2020-10-12 20:14:27,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:14:27,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:14:27,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 20:14:27,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-12 20:14:27,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:14:27,572 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:14:27,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:14:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:14:27,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:27,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:14:27,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:14:27,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:14:27,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:14:27,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:14:27,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:14:27,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:14:27,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:14:27,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:14:27,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:14:27,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831702622] [2020-10-12 20:14:27,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:14:27,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 20:14:27,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429194951] [2020-10-12 20:14:27,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 20:14:27,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:14:27,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 20:14:27,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:14:27,846 INFO L87 Difference]: Start difference. First operand 79530 states and 122057 transitions. Second operand 7 states. [2020-10-12 20:14:28,094 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 20:14:42,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:14:42,784 INFO L93 Difference]: Finished difference Result 206106 states and 315832 transitions. [2020-10-12 20:14:42,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:14:42,785 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-10-12 20:14:42,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:14:42,948 INFO L225 Difference]: With dead ends: 206106 [2020-10-12 20:14:42,948 INFO L226 Difference]: Without dead ends: 133614 [2020-10-12 20:14:42,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:14:43,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133614 states. [2020-10-12 20:14:52,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133614 to 119710. [2020-10-12 20:14:52,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119710 states. [2020-10-12 20:14:52,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119710 states to 119710 states and 182911 transitions. [2020-10-12 20:14:52,603 INFO L78 Accepts]: Start accepts. Automaton has 119710 states and 182911 transitions. Word has length 176 [2020-10-12 20:14:52,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:14:52,603 INFO L479 AbstractCegarLoop]: Abstraction has 119710 states and 182911 transitions. [2020-10-12 20:14:52,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 20:14:52,603 INFO L276 IsEmpty]: Start isEmpty. Operand 119710 states and 182911 transitions. [2020-10-12 20:14:52,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-12 20:14:52,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:14:52,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:14:52,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:14:52,721 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:14:52,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:14:52,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1986921843, now seen corresponding path program 1 times [2020-10-12 20:14:52,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:14:52,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816054122] [2020-10-12 20:14:52,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:14:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:14:52,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:52,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:52,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:52,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:53,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:53,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:54,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:58,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:14:58,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-12 20:14:58,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:14:58,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5550 [2020-10-12 20:14:58,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:14:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:14:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-12 20:14:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 20:14:58,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:14:58,576 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:14:58,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:14:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:14:58,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:58,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:14:58,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:14:58,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:14:58,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:14:58,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:14:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:14:58,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:14:58,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:14:58,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:14:58,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:14:58,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816054122] [2020-10-12 20:14:58,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:14:58,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:14:58,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272079982] [2020-10-12 20:14:58,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:14:58,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:14:58,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:14:58,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:14:58,618 INFO L87 Difference]: Start difference. First operand 119710 states and 182911 transitions. Second operand 4 states. [2020-10-12 20:14:58,882 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187