/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:01:01,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:01:01,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:01:01,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:01:01,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:01:01,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:01:01,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:01:01,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:01:01,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:01:01,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:01:01,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:01:01,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:01:01,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:01:01,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:01:01,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:01:01,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:01:01,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:01:01,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:01:01,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:01:01,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:01:01,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:01:01,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:01:01,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:01:01,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:01:01,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:01:01,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:01:01,714 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:01:01,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:01:01,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:01:01,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:01:01,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:01:01,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:01:01,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:01:01,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:01:01,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:01:01,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:01:01,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:01:01,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:01:01,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:01:01,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:01:01,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:01:01,739 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 [2020-10-13 14:01:01,774 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:01:01,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:01:01,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:01:01,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:01:01,777 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:01:01,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:01:01,777 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:01:01,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:01:01,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:01:01,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:01:01,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:01:01,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:01:01,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:01:01,780 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:01:01,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:01:01,780 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:01:01,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:01:01,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:01:01,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:01:01,781 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:01:01,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:01:01,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:01:01,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:01:01,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:01:01,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:01:01,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:01:01,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:01:01,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:01:01,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:01:01,783 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:01:02,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:01:02,089 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:01:02,092 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:01:02,094 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:01:02,094 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:01:02,095 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-13 14:01:02,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5c6e1b5e/b085c640d45a498f825cd6ea24e189c6/FLAG909087bcb [2020-10-13 14:01:02,782 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:01:02,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-13 14:01:02,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5c6e1b5e/b085c640d45a498f825cd6ea24e189c6/FLAG909087bcb [2020-10-13 14:01:03,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5c6e1b5e/b085c640d45a498f825cd6ea24e189c6 [2020-10-13 14:01:03,040 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:01:03,042 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:01:03,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:01:03,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:01:03,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:01:03,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:01:03" (1/1) ... [2020-10-13 14:01:03,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bef9f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:03, skipping insertion in model container [2020-10-13 14:01:03,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:01:03" (1/1) ... [2020-10-13 14:01:03,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:01:03,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:01:04,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:01:04,055 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:01:04,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:01:04,608 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:01:04,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:04 WrapperNode [2020-10-13 14:01:04,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:01:04,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:01:04,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:01:04,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:01:04,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:04" (1/1) ... [2020-10-13 14:01:04,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:04" (1/1) ... [2020-10-13 14:01:04,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:04" (1/1) ... [2020-10-13 14:01:04,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:04" (1/1) ... [2020-10-13 14:01:04,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:04" (1/1) ... [2020-10-13 14:01:04,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:04" (1/1) ... [2020-10-13 14:01:04,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:04" (1/1) ... [2020-10-13 14:01:04,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:01:04,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:01:04,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:01:04,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:01:04,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:04" (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 [2020-10-13 14:01:04,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:01:04,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:01:04,867 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:01:04,867 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:01:04,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:01:04,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:01:04,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:01:04,869 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:01:04,869 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:01:04,869 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:01:04,869 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:01:04,870 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:01:04,870 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:01:04,870 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:01:04,870 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:01:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:01:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:01:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:01:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:01:04,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:01:04,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:01:07,330 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:01:07,331 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:01:07,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:01:07 BoogieIcfgContainer [2020-10-13 14:01:07,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:01:07,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:01:07,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:01:07,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:01:07,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:01:03" (1/3) ... [2020-10-13 14:01:07,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d013e9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:01:07, skipping insertion in model container [2020-10-13 14:01:07,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:04" (2/3) ... [2020-10-13 14:01:07,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d013e9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:01:07, skipping insertion in model container [2020-10-13 14:01:07,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:01:07" (3/3) ... [2020-10-13 14:01:07,348 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-13 14:01:07,359 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:01:07,367 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 14:01:07,382 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 14:01:07,411 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:01:07,411 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:01:07,412 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:01:07,412 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:01:07,412 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:01:07,412 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:01:07,412 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:01:07,412 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:01:07,443 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states. [2020-10-13 14:01:07,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-13 14:01:07,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:01:07,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:01:07,470 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:01:07,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:01:07,476 INFO L82 PathProgramCache]: Analyzing trace with hash 51924195, now seen corresponding path program 1 times [2020-10-13 14:01:07,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:01:07,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983843205] [2020-10-13 14:01:07,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:01:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:09,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:09,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:10,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:10,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:11,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:11,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:11,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:12,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:12,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:12,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:12,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:12,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:12,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:13,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:13,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 14:01:13,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:01:13,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 14:01:13,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:13,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:01:13,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:01:13,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 14:01:13,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:01:14,561 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 14:01:14,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:01:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:14,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:14,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:14,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:01:14,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:01:14,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 14:01:14,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:14,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:01:14,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:01:14,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:01:14,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:01:14,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:01:14,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983843205] [2020-10-13 14:01:14,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:01:14,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:01:14,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437356448] [2020-10-13 14:01:14,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:01:14,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:01:14,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:01:14,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:01:14,881 INFO L87 Difference]: Start difference. First operand 708 states. Second operand 5 states. [2020-10-13 14:01:23,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:01:23,651 INFO L93 Difference]: Finished difference Result 2044 states and 3651 transitions. [2020-10-13 14:01:23,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:01:23,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 304 [2020-10-13 14:01:23,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:01:23,687 INFO L225 Difference]: With dead ends: 2044 [2020-10-13 14:01:23,687 INFO L226 Difference]: Without dead ends: 1379 [2020-10-13 14:01:23,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:01:23,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2020-10-13 14:01:23,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1377. [2020-10-13 14:01:23,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1377 states. [2020-10-13 14:01:23,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 2130 transitions. [2020-10-13 14:01:23,861 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 2130 transitions. Word has length 304 [2020-10-13 14:01:23,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:01:23,862 INFO L479 AbstractCegarLoop]: Abstraction has 1377 states and 2130 transitions. [2020-10-13 14:01:23,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:01:23,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 2130 transitions. [2020-10-13 14:01:23,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-13 14:01:23,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:01:23,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:01:23,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:01:23,873 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:01:23,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:01:23,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1682441478, now seen corresponding path program 1 times [2020-10-13 14:01:23,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:01:23,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824101576] [2020-10-13 14:01:23,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:01:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:24,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:24,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:24,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:24,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:25,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:25,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:25,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:25,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:25,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:25,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:26,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:26,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:27,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:27,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:27,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:29,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:29,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-13 14:01:29,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:01:29,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-13 14:01:29,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:29,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:01:29,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:01:29,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 14:01:29,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 14:01:29,813 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 14:01:29,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:01:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:29,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:29,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:29,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:01:29,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:01:29,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 14:01:29,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:29,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:01:29,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:01:29,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:01:29,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:01:30,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:01:30,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824101576] [2020-10-13 14:01:30,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:01:30,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:01:30,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473296124] [2020-10-13 14:01:30,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:01:30,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:01:30,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:01:30,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:01:30,072 INFO L87 Difference]: Start difference. First operand 1377 states and 2130 transitions. Second operand 5 states. [2020-10-13 14:01:38,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:01:38,236 INFO L93 Difference]: Finished difference Result 4032 states and 6225 transitions. [2020-10-13 14:01:38,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:01:38,237 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 306 [2020-10-13 14:01:38,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:01:38,253 INFO L225 Difference]: With dead ends: 4032 [2020-10-13 14:01:38,253 INFO L226 Difference]: Without dead ends: 2708 [2020-10-13 14:01:38,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:01:38,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2020-10-13 14:01:38,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2706. [2020-10-13 14:01:38,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2706 states. [2020-10-13 14:01:38,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 4164 transitions. [2020-10-13 14:01:38,429 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 4164 transitions. Word has length 306 [2020-10-13 14:01:38,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:01:38,430 INFO L479 AbstractCegarLoop]: Abstraction has 2706 states and 4164 transitions. [2020-10-13 14:01:38,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:01:38,430 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 4164 transitions. [2020-10-13 14:01:38,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-13 14:01:38,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:01:38,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:01:38,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:01:38,442 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:01:38,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:01:38,443 INFO L82 PathProgramCache]: Analyzing trace with hash 247873648, now seen corresponding path program 1 times [2020-10-13 14:01:38,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:01:38,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026801881] [2020-10-13 14:01:38,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:01:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:38,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:38,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:38,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:39,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:39,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:39,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:39,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:40,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:40,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:40,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:40,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:41,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:41,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:41,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:43,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:43,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-13 14:01:43,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:01:43,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-13 14:01:43,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:43,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:01:43,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 14:01:43,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:01:43,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:01:44,213 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 14:01:44,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:01:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:44,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:44,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:44,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:01:44,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:01:44,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 14:01:44,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:44,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:01:44,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:01:44,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:01:44,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:01:44,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:01:44,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026801881] [2020-10-13 14:01:44,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:01:44,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:01:44,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844407937] [2020-10-13 14:01:44,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:01:44,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:01:44,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:01:44,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:01:44,383 INFO L87 Difference]: Start difference. First operand 2706 states and 4164 transitions. Second operand 4 states. [2020-10-13 14:01:51,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:01:51,921 INFO L93 Difference]: Finished difference Result 8058 states and 12388 transitions. [2020-10-13 14:01:51,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:01:51,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 308 [2020-10-13 14:01:51,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:01:51,950 INFO L225 Difference]: With dead ends: 8058 [2020-10-13 14:01:51,950 INFO L226 Difference]: Without dead ends: 5380 [2020-10-13 14:01:51,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:01:51,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5380 states. [2020-10-13 14:01:52,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5380 to 2726. [2020-10-13 14:01:52,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2726 states. [2020-10-13 14:01:52,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2726 states to 2726 states and 4190 transitions. [2020-10-13 14:01:52,204 INFO L78 Accepts]: Start accepts. Automaton has 2726 states and 4190 transitions. Word has length 308 [2020-10-13 14:01:52,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:01:52,204 INFO L479 AbstractCegarLoop]: Abstraction has 2726 states and 4190 transitions. [2020-10-13 14:01:52,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:01:52,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2726 states and 4190 transitions. [2020-10-13 14:01:52,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-13 14:01:52,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:01:52,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:01:52,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:01:52,216 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:01:52,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:01:52,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1733087428, now seen corresponding path program 1 times [2020-10-13 14:01:52,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:01:52,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537840760] [2020-10-13 14:01:52,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:01:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:52,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:52,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:52,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:52,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:52,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:53,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:53,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:53,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:53,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:53,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:53,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:53,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:55,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:56,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:57,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:57,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-13 14:01:57,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:01:57,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-13 14:01:57,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:57,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:01:57,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:01:57,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 14:01:57,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:01:58,028 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 14:01:58,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:01:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:58,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:58,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:58,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:01:58,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:01:58,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:01:58,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:58,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:01:58,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:01:58,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:01:58,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:01:58,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:01:58,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537840760] [2020-10-13 14:01:58,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:01:58,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:01:58,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839037803] [2020-10-13 14:01:58,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:01:58,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:01:58,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:01:58,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:01:58,216 INFO L87 Difference]: Start difference. First operand 2726 states and 4190 transitions. Second operand 5 states. [2020-10-13 14:02:05,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:02:05,679 INFO L93 Difference]: Finished difference Result 7940 states and 12174 transitions. [2020-10-13 14:02:05,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:02:05,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-10-13 14:02:05,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:02:05,707 INFO L225 Difference]: With dead ends: 7940 [2020-10-13 14:02:05,707 INFO L226 Difference]: Without dead ends: 5350 [2020-10-13 14:02:05,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:02:05,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5350 states. [2020-10-13 14:02:06,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5350 to 5348. [2020-10-13 14:02:06,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5348 states. [2020-10-13 14:02:06,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5348 states to 5348 states and 8170 transitions. [2020-10-13 14:02:06,139 INFO L78 Accepts]: Start accepts. Automaton has 5348 states and 8170 transitions. Word has length 310 [2020-10-13 14:02:06,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:02:06,141 INFO L479 AbstractCegarLoop]: Abstraction has 5348 states and 8170 transitions. [2020-10-13 14:02:06,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:02:06,141 INFO L276 IsEmpty]: Start isEmpty. Operand 5348 states and 8170 transitions. [2020-10-13 14:02:06,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-13 14:02:06,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:06,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:02:06,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:02:06,157 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:06,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:06,157 INFO L82 PathProgramCache]: Analyzing trace with hash 156430930, now seen corresponding path program 1 times [2020-10-13 14:02:06,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:06,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341938211] [2020-10-13 14:02:06,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:06,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:06,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:06,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:07,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:07,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:07,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:07,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:07,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:07,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:07,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:08,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:08,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:08,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:11,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:11,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-13 14:02:11,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:02:11,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 14:02:11,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:11,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:02:11,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 14:02:11,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 14:02:11,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:12,067 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 14:02:12,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:02:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:12,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:12,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:12,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:02:12,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:02:12,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:02:12,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:12,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:02:12,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:02:12,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:02:12,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 14:02:12,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:02:12,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341938211] [2020-10-13 14:02:12,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:02:12,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:02:12,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931556860] [2020-10-13 14:02:12,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:02:12,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:02:12,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:02:12,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:02:12,204 INFO L87 Difference]: Start difference. First operand 5348 states and 8170 transitions. Second operand 5 states. [2020-10-13 14:02:18,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:02:18,177 INFO L93 Difference]: Finished difference Result 14713 states and 22315 transitions. [2020-10-13 14:02:18,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:02:18,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-10-13 14:02:18,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:02:18,221 INFO L225 Difference]: With dead ends: 14713 [2020-10-13 14:02:18,221 INFO L226 Difference]: Without dead ends: 9943 [2020-10-13 14:02:18,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:02:18,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9943 states. [2020-10-13 14:02:18,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9943 to 5808. [2020-10-13 14:02:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5808 states. [2020-10-13 14:02:18,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5808 states to 5808 states and 8958 transitions. [2020-10-13 14:02:18,729 INFO L78 Accepts]: Start accepts. Automaton has 5808 states and 8958 transitions. Word has length 310 [2020-10-13 14:02:18,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:02:18,729 INFO L479 AbstractCegarLoop]: Abstraction has 5808 states and 8958 transitions. [2020-10-13 14:02:18,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:02:18,730 INFO L276 IsEmpty]: Start isEmpty. Operand 5808 states and 8958 transitions. [2020-10-13 14:02:18,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-13 14:02:18,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:18,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:02:18,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:02:18,745 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:18,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:18,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1163042293, now seen corresponding path program 1 times [2020-10-13 14:02:18,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:18,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660324344] [2020-10-13 14:02:18,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:18,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:19,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:19,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:19,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:19,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:19,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:19,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:19,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:19,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:19,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:20,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:20,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:20,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:21,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:21,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:23,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:23,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-13 14:02:23,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:02:23,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 14:02:23,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:23,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:02:23,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 14:02:23,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 14:02:23,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:24,431 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 14:02:24,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:02:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:24,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:24,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:24,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:02:24,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:02:24,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:02:24,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:24,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:02:24,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:02:24,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:02:24,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:24,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:02:24,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660324344] [2020-10-13 14:02:24,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:02:24,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:02:24,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399381102] [2020-10-13 14:02:24,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:02:24,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:02:24,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:02:24,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:02:24,536 INFO L87 Difference]: Start difference. First operand 5808 states and 8958 transitions. Second operand 5 states. [2020-10-13 14:02:30,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:02:30,872 INFO L93 Difference]: Finished difference Result 15741 states and 24062 transitions. [2020-10-13 14:02:30,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:02:30,873 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2020-10-13 14:02:30,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:02:30,897 INFO L225 Difference]: With dead ends: 15741 [2020-10-13 14:02:30,898 INFO L226 Difference]: Without dead ends: 10894 [2020-10-13 14:02:30,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:02:30,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10894 states. [2020-10-13 14:02:31,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10894 to 6787. [2020-10-13 14:02:31,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6787 states. [2020-10-13 14:02:31,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6787 states to 6787 states and 10631 transitions. [2020-10-13 14:02:31,367 INFO L78 Accepts]: Start accepts. Automaton has 6787 states and 10631 transitions. Word has length 312 [2020-10-13 14:02:31,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:02:31,368 INFO L479 AbstractCegarLoop]: Abstraction has 6787 states and 10631 transitions. [2020-10-13 14:02:31,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:02:31,368 INFO L276 IsEmpty]: Start isEmpty. Operand 6787 states and 10631 transitions. [2020-10-13 14:02:31,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-13 14:02:31,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:31,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:02:31,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:02:31,384 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:31,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:31,384 INFO L82 PathProgramCache]: Analyzing trace with hash -411617721, now seen corresponding path program 1 times [2020-10-13 14:02:31,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:31,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430122810] [2020-10-13 14:02:31,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:31,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:31,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:31,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:31,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:31,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:31,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:32,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:32,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:32,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:32,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:32,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:32,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:32,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:32,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:36,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:36,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-13 14:02:36,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:02:36,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 14:02:36,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:36,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:02:36,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 14:02:36,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:02:36,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:37,064 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 14:02:37,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:02:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:37,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:37,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:37,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:02:37,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:02:37,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:02:37,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:37,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:02:37,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:02:37,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:02:37,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:37,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:02:37,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430122810] [2020-10-13 14:02:37,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:02:37,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:02:37,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993708614] [2020-10-13 14:02:37,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:02:37,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:02:37,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:02:37,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:02:37,176 INFO L87 Difference]: Start difference. First operand 6787 states and 10631 transitions. Second operand 5 states. [2020-10-13 14:02:44,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:02:44,693 INFO L93 Difference]: Finished difference Result 17786 states and 27524 transitions. [2020-10-13 14:02:44,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:02:44,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-10-13 14:02:44,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:02:44,725 INFO L225 Difference]: With dead ends: 17786 [2020-10-13 14:02:44,725 INFO L226 Difference]: Without dead ends: 12851 [2020-10-13 14:02:44,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:02:44,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12851 states. [2020-10-13 14:02:45,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12851 to 8723. [2020-10-13 14:02:45,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8723 states. [2020-10-13 14:02:45,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8723 states to 8723 states and 13904 transitions. [2020-10-13 14:02:45,388 INFO L78 Accepts]: Start accepts. Automaton has 8723 states and 13904 transitions. Word has length 314 [2020-10-13 14:02:45,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:02:45,388 INFO L479 AbstractCegarLoop]: Abstraction has 8723 states and 13904 transitions. [2020-10-13 14:02:45,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:02:45,388 INFO L276 IsEmpty]: Start isEmpty. Operand 8723 states and 13904 transitions. [2020-10-13 14:02:45,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-13 14:02:45,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:45,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:02:45,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:02:45,405 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:45,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:45,406 INFO L82 PathProgramCache]: Analyzing trace with hash 4256021, now seen corresponding path program 1 times [2020-10-13 14:02:45,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:45,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576400487] [2020-10-13 14:02:45,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:45,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:45,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:46,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:46,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:46,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:46,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:46,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:46,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:46,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:46,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:47,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:47,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:47,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:47,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:47,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:49,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:49,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:50,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:50,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-13 14:02:50,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:02:50,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 14:02:50,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:50,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:02:50,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 14:02:50,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 14:02:50,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:51,233 WARN L193 SmtUtils]: Spent 551.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 14:02:51,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:02:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:51,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:51,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:51,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:02:51,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:02:51,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:02:51,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:51,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:02:51,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:02:51,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:02:51,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:51,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:02:51,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576400487] [2020-10-13 14:02:51,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:02:51,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:02:51,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160071302] [2020-10-13 14:02:51,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:02:51,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:02:51,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:02:51,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:02:51,330 INFO L87 Difference]: Start difference. First operand 8723 states and 13904 transitions. Second operand 5 states. [2020-10-13 14:02:56,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:02:56,036 INFO L93 Difference]: Finished difference Result 12830 states and 20024 transitions. [2020-10-13 14:02:56,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:02:56,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 316 [2020-10-13 14:02:56,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:02:56,063 INFO L225 Difference]: With dead ends: 12830 [2020-10-13 14:02:56,063 INFO L226 Difference]: Without dead ends: 7636 [2020-10-13 14:02:56,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:02:56,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7636 states. [2020-10-13 14:02:56,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7636 to 7632. [2020-10-13 14:02:56,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7632 states. [2020-10-13 14:02:56,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7632 states to 7632 states and 12144 transitions. [2020-10-13 14:02:56,648 INFO L78 Accepts]: Start accepts. Automaton has 7632 states and 12144 transitions. Word has length 316 [2020-10-13 14:02:56,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:02:56,649 INFO L479 AbstractCegarLoop]: Abstraction has 7632 states and 12144 transitions. [2020-10-13 14:02:56,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:02:56,649 INFO L276 IsEmpty]: Start isEmpty. Operand 7632 states and 12144 transitions. [2020-10-13 14:02:56,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-13 14:02:56,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:56,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:02:56,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:02:56,659 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:56,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:56,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1858363013, now seen corresponding path program 1 times [2020-10-13 14:02:56,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:56,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774326937] [2020-10-13 14:02:56,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:56,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:56,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:56,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:57,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:57,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:57,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:57,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:57,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:57,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:57,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:57,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:58,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:58,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:01,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:01,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-13 14:03:01,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:03:01,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 14:03:01,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:01,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:03:01,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-13 14:03:01,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 14:03:01,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:02,300 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 14:03:02,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:02,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:02,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:02,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:02,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:02,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:03:02,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:02,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:02,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:02,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:02,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:02,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:02,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774326937] [2020-10-13 14:03:02,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:02,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:03:02,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016247085] [2020-10-13 14:03:02,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:03:02,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:02,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:03:02,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:02,464 INFO L87 Difference]: Start difference. First operand 7632 states and 12144 transitions. Second operand 4 states. [2020-10-13 14:03:03,012 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 273 [2020-10-13 14:03:08,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:08,216 INFO L93 Difference]: Finished difference Result 13972 states and 21698 transitions. [2020-10-13 14:03:08,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:03:08,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 317 [2020-10-13 14:03:08,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:08,247 INFO L225 Difference]: With dead ends: 13972 [2020-10-13 14:03:08,248 INFO L226 Difference]: Without dead ends: 10978 [2020-10-13 14:03:08,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:08,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10978 states. [2020-10-13 14:03:09,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10978 to 10976. [2020-10-13 14:03:09,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10976 states. [2020-10-13 14:03:09,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10976 states to 10976 states and 17135 transitions. [2020-10-13 14:03:09,127 INFO L78 Accepts]: Start accepts. Automaton has 10976 states and 17135 transitions. Word has length 317 [2020-10-13 14:03:09,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:09,127 INFO L479 AbstractCegarLoop]: Abstraction has 10976 states and 17135 transitions. [2020-10-13 14:03:09,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:03:09,128 INFO L276 IsEmpty]: Start isEmpty. Operand 10976 states and 17135 transitions. [2020-10-13 14:03:09,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-13 14:03:09,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:09,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:09,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:03:09,141 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:09,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:09,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1559768534, now seen corresponding path program 1 times [2020-10-13 14:03:09,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:09,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641645791] [2020-10-13 14:03:09,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:09,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:09,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:09,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:09,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:09,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:09,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:09,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:09,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:09,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:10,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:10,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:10,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:13,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:13,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:13,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:14,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:14,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-13 14:03:14,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:03:14,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 14:03:14,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:14,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:03:14,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:03:14,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 14:03:14,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:14,774 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 14:03:14,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:14,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:14,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:14,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:14,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:14,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:03:14,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:14,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:14,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:14,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:14,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:14,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:14,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641645791] [2020-10-13 14:03:14,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:14,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:03:14,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391482506] [2020-10-13 14:03:14,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:03:14,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:14,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:03:14,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:14,974 INFO L87 Difference]: Start difference. First operand 10976 states and 17135 transitions. Second operand 4 states. [2020-10-13 14:03:24,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:24,014 INFO L93 Difference]: Finished difference Result 27969 states and 42859 transitions. [2020-10-13 14:03:24,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:03:24,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 317 [2020-10-13 14:03:24,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:24,044 INFO L225 Difference]: With dead ends: 27969 [2020-10-13 14:03:24,044 INFO L226 Difference]: Without dead ends: 19988 [2020-10-13 14:03:24,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:24,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19988 states. [2020-10-13 14:03:25,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19988 to 19762. [2020-10-13 14:03:25,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19762 states. [2020-10-13 14:03:25,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19762 states to 19762 states and 30385 transitions. [2020-10-13 14:03:25,376 INFO L78 Accepts]: Start accepts. Automaton has 19762 states and 30385 transitions. Word has length 317 [2020-10-13 14:03:25,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:25,376 INFO L479 AbstractCegarLoop]: Abstraction has 19762 states and 30385 transitions. [2020-10-13 14:03:25,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:03:25,376 INFO L276 IsEmpty]: Start isEmpty. Operand 19762 states and 30385 transitions. [2020-10-13 14:03:25,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-13 14:03:25,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:25,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:25,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:03:25,401 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:25,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:25,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1044272368, now seen corresponding path program 1 times [2020-10-13 14:03:25,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:25,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995980751] [2020-10-13 14:03:25,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:25,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:25,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:25,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:25,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:25,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:25,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:25,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:25,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:26,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:26,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:26,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:26,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:26,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:28,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:28,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:28,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:30,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:30,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-13 14:03:30,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:03:30,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 14:03:30,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:30,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:03:30,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 14:03:30,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 14:03:30,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:31,011 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 14:03:31,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:31,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:31,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:31,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:31,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:31,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:03:31,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:31,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:31,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:31,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:31,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:31,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:31,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995980751] [2020-10-13 14:03:31,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:31,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:03:31,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106457027] [2020-10-13 14:03:31,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:03:31,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:31,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:03:31,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:31,128 INFO L87 Difference]: Start difference. First operand 19762 states and 30385 transitions. Second operand 4 states. [2020-10-13 14:03:41,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:41,369 INFO L93 Difference]: Finished difference Result 50182 states and 76269 transitions. [2020-10-13 14:03:41,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:03:41,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 318 [2020-10-13 14:03:41,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:41,406 INFO L225 Difference]: With dead ends: 50182 [2020-10-13 14:03:41,406 INFO L226 Difference]: Without dead ends: 34346 [2020-10-13 14:03:41,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:41,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34346 states. [2020-10-13 14:03:44,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34346 to 33770. [2020-10-13 14:03:44,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33770 states. [2020-10-13 14:03:44,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33770 states to 33770 states and 51407 transitions. [2020-10-13 14:03:44,704 INFO L78 Accepts]: Start accepts. Automaton has 33770 states and 51407 transitions. Word has length 318 [2020-10-13 14:03:44,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:44,704 INFO L479 AbstractCegarLoop]: Abstraction has 33770 states and 51407 transitions. [2020-10-13 14:03:44,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:03:44,705 INFO L276 IsEmpty]: Start isEmpty. Operand 33770 states and 51407 transitions. [2020-10-13 14:03:44,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-13 14:03:44,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:44,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:44,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:03:44,734 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:44,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:44,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1466155222, now seen corresponding path program 1 times [2020-10-13 14:03:44,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:44,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337809796] [2020-10-13 14:03:44,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:44,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:44,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:45,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:45,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:45,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:45,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:45,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:45,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:45,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:45,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:45,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:46,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:46,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:46,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:49,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:49,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-13 14:03:49,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:03:49,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 14:03:49,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:03:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:03:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 14:03:49,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:50,440 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 14:03:50,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:50,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:50,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:50,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:50,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:50,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:03:50,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:50,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:50,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:50,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:50,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:50,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337809796] [2020-10-13 14:03:50,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:50,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:03:50,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137821276] [2020-10-13 14:03:50,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:03:50,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:50,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:03:50,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:50,556 INFO L87 Difference]: Start difference. First operand 33770 states and 51407 transitions. Second operand 5 states. [2020-10-13 14:04:02,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:02,411 INFO L93 Difference]: Finished difference Result 98292 states and 149118 transitions. [2020-10-13 14:04:02,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:04:02,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 319 [2020-10-13 14:04:02,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:02,488 INFO L225 Difference]: With dead ends: 98292 [2020-10-13 14:04:02,488 INFO L226 Difference]: Without dead ends: 65440 [2020-10-13 14:04:02,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:04:02,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65440 states. [2020-10-13 14:04:08,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65440 to 65438. [2020-10-13 14:04:08,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65438 states. [2020-10-13 14:04:08,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65438 states to 65438 states and 98464 transitions. [2020-10-13 14:04:08,533 INFO L78 Accepts]: Start accepts. Automaton has 65438 states and 98464 transitions. Word has length 319 [2020-10-13 14:04:08,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:08,534 INFO L479 AbstractCegarLoop]: Abstraction has 65438 states and 98464 transitions. [2020-10-13 14:04:08,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:04:08,534 INFO L276 IsEmpty]: Start isEmpty. Operand 65438 states and 98464 transitions. [2020-10-13 14:04:08,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-13 14:04:08,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:08,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:04:08,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:04:08,608 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:08,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:08,608 INFO L82 PathProgramCache]: Analyzing trace with hash -386456304, now seen corresponding path program 1 times [2020-10-13 14:04:08,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:08,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287684425] [2020-10-13 14:04:08,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:08,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:08,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:08,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:08,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:09,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:09,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:09,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:09,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:09,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:09,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:09,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:10,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:10,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:13,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:13,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-13 14:04:13,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:04:13,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 14:04:13,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:13,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:04:13,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 14:04:13,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 14:04:13,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:14,276 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 14:04:14,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:14,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:14,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:14,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:14,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:14,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:04:14,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:14,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:14,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:14,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:14,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:14,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:04:14,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287684425] [2020-10-13 14:04:14,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:04:14,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:04:14,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287965824] [2020-10-13 14:04:14,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:04:14,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:04:14,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:04:14,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:14,406 INFO L87 Difference]: Start difference. First operand 65438 states and 98464 transitions. Second operand 4 states. [2020-10-13 14:04:31,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:31,544 INFO L93 Difference]: Finished difference Result 185997 states and 278011 transitions. [2020-10-13 14:04:31,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:04:31,545 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 321 [2020-10-13 14:04:31,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:31,703 INFO L225 Difference]: With dead ends: 185997 [2020-10-13 14:04:31,703 INFO L226 Difference]: Without dead ends: 128027 [2020-10-13 14:04:31,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:31,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128027 states. [2020-10-13 14:04:44,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128027 to 128025. [2020-10-13 14:04:44,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128025 states. [2020-10-13 14:04:44,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128025 states to 128025 states and 191121 transitions. [2020-10-13 14:04:44,633 INFO L78 Accepts]: Start accepts. Automaton has 128025 states and 191121 transitions. Word has length 321 [2020-10-13 14:04:44,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:44,634 INFO L479 AbstractCegarLoop]: Abstraction has 128025 states and 191121 transitions. [2020-10-13 14:04:44,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:04:44,634 INFO L276 IsEmpty]: Start isEmpty. Operand 128025 states and 191121 transitions. [2020-10-13 14:04:44,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-13 14:04:44,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:44,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:04:44,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:04:44,743 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:44,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:44,743 INFO L82 PathProgramCache]: Analyzing trace with hash -156243221, now seen corresponding path program 1 times [2020-10-13 14:04:44,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:44,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990964594] [2020-10-13 14:04:44,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:44,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:44,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:44,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:44,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:44,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:45,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:45,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:45,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:45,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:45,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:45,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:45,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:45,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:49,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:49,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-13 14:04:49,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:04:49,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 14:04:49,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:49,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:04:49,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 14:04:49,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 14:04:49,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:04:50,372 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 14:04:50,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:50,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:50,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:50,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:50,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:50,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:04:50,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:50,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:50,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:50,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:50,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0