/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:04:25,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:04:25,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:04:25,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:04:25,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:04:25,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:04:25,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:04:25,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:04:25,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:04:25,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:04:25,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:04:25,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:04:25,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:04:25,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:04:25,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:04:25,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:04:25,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:04:25,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:04:25,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:04:25,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:04:25,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:04:25,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:04:25,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:04:25,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:04:25,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:04:25,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:04:25,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:04:25,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:04:25,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:04:25,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:04:25,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:04:25,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:04:25,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:04:25,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:04:25,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:04:25,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:04:25,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:04:25,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:04:25,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:04:25,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:04:25,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:04:25,824 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 [2020-10-15 04:04:25,867 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:04:25,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:04:25,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:04:25,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:04:25,869 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:04:25,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:04:25,869 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:04:25,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:04:25,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:04:25,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:04:25,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:04:25,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:04:25,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:04:25,871 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:04:25,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:04:25,871 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:04:25,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:04:25,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:04:25,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:04:25,872 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:04:25,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:04:25,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:04:25,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:04:25,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:04:25,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:04:25,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:04:25,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:04:25,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:04:25,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:04:25,874 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:04:26,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:04:26,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:04:26,201 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:04:26,203 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:04:26,204 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:04:26,205 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 04:04:26,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14dbba7d9/f83fcde520444e81ab29f6c93e4e324d/FLAG75217a4d1 [2020-10-15 04:04:26,762 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:04:26,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 04:04:26,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14dbba7d9/f83fcde520444e81ab29f6c93e4e324d/FLAG75217a4d1 [2020-10-15 04:04:27,075 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14dbba7d9/f83fcde520444e81ab29f6c93e4e324d [2020-10-15 04:04:27,083 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:04:27,084 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:04:27,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:04:27,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:04:27,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:04:27,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:04:27" (1/1) ... [2020-10-15 04:04:27,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5895b342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:04:27, skipping insertion in model container [2020-10-15 04:04:27,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:04:27" (1/1) ... [2020-10-15 04:04:27,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:04:27,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:04:27,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:04:27,480 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:04:27,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:04:27,700 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:04:27,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:04:27 WrapperNode [2020-10-15 04:04:27,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:04:27,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:04:27,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:04:27,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:04:27,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:04:27" (1/1) ... [2020-10-15 04:04:27,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:04:27" (1/1) ... [2020-10-15 04:04:27,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:04:27" (1/1) ... [2020-10-15 04:04:27,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:04:27" (1/1) ... [2020-10-15 04:04:27,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:04:27" (1/1) ... [2020-10-15 04:04:27,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:04:27" (1/1) ... [2020-10-15 04:04:27,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:04:27" (1/1) ... [2020-10-15 04:04:27,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:04:27,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:04:27,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:04:27,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:04:27,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:04:27" (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 [2020-10-15 04:04:27,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:04:27,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:04:27,866 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:04:27,866 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:04:27,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:04:27,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:04:27,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 04:04:27,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:04:27,868 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:04:27,868 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:04:27,868 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:04:27,868 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:04:27,868 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:04:27,869 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:04:27,869 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:04:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:04:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:04:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:04:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:04:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:04:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:04:28,634 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:04:28,635 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:04:28,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:04:28 BoogieIcfgContainer [2020-10-15 04:04:28,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:04:28,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:04:28,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:04:28,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:04:28,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:04:27" (1/3) ... [2020-10-15 04:04:28,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8e6f35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:04:28, skipping insertion in model container [2020-10-15 04:04:28,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:04:27" (2/3) ... [2020-10-15 04:04:28,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8e6f35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:04:28, skipping insertion in model container [2020-10-15 04:04:28,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:04:28" (3/3) ... [2020-10-15 04:04:28,649 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 04:04:28,659 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:04:28,667 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:04:28,681 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:04:28,707 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:04:28,708 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:04:28,708 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:04:28,708 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:04:28,709 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:04:28,709 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:04:28,709 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:04:28,709 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:04:28,736 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-10-15 04:04:28,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-15 04:04:28,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:04:28,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:04:28,748 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:04:28,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:04:28,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1725986399, now seen corresponding path program 1 times [2020-10-15 04:04:28,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:04:28,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027352402] [2020-10-15 04:04:28,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:04:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:29,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:29,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:29,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:29,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:31,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:31,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 04:04:31,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:04:31,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2033 [2020-10-15 04:04:31,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:31,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:31,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:04:31,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-15 04:04:31,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 04:04:31,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:04:31,448 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:04:31,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:04:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:31,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:31,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:31,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:04:31,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:04:31,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 04:04:31,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:31,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:31,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:04:31,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:04:31,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:04:31,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:04:31,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:04:31,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027352402] [2020-10-15 04:04:31,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:04:31,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:04:31,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339767717] [2020-10-15 04:04:31,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:04:31,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:04:31,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:04:31,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:04:31,534 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 4 states. [2020-10-15 04:04:31,773 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 04:04:32,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:04:32,552 INFO L93 Difference]: Finished difference Result 336 states and 558 transitions. [2020-10-15 04:04:32,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:04:32,554 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-15 04:04:32,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:04:32,569 INFO L225 Difference]: With dead ends: 336 [2020-10-15 04:04:32,569 INFO L226 Difference]: Without dead ends: 229 [2020-10-15 04:04:32,573 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 [2020-10-15 04:04:32,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-15 04:04:32,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 226. [2020-10-15 04:04:32,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-15 04:04:32,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 349 transitions. [2020-10-15 04:04:32,636 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 349 transitions. Word has length 66 [2020-10-15 04:04:32,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:04:32,637 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 349 transitions. [2020-10-15 04:04:32,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:04:32,637 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 349 transitions. [2020-10-15 04:04:32,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 04:04:32,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:04:32,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:04:32,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:04:32,642 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:04:32,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:04:32,642 INFO L82 PathProgramCache]: Analyzing trace with hash 166652608, now seen corresponding path program 1 times [2020-10-15 04:04:32,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:04:32,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369674453] [2020-10-15 04:04:32,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:04:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:32,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:32,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:32,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:33,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:33,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:36,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:36,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 04:04:36,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:04:36,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3762 [2020-10-15 04:04:36,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:36,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:36,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:04:36,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:04:36,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 04:04:36,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:04:36,733 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:04:36,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:04:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:36,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:36,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:36,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:04:36,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:04:36,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 04:04:36,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:36,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:36,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:04:36,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:04:36,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:04:36,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:04:36,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:04:36,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369674453] [2020-10-15 04:04:36,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:04:36,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:04:36,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461020482] [2020-10-15 04:04:36,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:04:36,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:04:36,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:04:36,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:04:36,784 INFO L87 Difference]: Start difference. First operand 226 states and 349 transitions. Second operand 5 states. [2020-10-15 04:04:38,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:04:38,079 INFO L93 Difference]: Finished difference Result 632 states and 974 transitions. [2020-10-15 04:04:38,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:04:38,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-15 04:04:38,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:04:38,084 INFO L225 Difference]: With dead ends: 632 [2020-10-15 04:04:38,084 INFO L226 Difference]: Without dead ends: 435 [2020-10-15 04:04:38,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:04:38,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-15 04:04:38,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 433. [2020-10-15 04:04:38,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-10-15 04:04:38,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 667 transitions. [2020-10-15 04:04:38,151 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 667 transitions. Word has length 68 [2020-10-15 04:04:38,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:04:38,151 INFO L479 AbstractCegarLoop]: Abstraction has 433 states and 667 transitions. [2020-10-15 04:04:38,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:04:38,152 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 667 transitions. [2020-10-15 04:04:38,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 04:04:38,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:04:38,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:04:38,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:04:38,164 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:04:38,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:04:38,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1232335638, now seen corresponding path program 1 times [2020-10-15 04:04:38,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:04:38,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89360927] [2020-10-15 04:04:38,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:04:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:38,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:38,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:38,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:38,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:38,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:38,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:41,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:41,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 04:04:41,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:04:41,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2967 [2020-10-15 04:04:41,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:41,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:41,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:04:41,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:04:41,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 04:04:41,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:04:41,472 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:04:41,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:04:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:41,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:41,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:41,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:04:41,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:04:41,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:04:41,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:41,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:41,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:04:41,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:04:41,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:04:41,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:04:41,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:04:41,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89360927] [2020-10-15 04:04:41,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:04:41,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:04:41,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235935944] [2020-10-15 04:04:41,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:04:41,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:04:41,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:04:41,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:04:41,512 INFO L87 Difference]: Start difference. First operand 433 states and 667 transitions. Second operand 5 states. [2020-10-15 04:04:42,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:04:42,174 INFO L93 Difference]: Finished difference Result 1257 states and 1936 transitions. [2020-10-15 04:04:42,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:04:42,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-15 04:04:42,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:04:42,180 INFO L225 Difference]: With dead ends: 1257 [2020-10-15 04:04:42,180 INFO L226 Difference]: Without dead ends: 838 [2020-10-15 04:04:42,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:04:42,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2020-10-15 04:04:42,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 836. [2020-10-15 04:04:42,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-10-15 04:04:42,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1279 transitions. [2020-10-15 04:04:42,239 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1279 transitions. Word has length 69 [2020-10-15 04:04:42,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:04:42,240 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1279 transitions. [2020-10-15 04:04:42,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:04:42,240 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1279 transitions. [2020-10-15 04:04:42,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 04:04:42,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:04:42,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:04:42,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:04:42,243 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:04:42,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:04:42,244 INFO L82 PathProgramCache]: Analyzing trace with hash -250993752, now seen corresponding path program 1 times [2020-10-15 04:04:42,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:04:42,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664324769] [2020-10-15 04:04:42,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:04:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:42,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:42,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:42,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:42,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:42,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:43,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:43,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:47,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:47,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 04:04:47,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:04:47,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 04:04:47,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:47,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:47,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:04:47,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:04:47,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 04:04:47,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:04:47,517 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:04:47,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:04:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:47,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:47,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:47,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:04:47,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:04:47,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:04:47,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:47,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:47,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:04:47,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:04:47,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:04:47,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:04:47,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:04:47,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664324769] [2020-10-15 04:04:47,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:04:47,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:04:47,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084321160] [2020-10-15 04:04:47,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:04:47,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:04:47,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:04:47,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:04:47,553 INFO L87 Difference]: Start difference. First operand 836 states and 1279 transitions. Second operand 5 states. [2020-10-15 04:04:47,760 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 04:04:48,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:04:48,641 INFO L93 Difference]: Finished difference Result 1247 states and 1902 transitions. [2020-10-15 04:04:48,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:04:48,642 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-15 04:04:48,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:04:48,647 INFO L225 Difference]: With dead ends: 1247 [2020-10-15 04:04:48,647 INFO L226 Difference]: Without dead ends: 838 [2020-10-15 04:04:48,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:04:48,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2020-10-15 04:04:48,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 836. [2020-10-15 04:04:48,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-10-15 04:04:48,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1270 transitions. [2020-10-15 04:04:48,705 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1270 transitions. Word has length 70 [2020-10-15 04:04:48,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:04:48,705 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1270 transitions. [2020-10-15 04:04:48,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:04:48,705 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1270 transitions. [2020-10-15 04:04:48,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 04:04:48,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:04:48,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:04:48,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:04:48,710 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:04:48,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:04:48,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1984453697, now seen corresponding path program 1 times [2020-10-15 04:04:48,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:04:48,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125669591] [2020-10-15 04:04:48,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:04:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:48,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:48,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:48,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:49,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:49,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:52,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:52,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 04:04:52,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:04:52,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3347 [2020-10-15 04:04:52,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:52,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:52,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:04:52,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 04:04:52,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:04:52,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:04:52,266 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:04:52,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:04:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:52,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:52,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:52,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:04:52,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:04:52,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:04:52,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:52,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:52,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:04:52,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:04:52,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:04:52,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:04:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:04:52,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125669591] [2020-10-15 04:04:52,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:04:52,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:04:52,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230137971] [2020-10-15 04:04:52,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:04:52,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:04:52,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:04:52,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:04:52,308 INFO L87 Difference]: Start difference. First operand 836 states and 1270 transitions. Second operand 4 states. [2020-10-15 04:04:52,580 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 04:04:53,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:04:53,359 INFO L93 Difference]: Finished difference Result 2028 states and 3196 transitions. [2020-10-15 04:04:53,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:04:53,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-15 04:04:53,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:04:53,370 INFO L225 Difference]: With dead ends: 2028 [2020-10-15 04:04:53,370 INFO L226 Difference]: Without dead ends: 1402 [2020-10-15 04:04:53,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:04:53,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2020-10-15 04:04:53,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1392. [2020-10-15 04:04:53,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1392 states. [2020-10-15 04:04:53,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 2160 transitions. [2020-10-15 04:04:53,498 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 2160 transitions. Word has length 70 [2020-10-15 04:04:53,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:04:53,499 INFO L479 AbstractCegarLoop]: Abstraction has 1392 states and 2160 transitions. [2020-10-15 04:04:53,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:04:53,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 2160 transitions. [2020-10-15 04:04:53,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 04:04:53,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:04:53,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:04:53,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:04:53,503 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:04:53,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:04:53,503 INFO L82 PathProgramCache]: Analyzing trace with hash -693462430, now seen corresponding path program 1 times [2020-10-15 04:04:53,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:04:53,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323523888] [2020-10-15 04:04:53,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:04:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:53,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:53,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:53,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:53,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:54,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:54,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:58,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:58,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 04:04:58,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:04:58,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:04:58,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:58,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:58,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:04:58,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:04:58,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 04:04:58,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:04:58,805 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:04:58,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:04:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:58,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:58,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:58,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:04:58,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:04:58,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:04:58,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:58,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:58,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:04:58,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:04:58,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:04:58,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:04:58,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:04:58,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323523888] [2020-10-15 04:04:58,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:04:58,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:04:58,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692253124] [2020-10-15 04:04:58,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:04:58,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:04:58,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:04:58,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:04:58,844 INFO L87 Difference]: Start difference. First operand 1392 states and 2160 transitions. Second operand 5 states. [2020-10-15 04:04:59,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:04:59,790 INFO L93 Difference]: Finished difference Result 3817 states and 5976 transitions. [2020-10-15 04:04:59,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:04:59,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-15 04:04:59,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:04:59,805 INFO L225 Difference]: With dead ends: 3817 [2020-10-15 04:04:59,805 INFO L226 Difference]: Without dead ends: 2635 [2020-10-15 04:04:59,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:04:59,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635 states. [2020-10-15 04:04:59,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635 to 2633. [2020-10-15 04:04:59,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2633 states. [2020-10-15 04:05:00,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 4042 transitions. [2020-10-15 04:05:00,009 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 4042 transitions. Word has length 72 [2020-10-15 04:05:00,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:05:00,010 INFO L479 AbstractCegarLoop]: Abstraction has 2633 states and 4042 transitions. [2020-10-15 04:05:00,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:05:00,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 4042 transitions. [2020-10-15 04:05:00,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 04:05:00,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:05:00,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:05:00,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:05:00,020 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:05:00,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:05:00,020 INFO L82 PathProgramCache]: Analyzing trace with hash 457469818, now seen corresponding path program 1 times [2020-10-15 04:05:00,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:05:00,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072947686] [2020-10-15 04:05:00,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:05:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:00,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:00,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:00,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:00,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:00,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:01,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:05,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:05,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 04:05:05,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:05:05,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 04:05:05,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:05,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:05,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:05:05,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:05:05,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 04:05:05,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:05,291 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:05:05,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:05:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:05,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:05,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:05,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:05:05,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:05:05,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:05:05,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:05,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:05,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:05:05,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:05:05,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:05:05,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:05:05,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:05:05,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072947686] [2020-10-15 04:05:05,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:05:05,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:05:05,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878943844] [2020-10-15 04:05:05,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:05:05,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:05:05,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:05:05,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:05:05,330 INFO L87 Difference]: Start difference. First operand 2633 states and 4042 transitions. Second operand 5 states. [2020-10-15 04:05:06,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:05:06,580 INFO L93 Difference]: Finished difference Result 7308 states and 11331 transitions. [2020-10-15 04:05:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:05:06,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-15 04:05:06,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:05:06,609 INFO L225 Difference]: With dead ends: 7308 [2020-10-15 04:05:06,609 INFO L226 Difference]: Without dead ends: 5042 [2020-10-15 04:05:06,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:05:06,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5042 states. [2020-10-15 04:05:07,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5042 to 5040. [2020-10-15 04:05:07,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5040 states. [2020-10-15 04:05:07,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5040 states to 5040 states and 7673 transitions. [2020-10-15 04:05:07,078 INFO L78 Accepts]: Start accepts. Automaton has 5040 states and 7673 transitions. Word has length 73 [2020-10-15 04:05:07,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:05:07,078 INFO L479 AbstractCegarLoop]: Abstraction has 5040 states and 7673 transitions. [2020-10-15 04:05:07,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:05:07,078 INFO L276 IsEmpty]: Start isEmpty. Operand 5040 states and 7673 transitions. [2020-10-15 04:05:07,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 04:05:07,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:05:07,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:05:07,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:05:07,089 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:05:07,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:05:07,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1189010898, now seen corresponding path program 1 times [2020-10-15 04:05:07,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:05:07,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693958495] [2020-10-15 04:05:07,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:05:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:07,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:07,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:07,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:07,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:07,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:08,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:08,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:08,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:12,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:12,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 04:05:12,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:05:12,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:05:12,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:12,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:12,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:05:12,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:05:12,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 04:05:12,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:05:12,313 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:05:12,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:05:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:12,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:12,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:12,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:05:12,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:05:12,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:05:12,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:12,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:12,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:05:12,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:05:12,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:05:12,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:12,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:05:12,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693958495] [2020-10-15 04:05:12,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:05:12,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:05:12,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670731891] [2020-10-15 04:05:12,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:05:12,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:05:12,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:05:12,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:05:12,349 INFO L87 Difference]: Start difference. First operand 5040 states and 7673 transitions. Second operand 5 states. [2020-10-15 04:05:12,538 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 04:05:13,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:05:13,905 INFO L93 Difference]: Finished difference Result 9519 states and 14378 transitions. [2020-10-15 04:05:13,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:05:13,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-15 04:05:13,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:05:13,938 INFO L225 Difference]: With dead ends: 9519 [2020-10-15 04:05:13,938 INFO L226 Difference]: Without dead ends: 6676 [2020-10-15 04:05:13,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:05:13,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6676 states. [2020-10-15 04:05:14,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6676 to 6674. [2020-10-15 04:05:14,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6674 states. [2020-10-15 04:05:14,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6674 states to 6674 states and 9964 transitions. [2020-10-15 04:05:14,400 INFO L78 Accepts]: Start accepts. Automaton has 6674 states and 9964 transitions. Word has length 74 [2020-10-15 04:05:14,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:05:14,400 INFO L479 AbstractCegarLoop]: Abstraction has 6674 states and 9964 transitions. [2020-10-15 04:05:14,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:05:14,400 INFO L276 IsEmpty]: Start isEmpty. Operand 6674 states and 9964 transitions. [2020-10-15 04:05:14,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 04:05:14,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:05:14,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:05:14,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:05:14,410 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:05:14,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:05:14,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1329423587, now seen corresponding path program 1 times [2020-10-15 04:05:14,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:05:14,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994029663] [2020-10-15 04:05:14,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:05:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:14,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:14,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:14,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:14,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:14,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:17,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:19,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:19,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 04:05:19,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:05:19,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 04:05:19,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:19,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:19,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:05:19,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-15 04:05:19,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:05:19,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:19,621 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:05:19,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:05:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:19,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:19,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:19,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:05:19,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:05:19,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:05:19,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:19,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:19,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:05:19,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:05:19,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:05:19,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:19,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:05:19,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994029663] [2020-10-15 04:05:19,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:05:19,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:05:19,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671825845] [2020-10-15 04:05:19,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:05:19,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:05:19,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:05:19,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:05:19,650 INFO L87 Difference]: Start difference. First operand 6674 states and 9964 transitions. Second operand 4 states. [2020-10-15 04:05:19,846 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 04:05:20,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:05:20,995 INFO L93 Difference]: Finished difference Result 15898 states and 24398 transitions. [2020-10-15 04:05:20,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:05:20,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-10-15 04:05:20,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:05:21,044 INFO L225 Difference]: With dead ends: 15898 [2020-10-15 04:05:21,044 INFO L226 Difference]: Without dead ends: 10580 [2020-10-15 04:05:21,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:05:21,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10580 states. [2020-10-15 04:05:21,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10580 to 10514. [2020-10-15 04:05:21,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10514 states. [2020-10-15 04:05:21,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10514 states to 10514 states and 15884 transitions. [2020-10-15 04:05:21,979 INFO L78 Accepts]: Start accepts. Automaton has 10514 states and 15884 transitions. Word has length 74 [2020-10-15 04:05:21,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:05:21,979 INFO L479 AbstractCegarLoop]: Abstraction has 10514 states and 15884 transitions. [2020-10-15 04:05:21,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:05:21,980 INFO L276 IsEmpty]: Start isEmpty. Operand 10514 states and 15884 transitions. [2020-10-15 04:05:21,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 04:05:21,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:05:21,990 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] [2020-10-15 04:05:21,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:05:21,991 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:05:21,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:05:21,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1133817988, now seen corresponding path program 1 times [2020-10-15 04:05:21,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:05:21,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601305132] [2020-10-15 04:05:21,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:05:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:22,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:22,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:22,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:22,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:22,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:22,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:25,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:27,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:27,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 04:05:27,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:05:27,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 04:05:27,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:27,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:27,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:05:27,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:05:27,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 04:05:27,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:27,241 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:05:27,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:05:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:27,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:27,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:27,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:05:27,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:05:27,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:05:27,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:27,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:27,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:05:27,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:05:27,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:05:27,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:27,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:05:27,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601305132] [2020-10-15 04:05:27,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:05:27,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:05:27,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295882632] [2020-10-15 04:05:27,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:05:27,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:05:27,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:05:27,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:05:27,271 INFO L87 Difference]: Start difference. First operand 10514 states and 15884 transitions. Second operand 5 states. [2020-10-15 04:05:29,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:05:29,211 INFO L93 Difference]: Finished difference Result 30185 states and 45622 transitions. [2020-10-15 04:05:29,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:05:29,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2020-10-15 04:05:29,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:05:29,261 INFO L225 Difference]: With dead ends: 30185 [2020-10-15 04:05:29,261 INFO L226 Difference]: Without dead ends: 20083 [2020-10-15 04:05:29,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:05:29,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20083 states. [2020-10-15 04:05:30,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20083 to 20081. [2020-10-15 04:05:30,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20081 states. [2020-10-15 04:05:30,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20081 states to 20081 states and 29982 transitions. [2020-10-15 04:05:30,760 INFO L78 Accepts]: Start accepts. Automaton has 20081 states and 29982 transitions. Word has length 76 [2020-10-15 04:05:30,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:05:30,760 INFO L479 AbstractCegarLoop]: Abstraction has 20081 states and 29982 transitions. [2020-10-15 04:05:30,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:05:30,761 INFO L276 IsEmpty]: Start isEmpty. Operand 20081 states and 29982 transitions. [2020-10-15 04:05:30,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 04:05:30,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:05:30,780 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] [2020-10-15 04:05:30,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:05:30,781 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:05:30,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:05:30,781 INFO L82 PathProgramCache]: Analyzing trace with hash 964346241, now seen corresponding path program 1 times [2020-10-15 04:05:30,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:05:30,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944668441] [2020-10-15 04:05:30,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:05:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:30,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:30,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:30,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:30,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:30,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:30,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:35,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:35,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 04:05:35,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:05:35,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 04:05:35,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:35,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:35,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:05:35,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:05:35,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 04:05:35,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:36,025 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:05:36,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:05:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:36,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:36,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:36,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:05:36,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:05:36,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:05:36,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:36,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:36,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:05:36,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:05:36,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:05:36,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:36,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:05:36,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944668441] [2020-10-15 04:05:36,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:05:36,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:05:36,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120306101] [2020-10-15 04:05:36,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:05:36,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:05:36,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:05:36,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:05:36,053 INFO L87 Difference]: Start difference. First operand 20081 states and 29982 transitions. Second operand 5 states. [2020-10-15 04:05:39,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:05:39,620 INFO L93 Difference]: Finished difference Result 55783 states and 83808 transitions. [2020-10-15 04:05:39,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:05:39,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-10-15 04:05:39,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:05:39,719 INFO L225 Difference]: With dead ends: 55783 [2020-10-15 04:05:39,719 INFO L226 Difference]: Without dead ends: 38261 [2020-10-15 04:05:39,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:05:39,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38261 states. [2020-10-15 04:05:42,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38261 to 38259. [2020-10-15 04:05:42,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38259 states. [2020-10-15 04:05:42,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38259 states to 38259 states and 56390 transitions. [2020-10-15 04:05:42,767 INFO L78 Accepts]: Start accepts. Automaton has 38259 states and 56390 transitions. Word has length 77 [2020-10-15 04:05:42,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:05:42,767 INFO L479 AbstractCegarLoop]: Abstraction has 38259 states and 56390 transitions. [2020-10-15 04:05:42,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:05:42,767 INFO L276 IsEmpty]: Start isEmpty. Operand 38259 states and 56390 transitions. [2020-10-15 04:05:42,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 04:05:42,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:05:42,796 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] [2020-10-15 04:05:42,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:05:42,796 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:05:42,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:05:42,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1293595050, now seen corresponding path program 1 times [2020-10-15 04:05:42,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:05:42,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841477595] [2020-10-15 04:05:42,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:05:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:42,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:42,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:42,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:42,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:43,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:43,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:43,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:47,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:47,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 04:05:47,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:05:47,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 04:05:47,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:47,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:47,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:05:47,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 04:05:47,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 04:05:47,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:48,040 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:05:48,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:05:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:48,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:48,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:48,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:05:48,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:05:48,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:05:48,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:48,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:48,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:05:48,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:05:48,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:05:48,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:48,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:05:48,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841477595] [2020-10-15 04:05:48,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:05:48,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:05:48,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310320125] [2020-10-15 04:05:48,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:05:48,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:05:48,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:05:48,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:05:48,081 INFO L87 Difference]: Start difference. First operand 38259 states and 56390 transitions. Second operand 5 states. [2020-10-15 04:05:50,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:05:50,521 INFO L93 Difference]: Finished difference Result 43258 states and 63693 transitions. [2020-10-15 04:05:50,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:05:50,522 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-15 04:05:50,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:05:50,567 INFO L225 Difference]: With dead ends: 43258 [2020-10-15 04:05:50,567 INFO L226 Difference]: Without dead ends: 24646 [2020-10-15 04:05:50,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:05:50,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24646 states. [2020-10-15 04:05:52,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24646 to 24645. [2020-10-15 04:05:52,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24645 states. [2020-10-15 04:05:52,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24645 states to 24645 states and 36346 transitions. [2020-10-15 04:05:52,677 INFO L78 Accepts]: Start accepts. Automaton has 24645 states and 36346 transitions. Word has length 78 [2020-10-15 04:05:52,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:05:52,677 INFO L479 AbstractCegarLoop]: Abstraction has 24645 states and 36346 transitions. [2020-10-15 04:05:52,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:05:52,677 INFO L276 IsEmpty]: Start isEmpty. Operand 24645 states and 36346 transitions. [2020-10-15 04:05:52,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 04:05:52,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:05:52,690 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] [2020-10-15 04:05:52,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:05:52,690 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:05:52,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:05:52,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1175627992, now seen corresponding path program 1 times [2020-10-15 04:05:52,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:05:52,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372573414] [2020-10-15 04:05:52,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:05:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:52,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:52,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:52,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:52,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:52,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:52,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:54,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:54,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:56,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:57,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:57,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 04:05:57,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:05:57,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 04:05:57,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:57,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:05:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:05:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 04:05:57,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:57,911 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:05:57,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:05:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:57,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:57,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:57,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:05:57,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:05:57,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:05:57,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:57,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:05:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:05:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:05:57,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:05:57,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:05:57,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372573414] [2020-10-15 04:05:57,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:05:57,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:05:57,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414400814] [2020-10-15 04:05:57,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:05:57,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:05:57,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:05:57,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:05:57,937 INFO L87 Difference]: Start difference. First operand 24645 states and 36346 transitions. Second operand 5 states. [2020-10-15 04:05:58,137 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 04:06:01,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:06:01,145 INFO L93 Difference]: Finished difference Result 39582 states and 58037 transitions. [2020-10-15 04:06:01,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:06:01,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-15 04:06:01,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:06:01,177 INFO L225 Difference]: With dead ends: 39582 [2020-10-15 04:06:01,177 INFO L226 Difference]: Without dead ends: 26422 [2020-10-15 04:06:01,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:06:01,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26422 states. [2020-10-15 04:06:03,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26422 to 26420. [2020-10-15 04:06:03,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26420 states. [2020-10-15 04:06:03,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26420 states to 26420 states and 38437 transitions. [2020-10-15 04:06:03,845 INFO L78 Accepts]: Start accepts. Automaton has 26420 states and 38437 transitions. Word has length 78 [2020-10-15 04:06:03,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:06:03,845 INFO L479 AbstractCegarLoop]: Abstraction has 26420 states and 38437 transitions. [2020-10-15 04:06:03,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:06:03,845 INFO L276 IsEmpty]: Start isEmpty. Operand 26420 states and 38437 transitions. [2020-10-15 04:06:03,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 04:06:03,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:06:03,858 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] [2020-10-15 04:06:03,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:06:03,858 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:06:03,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:06:03,859 INFO L82 PathProgramCache]: Analyzing trace with hash 728407261, now seen corresponding path program 1 times [2020-10-15 04:06:03,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:06:03,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737616298] [2020-10-15 04:06:03,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:06:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:03,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:03,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:03,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:03,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:04,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:04,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:04,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:07,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:07,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 04:06:07,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:06:07,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3241 [2020-10-15 04:06:07,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:07,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:07,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:06:07,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-15 04:06:07,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 04:06:07,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:06:07,309 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:06:07,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:06:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:07,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:07,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:07,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:06:07,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:06:07,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:06:07,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:07,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:07,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:06:07,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:06:07,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:06:07,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:06:07,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:06:07,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737616298] [2020-10-15 04:06:07,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:06:07,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 04:06:07,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600655063] [2020-10-15 04:06:07,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 04:06:07,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:06:07,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 04:06:07,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:06:07,332 INFO L87 Difference]: Start difference. First operand 26420 states and 38437 transitions. Second operand 6 states. [2020-10-15 04:06:07,536 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 04:06:16,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:06:16,032 INFO L93 Difference]: Finished difference Result 127186 states and 190991 transitions. [2020-10-15 04:06:16,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 04:06:16,038 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-15 04:06:16,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:06:16,168 INFO L225 Difference]: With dead ends: 127186 [2020-10-15 04:06:16,168 INFO L226 Difference]: Without dead ends: 104462 [2020-10-15 04:06:16,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 04:06:16,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104462 states. [2020-10-15 04:06:21,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104462 to 48636. [2020-10-15 04:06:21,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48636 states. [2020-10-15 04:06:21,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48636 states to 48636 states and 71464 transitions. [2020-10-15 04:06:21,708 INFO L78 Accepts]: Start accepts. Automaton has 48636 states and 71464 transitions. Word has length 78 [2020-10-15 04:06:21,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:06:21,708 INFO L479 AbstractCegarLoop]: Abstraction has 48636 states and 71464 transitions. [2020-10-15 04:06:21,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 04:06:21,709 INFO L276 IsEmpty]: Start isEmpty. Operand 48636 states and 71464 transitions. [2020-10-15 04:06:21,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 04:06:21,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:06:21,728 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] [2020-10-15 04:06:21,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:06:21,729 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:06:21,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:06:21,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1044178174, now seen corresponding path program 1 times [2020-10-15 04:06:21,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:06:21,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869776711] [2020-10-15 04:06:21,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:06:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:21,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:21,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:21,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:21,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:21,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:22,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:23,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:23,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:26,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:26,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 04:06:26,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:06:26,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:06:26,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:26,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:26,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:06:26,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-15 04:06:26,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 04:06:26,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:06:26,935 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:06:26,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:06:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:26,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:26,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:26,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:06:26,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:06:26,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:06:26,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:26,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:26,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:06:26,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:06:26,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:06:26,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:06:26,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:06:26,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869776711] [2020-10-15 04:06:26,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:06:26,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:06:26,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588462672] [2020-10-15 04:06:26,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:06:26,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:06:26,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:06:26,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:06:26,958 INFO L87 Difference]: Start difference. First operand 48636 states and 71464 transitions. Second operand 5 states. [2020-10-15 04:06:27,156 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 04:06:39,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:06:39,468 INFO L93 Difference]: Finished difference Result 169644 states and 253025 transitions. [2020-10-15 04:06:39,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:06:39,469 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-15 04:06:39,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:06:39,627 INFO L225 Difference]: With dead ends: 169644 [2020-10-15 04:06:39,628 INFO L226 Difference]: Without dead ends: 125014 [2020-10-15 04:06:39,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:06:39,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125014 states. [2020-10-15 04:06:47,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125014 to 86658. [2020-10-15 04:06:47,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86658 states. [2020-10-15 04:06:47,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86658 states to 86658 states and 127672 transitions. [2020-10-15 04:06:47,242 INFO L78 Accepts]: Start accepts. Automaton has 86658 states and 127672 transitions. Word has length 79 [2020-10-15 04:06:47,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:06:47,243 INFO L479 AbstractCegarLoop]: Abstraction has 86658 states and 127672 transitions. [2020-10-15 04:06:47,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:06:47,243 INFO L276 IsEmpty]: Start isEmpty. Operand 86658 states and 127672 transitions. [2020-10-15 04:06:47,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 04:06:47,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:06:47,262 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] [2020-10-15 04:06:47,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:06:47,262 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:06:47,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:06:47,263 INFO L82 PathProgramCache]: Analyzing trace with hash -2047267388, now seen corresponding path program 1 times [2020-10-15 04:06:47,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:06:47,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419679118] [2020-10-15 04:06:47,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:06:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:47,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:47,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:47,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:47,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:47,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:48,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:48,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:48,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:52,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:52,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 04:06:52,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:06:52,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5274 [2020-10-15 04:06:52,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:52,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:52,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:06:52,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-15 04:06:52,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 04:06:52,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:06:52,740 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:06:52,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:06:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:52,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:52,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:52,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:06:52,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:06:52,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:06:52,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:52,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:52,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:06:52,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:06:52,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:06:52,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:06:52,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:06:52,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419679118] [2020-10-15 04:06:52,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:06:52,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:06:52,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024965698] [2020-10-15 04:06:52,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:06:52,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:06:52,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:06:52,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:06:52,768 INFO L87 Difference]: Start difference. First operand 86658 states and 127672 transitions. Second operand 5 states. [2020-10-15 04:06:52,964 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 04:07:07,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:07:07,996 INFO L93 Difference]: Finished difference Result 244844 states and 364287 transitions. [2020-10-15 04:07:07,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:07:07,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-15 04:07:07,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:07:08,230 INFO L225 Difference]: With dead ends: 244844 [2020-10-15 04:07:08,231 INFO L226 Difference]: Without dead ends: 162502 [2020-10-15 04:07:08,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:07:08,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162502 states. [2020-10-15 04:07:22,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162502 to 123979. [2020-10-15 04:07:22,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123979 states. [2020-10-15 04:07:22,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123979 states to 123979 states and 182114 transitions. [2020-10-15 04:07:22,306 INFO L78 Accepts]: Start accepts. Automaton has 123979 states and 182114 transitions. Word has length 80 [2020-10-15 04:07:22,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:07:22,306 INFO L479 AbstractCegarLoop]: Abstraction has 123979 states and 182114 transitions. [2020-10-15 04:07:22,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:07:22,306 INFO L276 IsEmpty]: Start isEmpty. Operand 123979 states and 182114 transitions. [2020-10-15 04:07:22,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 04:07:22,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:07:22,331 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] [2020-10-15 04:07:22,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 04:07:22,331 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:07:22,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:07:22,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1501326989, now seen corresponding path program 1 times [2020-10-15 04:07:22,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:07:22,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986899070] [2020-10-15 04:07:22,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:07:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:22,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:22,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:22,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:22,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:22,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:22,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:27,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:27,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 04:07:27,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:07:27,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 04:07:27,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:27,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:27,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:07:27,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 04:07:27,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:07:27,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:27,568 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 04:07:27,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:07:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:27,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:27,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:27,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:07:27,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:07:27,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:07:27,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:27,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:27,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:07:27,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:07:27,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:07:27,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:27,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:07:27,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986899070] [2020-10-15 04:07:27,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:07:27,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:07:27,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515662977] [2020-10-15 04:07:27,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:07:27,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:07:27,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:07:27,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:07:27,599 INFO L87 Difference]: Start difference. First operand 123979 states and 182114 transitions. Second operand 5 states. [2020-10-15 04:07:27,966 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 04:07:54,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:07:54,635 INFO L93 Difference]: Finished difference Result 351563 states and 517086 transitions. [2020-10-15 04:07:54,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:07:54,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-15 04:07:54,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:07:54,972 INFO L225 Difference]: With dead ends: 351563 [2020-10-15 04:07:54,972 INFO L226 Difference]: Without dead ends: 235993 [2020-10-15 04:07:55,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:07:55,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235993 states. [2020-10-15 04:08:15,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235993 to 177743. [2020-10-15 04:08:15,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177743 states. [2020-10-15 04:08:16,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177743 states to 177743 states and 258390 transitions. [2020-10-15 04:08:16,088 INFO L78 Accepts]: Start accepts. Automaton has 177743 states and 258390 transitions. Word has length 80 [2020-10-15 04:08:16,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:08:16,089 INFO L479 AbstractCegarLoop]: Abstraction has 177743 states and 258390 transitions. [2020-10-15 04:08:16,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:08:16,089 INFO L276 IsEmpty]: Start isEmpty. Operand 177743 states and 258390 transitions. [2020-10-15 04:08:16,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-15 04:08:16,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:08:16,109 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] [2020-10-15 04:08:16,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 04:08:16,109 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:08:16,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:08:16,109 INFO L82 PathProgramCache]: Analyzing trace with hash 314906740, now seen corresponding path program 1 times [2020-10-15 04:08:16,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:08:16,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130996462] [2020-10-15 04:08:16,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:08:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:16,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:16,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:16,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:16,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:16,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:17,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking...