/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:59:15,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:59:15,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:59:15,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:59:15,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:59:15,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:59:15,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:59:15,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:59:15,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:59:15,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:59:15,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:59:15,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:59:15,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:59:15,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:59:15,736 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:59:15,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:59:15,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:59:15,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:59:15,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:59:15,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:59:15,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:59:15,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:59:15,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:59:15,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:59:15,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:59:15,768 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:59:15,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:59:15,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:59:15,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:59:15,774 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:59:15,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:59:15,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:59:15,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:59:15,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:59:15,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:59:15,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:59:15,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:59:15,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:59:15,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:59:15,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:59:15,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:59:15,787 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 03:59:15,828 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:59:15,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:59:15,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:59:15,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:59:15,832 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:59:15,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:59:15,833 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:59:15,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:59:15,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:59:15,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:59:15,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:59:15,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:59:15,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:59:15,835 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:59:15,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:59:15,836 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:59:15,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:59:15,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:59:15,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:59:15,836 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:59:15,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:59:15,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:59:15,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:59:15,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:59:15,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:59:15,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:59:15,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:59:15,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:59:15,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:59:15,839 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:59:16,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:59:16,147 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:59:16,150 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:59:16,152 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:59:16,152 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:59:16,153 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-15 03:59:16,234 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/600bd4d09/1797011e04b24c299fa63321c4556254/FLAG8fa505998 [2020-10-15 03:59:16,737 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:59:16,738 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-15 03:59:16,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/600bd4d09/1797011e04b24c299fa63321c4556254/FLAG8fa505998 [2020-10-15 03:59:17,062 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/600bd4d09/1797011e04b24c299fa63321c4556254 [2020-10-15 03:59:17,070 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:59:17,072 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:59:17,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:59:17,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:59:17,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:59:17,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:59:17" (1/1) ... [2020-10-15 03:59:17,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363f8acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:59:17, skipping insertion in model container [2020-10-15 03:59:17,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:59:17" (1/1) ... [2020-10-15 03:59:17,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:59:17,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:59:17,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:59:17,603 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:59:17,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:59:17,780 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:59:17,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:59:17 WrapperNode [2020-10-15 03:59:17,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:59:17,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:59:17,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:59:17,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:59:17,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:59:17" (1/1) ... [2020-10-15 03:59:17,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:59:17" (1/1) ... [2020-10-15 03:59:17,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:59:17" (1/1) ... [2020-10-15 03:59:17,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:59:17" (1/1) ... [2020-10-15 03:59:17,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:59:17" (1/1) ... [2020-10-15 03:59:17,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:59:17" (1/1) ... [2020-10-15 03:59:17,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:59:17" (1/1) ... [2020-10-15 03:59:17,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:59:17,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:59:17,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:59:17,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:59:17,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:59:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:59:17,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:59:17,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:59:17,941 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:59:17,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:59:17,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:59:17,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:59:17,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:59:17,942 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:59:17,943 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:59:17,943 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:59:17,943 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:59:17,943 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:59:17,943 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:59:17,943 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:59:17,943 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:59:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:59:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:59:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-15 03:59:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:59:17,945 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:59:17,945 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:59:17,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:59:17,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:59:19,212 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:59:19,212 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:59:19,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:59:19 BoogieIcfgContainer [2020-10-15 03:59:19,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:59:19,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:59:19,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:59:19,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:59:19,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:59:17" (1/3) ... [2020-10-15 03:59:19,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4135ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:59:19, skipping insertion in model container [2020-10-15 03:59:19,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:59:17" (2/3) ... [2020-10-15 03:59:19,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4135ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:59:19, skipping insertion in model container [2020-10-15 03:59:19,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:59:19" (3/3) ... [2020-10-15 03:59:19,227 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-15 03:59:19,238 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:59:19,246 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:59:19,260 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:59:19,286 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:59:19,287 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:59:19,287 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:59:19,287 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:59:19,287 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:59:19,288 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:59:19,288 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:59:19,288 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:59:19,312 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states. [2020-10-15 03:59:19,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-15 03:59:19,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:59:19,325 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] [2020-10-15 03:59:19,326 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:59:19,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:59:19,332 INFO L82 PathProgramCache]: Analyzing trace with hash -191598454, now seen corresponding path program 1 times [2020-10-15 03:59:19,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:59:19,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493503008] [2020-10-15 03:59:19,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:59:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:19,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:20,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:20,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:24,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:24,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-15 03:59:24,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:59:24,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-15 03:59:24,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:24,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:24,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:59:24,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:59:24,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 03:59:24,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:59:25,375 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 03:59:25,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:59:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:25,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:25,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:25,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:59:25,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:59:25,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:59:25,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:25,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:25,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:59:25,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:59:25,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:59:25,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:59:25,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:59:25,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493503008] [2020-10-15 03:59:25,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:59:25,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:59:25,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839614837] [2020-10-15 03:59:25,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:59:25,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:59:25,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:59:25,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:59:25,504 INFO L87 Difference]: Start difference. First operand 264 states. Second operand 9 states. [2020-10-15 03:59:25,922 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 03:59:27,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:59:27,727 INFO L93 Difference]: Finished difference Result 1176 states and 1900 transitions. [2020-10-15 03:59:27,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:59:27,730 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-10-15 03:59:27,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:59:27,757 INFO L225 Difference]: With dead ends: 1176 [2020-10-15 03:59:27,757 INFO L226 Difference]: Without dead ends: 1027 [2020-10-15 03:59:27,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:59:27,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-10-15 03:59:27,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 400. [2020-10-15 03:59:27,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-15 03:59:27,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 597 transitions. [2020-10-15 03:59:27,870 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 597 transitions. Word has length 101 [2020-10-15 03:59:27,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:59:27,872 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 597 transitions. [2020-10-15 03:59:27,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:59:27,872 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 597 transitions. [2020-10-15 03:59:27,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 03:59:27,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:59:27,877 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] [2020-10-15 03:59:27,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:59:27,878 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:59:27,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:59:27,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1985426171, now seen corresponding path program 1 times [2020-10-15 03:59:27,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:59:27,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304207837] [2020-10-15 03:59:27,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:59:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:28,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:28,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:29,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:29,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 03:59:29,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:59:29,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1689 [2020-10-15 03:59:29,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:29,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:59:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:59:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 03:59:29,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:59:30,169 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 03:59:30,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:59:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:30,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:30,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:30,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:59:30,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:59:30,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:59:30,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:30,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:30,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:59:30,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:59:30,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:59:30,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:59:30,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:59:30,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304207837] [2020-10-15 03:59:30,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:59:30,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:59:30,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124810615] [2020-10-15 03:59:30,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:59:30,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:59:30,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:59:30,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:59:30,306 INFO L87 Difference]: Start difference. First operand 400 states and 597 transitions. Second operand 9 states. [2020-10-15 03:59:35,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:59:35,359 INFO L93 Difference]: Finished difference Result 1977 states and 3061 transitions. [2020-10-15 03:59:35,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:59:35,359 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-15 03:59:35,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:59:35,373 INFO L225 Difference]: With dead ends: 1977 [2020-10-15 03:59:35,373 INFO L226 Difference]: Without dead ends: 1681 [2020-10-15 03:59:35,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:59:35,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2020-10-15 03:59:35,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1671. [2020-10-15 03:59:35,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1671 states. [2020-10-15 03:59:35,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2580 transitions. [2020-10-15 03:59:35,525 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2580 transitions. Word has length 102 [2020-10-15 03:59:35,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:59:35,526 INFO L479 AbstractCegarLoop]: Abstraction has 1671 states and 2580 transitions. [2020-10-15 03:59:35,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:59:35,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2580 transitions. [2020-10-15 03:59:35,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 03:59:35,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:59:35,534 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] [2020-10-15 03:59:35,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:59:35,534 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:59:35,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:59:35,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1165953371, now seen corresponding path program 1 times [2020-10-15 03:59:35,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:59:35,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615663165] [2020-10-15 03:59:35,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:59:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:35,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:35,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:36,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:36,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 03:59:36,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:59:36,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 824 [2020-10-15 03:59:36,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:36,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:36,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:59:36,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:59:36,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 03:59:36,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:59:36,690 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 03:59:36,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:59:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:36,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:36,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:36,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:59:36,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:59:36,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 03:59:36,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:36,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:36,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:59:36,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:59:36,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:59:36,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:59:36,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:59:36,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615663165] [2020-10-15 03:59:36,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:59:36,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:59:36,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436139723] [2020-10-15 03:59:36,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:59:36,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:59:36,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:59:36,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:59:36,759 INFO L87 Difference]: Start difference. First operand 1671 states and 2580 transitions. Second operand 6 states. [2020-10-15 03:59:37,054 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 03:59:38,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:59:38,568 INFO L93 Difference]: Finished difference Result 4619 states and 7202 transitions. [2020-10-15 03:59:38,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:59:38,569 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-15 03:59:38,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:59:38,587 INFO L225 Difference]: With dead ends: 4619 [2020-10-15 03:59:38,587 INFO L226 Difference]: Without dead ends: 3004 [2020-10-15 03:59:38,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:59:38,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3004 states. [2020-10-15 03:59:38,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3004 to 3002. [2020-10-15 03:59:38,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3002 states. [2020-10-15 03:59:38,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3002 states to 3002 states and 4657 transitions. [2020-10-15 03:59:38,806 INFO L78 Accepts]: Start accepts. Automaton has 3002 states and 4657 transitions. Word has length 103 [2020-10-15 03:59:38,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:59:38,806 INFO L479 AbstractCegarLoop]: Abstraction has 3002 states and 4657 transitions. [2020-10-15 03:59:38,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:59:38,807 INFO L276 IsEmpty]: Start isEmpty. Operand 3002 states and 4657 transitions. [2020-10-15 03:59:38,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 03:59:38,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:59:38,810 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] [2020-10-15 03:59:38,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:59:38,811 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:59:38,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:59:38,811 INFO L82 PathProgramCache]: Analyzing trace with hash -956390806, now seen corresponding path program 1 times [2020-10-15 03:59:38,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:59:38,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661488988] [2020-10-15 03:59:38,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:59:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:38,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:38,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:39,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:39,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 03:59:39,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:59:39,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1049 [2020-10-15 03:59:39,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:39,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:39,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:59:39,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:59:39,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 03:59:39,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:59:40,207 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 03:59:40,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:59:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:40,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:40,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:40,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:59:40,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:59:40,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 03:59:40,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:40,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:40,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:59:40,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:59:40,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:59:40,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:59:40,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:59:40,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661488988] [2020-10-15 03:59:40,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:59:40,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:59:40,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405635051] [2020-10-15 03:59:40,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:59:40,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:59:40,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:59:40,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:59:40,270 INFO L87 Difference]: Start difference. First operand 3002 states and 4657 transitions. Second operand 6 states. [2020-10-15 03:59:40,567 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 03:59:42,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:59:42,251 INFO L93 Difference]: Finished difference Result 8486 states and 13226 transitions. [2020-10-15 03:59:42,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:59:42,251 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-15 03:59:42,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:59:42,278 INFO L225 Difference]: With dead ends: 8486 [2020-10-15 03:59:42,278 INFO L226 Difference]: Without dead ends: 5556 [2020-10-15 03:59:42,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:59:42,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5556 states. [2020-10-15 03:59:42,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5556 to 5554. [2020-10-15 03:59:42,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5554 states. [2020-10-15 03:59:42,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5554 states to 5554 states and 8606 transitions. [2020-10-15 03:59:42,739 INFO L78 Accepts]: Start accepts. Automaton has 5554 states and 8606 transitions. Word has length 103 [2020-10-15 03:59:42,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:59:42,741 INFO L479 AbstractCegarLoop]: Abstraction has 5554 states and 8606 transitions. [2020-10-15 03:59:42,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:59:42,741 INFO L276 IsEmpty]: Start isEmpty. Operand 5554 states and 8606 transitions. [2020-10-15 03:59:42,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 03:59:42,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:59:42,747 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] [2020-10-15 03:59:42,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:59:42,748 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:59:42,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:59:42,748 INFO L82 PathProgramCache]: Analyzing trace with hash 2106159240, now seen corresponding path program 1 times [2020-10-15 03:59:42,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:59:42,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669032461] [2020-10-15 03:59:42,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:59:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:42,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:43,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:43,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:43,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 03:59:43,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:59:43,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-10-15 03:59:43,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:43,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:43,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:59:43,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:59:43,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 03:59:43,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:59:43,895 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 03:59:43,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:59:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:43,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:43,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:43,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:59:43,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:59:43,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 03:59:43,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:43,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:43,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:59:43,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:59:43,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:59:43,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:59:43,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:59:43,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669032461] [2020-10-15 03:59:43,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:59:43,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:59:43,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543972299] [2020-10-15 03:59:43,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:59:43,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:59:43,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:59:43,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:59:43,972 INFO L87 Difference]: Start difference. First operand 5554 states and 8606 transitions. Second operand 6 states. [2020-10-15 03:59:44,216 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-15 03:59:46,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:59:46,086 INFO L93 Difference]: Finished difference Result 15654 states and 24290 transitions. [2020-10-15 03:59:46,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:59:46,087 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-15 03:59:46,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:59:46,147 INFO L225 Difference]: With dead ends: 15654 [2020-10-15 03:59:46,147 INFO L226 Difference]: Without dead ends: 10225 [2020-10-15 03:59:46,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:59:46,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10225 states. [2020-10-15 03:59:46,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10225 to 10223. [2020-10-15 03:59:46,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10223 states. [2020-10-15 03:59:46,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10223 states to 10223 states and 15768 transitions. [2020-10-15 03:59:46,836 INFO L78 Accepts]: Start accepts. Automaton has 10223 states and 15768 transitions. Word has length 103 [2020-10-15 03:59:46,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:59:46,836 INFO L479 AbstractCegarLoop]: Abstraction has 10223 states and 15768 transitions. [2020-10-15 03:59:46,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:59:46,836 INFO L276 IsEmpty]: Start isEmpty. Operand 10223 states and 15768 transitions. [2020-10-15 03:59:46,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 03:59:46,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:59:46,844 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] [2020-10-15 03:59:46,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:59:46,844 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:59:46,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:59:46,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1854219671, now seen corresponding path program 1 times [2020-10-15 03:59:46,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:59:46,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216969618] [2020-10-15 03:59:46,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:59:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:46,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:47,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:47,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:47,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 03:59:47,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:59:47,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-10-15 03:59:47,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:47,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:47,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:59:47,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:59:47,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-15 03:59:47,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 83 [2020-10-15 03:59:47,833 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 03:59:47,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:59:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:47,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:47,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:47,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:59:47,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:59:47,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 03:59:47,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:47,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:47,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:59:47,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:59:47,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:59:47,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:59:47,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:59:47,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216969618] [2020-10-15 03:59:47,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:59:47,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:59:47,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335563317] [2020-10-15 03:59:47,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:59:47,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:59:47,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:59:47,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:59:47,923 INFO L87 Difference]: Start difference. First operand 10223 states and 15768 transitions. Second operand 6 states. [2020-10-15 03:59:48,253 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:59:50,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:59:50,406 INFO L93 Difference]: Finished difference Result 29248 states and 45177 transitions. [2020-10-15 03:59:50,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:59:50,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-15 03:59:50,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:59:50,466 INFO L225 Difference]: With dead ends: 29248 [2020-10-15 03:59:50,466 INFO L226 Difference]: Without dead ends: 19187 [2020-10-15 03:59:50,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:59:50,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19187 states. [2020-10-15 03:59:51,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19187 to 19185. [2020-10-15 03:59:51,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19185 states. [2020-10-15 03:59:51,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19185 states to 19185 states and 29492 transitions. [2020-10-15 03:59:51,849 INFO L78 Accepts]: Start accepts. Automaton has 19185 states and 29492 transitions. Word has length 103 [2020-10-15 03:59:51,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:59:51,850 INFO L479 AbstractCegarLoop]: Abstraction has 19185 states and 29492 transitions. [2020-10-15 03:59:51,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:59:51,850 INFO L276 IsEmpty]: Start isEmpty. Operand 19185 states and 29492 transitions. [2020-10-15 03:59:51,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 03:59:51,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:59:51,860 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] [2020-10-15 03:59:51,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:59:51,860 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:59:51,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:59:51,861 INFO L82 PathProgramCache]: Analyzing trace with hash 347082406, now seen corresponding path program 1 times [2020-10-15 03:59:51,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:59:51,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863282839] [2020-10-15 03:59:51,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:59:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:51,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:52,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:52,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:52,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 03:59:52,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:59:52,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-10-15 03:59:52,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:52,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:52,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:59:52,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:59:52,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-15 03:59:52,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:59:52,679 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 03:59:52,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:59:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:52,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:52,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:52,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:59:52,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:59:52,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 03:59:52,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:52,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:52,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:59:52,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:59:52,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:59:52,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:59:52,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:59:52,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863282839] [2020-10-15 03:59:52,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:59:52,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:59:52,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966814036] [2020-10-15 03:59:52,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:59:52,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:59:52,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:59:52,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:59:52,765 INFO L87 Difference]: Start difference. First operand 19185 states and 29492 transitions. Second operand 6 states. [2020-10-15 03:59:53,231 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 03:59:56,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:59:56,415 INFO L93 Difference]: Finished difference Result 55753 states and 85772 transitions. [2020-10-15 03:59:56,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:59:56,416 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-15 03:59:56,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:59:56,494 INFO L225 Difference]: With dead ends: 55753 [2020-10-15 03:59:56,495 INFO L226 Difference]: Without dead ends: 36771 [2020-10-15 03:59:56,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:59:56,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36771 states. [2020-10-15 03:59:58,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36771 to 36769. [2020-10-15 03:59:58,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36769 states. [2020-10-15 03:59:58,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36769 states to 36769 states and 56334 transitions. [2020-10-15 03:59:58,600 INFO L78 Accepts]: Start accepts. Automaton has 36769 states and 56334 transitions. Word has length 103 [2020-10-15 03:59:58,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:59:58,600 INFO L479 AbstractCegarLoop]: Abstraction has 36769 states and 56334 transitions. [2020-10-15 03:59:58,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:59:58,600 INFO L276 IsEmpty]: Start isEmpty. Operand 36769 states and 56334 transitions. [2020-10-15 03:59:58,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 03:59:58,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:59:58,612 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] [2020-10-15 03:59:58,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:59:58,613 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:59:58,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:59:58,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1826926457, now seen corresponding path program 1 times [2020-10-15 03:59:58,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:59:58,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864499336] [2020-10-15 03:59:58,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:59:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:58,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:58,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:59,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:59,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 03:59:59,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:59:59,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-10-15 03:59:59,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:59,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:59,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:59:59,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:59:59,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 03:59:59,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:59:59,508 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 03:59:59,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:59:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:59,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:59,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:59,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:59:59,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:59:59,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-15 03:59:59,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:59,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:59,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:59:59,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:59:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:59:59,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:59:59,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:59:59,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864499336] [2020-10-15 03:59:59,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:59:59,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:59:59,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686660183] [2020-10-15 03:59:59,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:59:59,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:59:59,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:59:59,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:59:59,614 INFO L87 Difference]: Start difference. First operand 36769 states and 56334 transitions. Second operand 6 states. [2020-10-15 03:59:59,952 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 04:00:05,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:00:05,062 INFO L93 Difference]: Finished difference Result 108992 states and 166795 transitions. [2020-10-15 04:00:05,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:00:05,062 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-15 04:00:05,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:00:05,243 INFO L225 Difference]: With dead ends: 108992 [2020-10-15 04:00:05,243 INFO L226 Difference]: Without dead ends: 72318 [2020-10-15 04:00:05,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:00:05,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72318 states. [2020-10-15 04:00:10,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72318 to 72316. [2020-10-15 04:00:10,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72316 states. [2020-10-15 04:00:10,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72316 states to 72316 states and 109991 transitions. [2020-10-15 04:00:10,280 INFO L78 Accepts]: Start accepts. Automaton has 72316 states and 109991 transitions. Word has length 103 [2020-10-15 04:00:10,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:00:10,281 INFO L479 AbstractCegarLoop]: Abstraction has 72316 states and 109991 transitions. [2020-10-15 04:00:10,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 04:00:10,281 INFO L276 IsEmpty]: Start isEmpty. Operand 72316 states and 109991 transitions. [2020-10-15 04:00:10,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-15 04:00:10,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:00:10,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:00:10,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:00:10,299 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:00:10,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:00:10,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1541442246, now seen corresponding path program 1 times [2020-10-15 04:00:10,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:00:10,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278522688] [2020-10-15 04:00:10,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:00:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:00:10,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:00:10,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:00:10,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:00:13,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:00:13,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-15 04:00:13,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:00:13,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3041 [2020-10-15 04:00:13,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:00:13,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:00:13,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 04:00:13,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:00:13,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-15 04:00:13,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:00:13,801 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:00:13,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:00:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:00:13,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:00:13,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:00:13,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:00:13,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:00:13,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:00:13,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:00:13,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:00:13,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:00:13,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:00:13,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:00:13,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:00:13,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:00:13,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278522688] [2020-10-15 04:00:13,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:00:13,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 04:00:13,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047227128] [2020-10-15 04:00:13,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:00:13,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:00:13,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:00:13,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:00:13,861 INFO L87 Difference]: Start difference. First operand 72316 states and 109991 transitions. Second operand 9 states. [2020-10-15 04:00:14,106 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 04:00:38,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:00:38,579 INFO L93 Difference]: Finished difference Result 424980 states and 644673 transitions. [2020-10-15 04:00:38,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 04:00:38,580 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-10-15 04:00:38,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:00:39,139 INFO L225 Difference]: With dead ends: 424980 [2020-10-15 04:00:39,139 INFO L226 Difference]: Without dead ends: 353991 [2020-10-15 04:00:39,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 04:00:39,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353991 states. [2020-10-15 04:00:50,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353991 to 72388. [2020-10-15 04:00:50,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72388 states. [2020-10-15 04:00:50,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72388 states to 72388 states and 110058 transitions. [2020-10-15 04:00:50,565 INFO L78 Accepts]: Start accepts. Automaton has 72388 states and 110058 transitions. Word has length 104 [2020-10-15 04:00:50,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:00:50,565 INFO L479 AbstractCegarLoop]: Abstraction has 72388 states and 110058 transitions. [2020-10-15 04:00:50,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:00:50,566 INFO L276 IsEmpty]: Start isEmpty. Operand 72388 states and 110058 transitions. [2020-10-15 04:00:50,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-15 04:00:50,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:00:50,581 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] [2020-10-15 04:00:50,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:00:50,581 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:00:50,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:00:50,582 INFO L82 PathProgramCache]: Analyzing trace with hash -826435174, now seen corresponding path program 1 times [2020-10-15 04:00:50,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:00:50,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473743317] [2020-10-15 04:00:50,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:00:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:00:50,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:00:50,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:00:50,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:00:53,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:00:53,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-15 04:00:53,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:00:53,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2888 [2020-10-15 04:00:53,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:00:53,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:00:53,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 04:00:53,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:00:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-15 04:00:53,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:00:53,952 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:00:53,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:00:53,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:00:53,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:00:53,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:00:53,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:00:53,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:00:53,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 04:00:53,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:00:53,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:00:53,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:00:53,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:00:53,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:00:53,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:00:54,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:00:54,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473743317] [2020-10-15 04:00:54,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:00:54,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 04:00:54,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726654821] [2020-10-15 04:00:54,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:00:54,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:00:54,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:00:54,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:00:54,030 INFO L87 Difference]: Start difference. First operand 72388 states and 110058 transitions. Second operand 9 states. [2020-10-15 04:00:54,294 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 04:01:32,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:01:32,766 INFO L93 Difference]: Finished difference Result 419527 states and 636566 transitions. [2020-10-15 04:01:32,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 04:01:32,766 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-10-15 04:01:32,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:01:33,362 INFO L225 Difference]: With dead ends: 419527 [2020-10-15 04:01:33,363 INFO L226 Difference]: Without dead ends: 358634 [2020-10-15 04:01:33,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 04:01:33,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358634 states. [2020-10-15 04:01:42,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358634 to 72799. [2020-10-15 04:01:42,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72799 states. [2020-10-15 04:01:42,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72799 states to 72799 states and 110580 transitions. [2020-10-15 04:01:42,906 INFO L78 Accepts]: Start accepts. Automaton has 72799 states and 110580 transitions. Word has length 104 [2020-10-15 04:01:42,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:01:42,906 INFO L479 AbstractCegarLoop]: Abstraction has 72799 states and 110580 transitions. [2020-10-15 04:01:42,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:01:42,906 INFO L276 IsEmpty]: Start isEmpty. Operand 72799 states and 110580 transitions. [2020-10-15 04:01:42,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-15 04:01:42,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:01:42,918 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] [2020-10-15 04:01:42,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:01:42,918 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:01:42,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:01:42,919 INFO L82 PathProgramCache]: Analyzing trace with hash 918364762, now seen corresponding path program 1 times [2020-10-15 04:01:42,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:01:42,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927454847] [2020-10-15 04:01:42,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:01:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:01:42,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:43,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:43,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:44,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:01:44,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-15 04:01:44,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:01:44,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1477 [2020-10-15 04:01:44,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:01:44,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:01:44,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 04:01:44,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:01:44,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-15 04:01:44,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:01:44,630 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-15 04:01:44,863 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:01:44,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:01:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:01:44,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:44,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:01:44,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:01:44,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:01:44,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:01:44,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:01:44,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:01:44,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:01:44,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:01:44,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:01:44,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:01:44,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:01:44,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927454847] [2020-10-15 04:01:44,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:01:44,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 04:01:44,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564986920] [2020-10-15 04:01:44,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:01:44,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:01:44,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:01:44,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:01:44,914 INFO L87 Difference]: Start difference. First operand 72799 states and 110580 transitions. Second operand 9 states. [2020-10-15 04:01:45,183 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 04:02:30,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:30,515 INFO L93 Difference]: Finished difference Result 382707 states and 580770 transitions. [2020-10-15 04:02:30,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 04:02:30,516 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-10-15 04:02:30,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:31,054 INFO L225 Difference]: With dead ends: 382707 [2020-10-15 04:02:31,054 INFO L226 Difference]: Without dead ends: 344340 [2020-10-15 04:02:31,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 04:02:31,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344340 states. [2020-10-15 04:02:43,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344340 to 73682. [2020-10-15 04:02:43,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73682 states. [2020-10-15 04:02:43,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73682 states to 73682 states and 111771 transitions. [2020-10-15 04:02:43,131 INFO L78 Accepts]: Start accepts. Automaton has 73682 states and 111771 transitions. Word has length 104 [2020-10-15 04:02:43,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:43,132 INFO L479 AbstractCegarLoop]: Abstraction has 73682 states and 111771 transitions. [2020-10-15 04:02:43,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:02:43,132 INFO L276 IsEmpty]: Start isEmpty. Operand 73682 states and 111771 transitions. [2020-10-15 04:02:43,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-15 04:02:43,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:43,145 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] [2020-10-15 04:02:43,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:02:43,145 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:43,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:43,145 INFO L82 PathProgramCache]: Analyzing trace with hash -881948998, now seen corresponding path program 1 times [2020-10-15 04:02:43,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:43,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097238411] [2020-10-15 04:02:43,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:43,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:43,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:43,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:44,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:44,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-15 04:02:44,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:02:44,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1634 [2020-10-15 04:02:44,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:44,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:44,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 04:02:44,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:02:44,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-15 04:02:44,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:02:45,240 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:02:45,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:45,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:45,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:45,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:45,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:45,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:02:45,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:45,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:45,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:45,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:45,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:45,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:02:45,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:02:45,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097238411] [2020-10-15 04:02:45,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:45,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 04:02:45,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049611625] [2020-10-15 04:02:45,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:02:45,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:45,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:02:45,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:02:45,292 INFO L87 Difference]: Start difference. First operand 73682 states and 111771 transitions. Second operand 9 states. [2020-10-15 04:02:45,576 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187