/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:16:33,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:16:33,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:16:33,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:16:33,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:16:33,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:16:33,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:16:33,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:16:33,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:16:33,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:16:33,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:16:33,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:16:33,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:16:33,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:16:33,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:16:33,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:16:33,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:16:33,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:16:33,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:16:33,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:16:33,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:16:33,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:16:33,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:16:33,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:16:33,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:16:33,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:16:33,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:16:33,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:16:33,891 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:16:33,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:16:33,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:16:33,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:16:33,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:16:33,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:16:33,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:16:33,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:16:33,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:16:33,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:16:33,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:16:33,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:16:33,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:16:33,906 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 20:16:33,948 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:16:33,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:16:33,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:16:33,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:16:33,953 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:16:33,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:16:33,953 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:16:33,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:16:33,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:16:33,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:16:33,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:16:33,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:16:33,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:16:33,956 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:16:33,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:16:33,956 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:16:33,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:16:33,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:16:33,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:16:33,957 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:16:33,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:16:33,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:16:33,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:16:33,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:16:33,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:16:33,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:16:33,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:16:33,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:16:33,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:16:33,959 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:16:34,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:16:34,286 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:16:34,290 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:16:34,292 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:16:34,292 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:16:34,292 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 20:16:34,363 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/475c9e456/e73afabe7ba54c0084d02543d61da56f/FLAGf2826939b [2020-10-12 20:16:35,010 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:16:35,011 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 20:16:35,029 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/475c9e456/e73afabe7ba54c0084d02543d61da56f/FLAGf2826939b [2020-10-12 20:16:35,226 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/475c9e456/e73afabe7ba54c0084d02543d61da56f [2020-10-12 20:16:35,235 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:16:35,237 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:16:35,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:16:35,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:16:35,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:16:35,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:16:35" (1/1) ... [2020-10-12 20:16:35,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5af4c453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:16:35, skipping insertion in model container [2020-10-12 20:16:35,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:16:35" (1/1) ... [2020-10-12 20:16:35,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:16:35,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:16:35,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:16:35,857 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:16:36,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:16:36,062 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:16:36,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:16:36 WrapperNode [2020-10-12 20:16:36,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:16:36,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:16:36,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:16:36,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:16:36,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:16:36" (1/1) ... [2020-10-12 20:16:36,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:16:36" (1/1) ... [2020-10-12 20:16:36,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:16:36" (1/1) ... [2020-10-12 20:16:36,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:16:36" (1/1) ... [2020-10-12 20:16:36,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:16:36" (1/1) ... [2020-10-12 20:16:36,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:16:36" (1/1) ... [2020-10-12 20:16:36,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:16:36" (1/1) ... [2020-10-12 20:16:36,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:16:36,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:16:36,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:16:36,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:16:36,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:16:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:16:36,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:16:36,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:16:36,274 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:16:36,274 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:16:36,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:16:36,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:16:36,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 20:16:36,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:16:36,275 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:16:36,276 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:16:36,276 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:16:36,276 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:16:36,276 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:16:36,277 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:16:36,277 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:16:36,277 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:16:36,277 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:16:36,277 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:16:36,278 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:16:36,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:16:36,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:16:37,665 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:16:37,667 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:16:37,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:16:37 BoogieIcfgContainer [2020-10-12 20:16:37,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:16:37,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:16:37,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:16:37,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:16:37,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:16:35" (1/3) ... [2020-10-12 20:16:37,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7598ac81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:16:37, skipping insertion in model container [2020-10-12 20:16:37,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:16:36" (2/3) ... [2020-10-12 20:16:37,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7598ac81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:16:37, skipping insertion in model container [2020-10-12 20:16:37,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:16:37" (3/3) ... [2020-10-12 20:16:37,690 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 20:16:37,701 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:16:37,709 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:16:37,723 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:16:37,752 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:16:37,752 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:16:37,752 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:16:37,752 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:16:37,752 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:16:37,753 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:16:37,753 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:16:37,753 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:16:37,780 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states. [2020-10-12 20:16:37,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-12 20:16:37,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:37,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:37,800 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:37,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:37,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1531384802, now seen corresponding path program 1 times [2020-10-12 20:16:37,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:37,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507999844] [2020-10-12 20:16:37,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:38,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:38,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:38,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:39,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:39,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:39,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:39,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:39,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:39,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:40,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:41,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:41,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:43,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:43,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-12 20:16:43,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:16:43,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:16:43,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:43,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:16:43,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:16:43,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 20:16:43,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:16:43,815 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:16:43,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:43,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:43,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:43,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:43,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:43,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 20:16:43,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:43,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:16:43,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:43,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:16:43,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:43,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:16:43,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507999844] [2020-10-12 20:16:43,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:43,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:16:43,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84837537] [2020-10-12 20:16:43,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:16:43,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:43,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:16:43,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:16:43,957 INFO L87 Difference]: Start difference. First operand 349 states. Second operand 5 states. [2020-10-12 20:16:47,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:47,503 INFO L93 Difference]: Finished difference Result 992 states and 1742 transitions. [2020-10-12 20:16:47,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:16:47,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-12 20:16:47,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:47,526 INFO L225 Difference]: With dead ends: 992 [2020-10-12 20:16:47,526 INFO L226 Difference]: Without dead ends: 660 [2020-10-12 20:16:47,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:16:47,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2020-10-12 20:16:47,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 658. [2020-10-12 20:16:47,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-10-12 20:16:47,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 957 transitions. [2020-10-12 20:16:47,634 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 957 transitions. Word has length 159 [2020-10-12 20:16:47,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:47,635 INFO L479 AbstractCegarLoop]: Abstraction has 658 states and 957 transitions. [2020-10-12 20:16:47,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:16:47,635 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 957 transitions. [2020-10-12 20:16:47,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-12 20:16:47,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:47,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:47,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:16:47,642 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:47,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:47,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1979468469, now seen corresponding path program 1 times [2020-10-12 20:16:47,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:47,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489736746] [2020-10-12 20:16:47,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:47,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:47,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:47,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:47,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:48,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:48,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:48,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:48,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:48,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:48,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:49,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:50,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:52,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:52,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-12 20:16:52,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:16:52,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 20:16:52,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:52,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:16:52,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:16:52,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 20:16:52,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:53,036 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:16:53,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:53,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:53,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:53,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:53,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:53,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:16:53,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:53,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:16:53,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:53,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:16:53,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:16:53,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:16:53,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489736746] [2020-10-12 20:16:53,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:53,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:16:53,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826525328] [2020-10-12 20:16:53,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:16:53,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:53,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:16:53,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:16:53,141 INFO L87 Difference]: Start difference. First operand 658 states and 957 transitions. Second operand 5 states. [2020-10-12 20:16:56,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:56,700 INFO L93 Difference]: Finished difference Result 1890 states and 2733 transitions. [2020-10-12 20:16:56,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:16:56,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-12 20:16:56,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:56,715 INFO L225 Difference]: With dead ends: 1890 [2020-10-12 20:16:56,715 INFO L226 Difference]: Without dead ends: 1257 [2020-10-12 20:16:56,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:16:56,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2020-10-12 20:16:56,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1255. [2020-10-12 20:16:56,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1255 states. [2020-10-12 20:16:56,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1799 transitions. [2020-10-12 20:16:56,829 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1799 transitions. Word has length 160 [2020-10-12 20:16:56,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:56,829 INFO L479 AbstractCegarLoop]: Abstraction has 1255 states and 1799 transitions. [2020-10-12 20:16:56,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:16:56,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1799 transitions. [2020-10-12 20:16:56,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-12 20:16:56,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:56,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:56,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:16:56,839 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:56,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:56,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1809663364, now seen corresponding path program 1 times [2020-10-12 20:16:56,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:56,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197891352] [2020-10-12 20:16:56,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:56,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:56,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:56,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:57,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:57,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:57,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:57,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:57,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:57,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:59,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:59,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:01,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:01,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-12 20:17:01,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:17:01,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 20:17:01,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:01,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:17:01,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:17:01,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 20:17:01,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:17:02,281 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:17:02,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:02,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:02,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:02,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:02,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:02,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 20:17:02,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:02,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:17:02,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:02,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:17:02,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:02,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197891352] [2020-10-12 20:17:02,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:02,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:17:02,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575452880] [2020-10-12 20:17:02,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:17:02,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:02,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:17:02,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:17:02,353 INFO L87 Difference]: Start difference. First operand 1255 states and 1799 transitions. Second operand 5 states. [2020-10-12 20:17:05,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:05,025 INFO L93 Difference]: Finished difference Result 3634 states and 5190 transitions. [2020-10-12 20:17:05,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:17:05,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-12 20:17:05,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:05,039 INFO L225 Difference]: With dead ends: 3634 [2020-10-12 20:17:05,039 INFO L226 Difference]: Without dead ends: 2418 [2020-10-12 20:17:05,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:17:05,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2418 states. [2020-10-12 20:17:05,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 2416. [2020-10-12 20:17:05,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2416 states. [2020-10-12 20:17:05,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2416 states to 2416 states and 3421 transitions. [2020-10-12 20:17:05,175 INFO L78 Accepts]: Start accepts. Automaton has 2416 states and 3421 transitions. Word has length 161 [2020-10-12 20:17:05,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:05,177 INFO L479 AbstractCegarLoop]: Abstraction has 2416 states and 3421 transitions. [2020-10-12 20:17:05,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:17:05,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2416 states and 3421 transitions. [2020-10-12 20:17:05,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-12 20:17:05,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:05,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:05,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:17:05,184 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:05,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:05,184 INFO L82 PathProgramCache]: Analyzing trace with hash 868268558, now seen corresponding path program 1 times [2020-10-12 20:17:05,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:05,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792917362] [2020-10-12 20:17:05,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:05,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:05,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:05,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:05,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:05,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:05,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:05,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:05,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:07,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:07,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:10,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:10,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-12 20:17:10,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:17:10,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 20:17:10,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:10,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:17:10,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:17:10,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 20:17:10,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:10,584 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:17:10,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:10,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:10,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:10,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:10,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:10,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 20:17:10,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:10,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:17:10,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:10,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:17:10,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:17:10,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:10,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792917362] [2020-10-12 20:17:10,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:10,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:17:10,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054391734] [2020-10-12 20:17:10,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:17:10,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:10,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:17:10,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:17:10,750 INFO L87 Difference]: Start difference. First operand 2416 states and 3421 transitions. Second operand 5 states. [2020-10-12 20:17:13,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:13,774 INFO L93 Difference]: Finished difference Result 6861 states and 9683 transitions. [2020-10-12 20:17:13,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:17:13,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-12 20:17:13,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:13,795 INFO L225 Difference]: With dead ends: 6861 [2020-10-12 20:17:13,796 INFO L226 Difference]: Without dead ends: 4638 [2020-10-12 20:17:13,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:17:13,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4638 states. [2020-10-12 20:17:13,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4638 to 4636. [2020-10-12 20:17:13,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4636 states. [2020-10-12 20:17:14,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4636 states to 4636 states and 6467 transitions. [2020-10-12 20:17:14,006 INFO L78 Accepts]: Start accepts. Automaton has 4636 states and 6467 transitions. Word has length 162 [2020-10-12 20:17:14,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:14,007 INFO L479 AbstractCegarLoop]: Abstraction has 4636 states and 6467 transitions. [2020-10-12 20:17:14,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:17:14,007 INFO L276 IsEmpty]: Start isEmpty. Operand 4636 states and 6467 transitions. [2020-10-12 20:17:14,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-12 20:17:14,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:14,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:14,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:17:14,017 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:14,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:14,018 INFO L82 PathProgramCache]: Analyzing trace with hash -688232646, now seen corresponding path program 1 times [2020-10-12 20:17:14,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:14,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76299644] [2020-10-12 20:17:14,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:14,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:14,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:14,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:14,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:14,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:14,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:17,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:17,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:17,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:19,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:19,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-12 20:17:19,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:17:19,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 20:17:19,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:19,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:17:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 20:17:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 20:17:19,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:19,374 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:17:19,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:19,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:19,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:19,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:19,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:19,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:17:19,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:19,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:17:19,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:19,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:17:19,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:19,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:19,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76299644] [2020-10-12 20:17:19,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:19,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:17:19,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597140997] [2020-10-12 20:17:19,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:17:19,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:19,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:17:19,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:17:19,462 INFO L87 Difference]: Start difference. First operand 4636 states and 6467 transitions. Second operand 5 states. [2020-10-12 20:17:21,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:21,117 INFO L93 Difference]: Finished difference Result 7664 states and 10773 transitions. [2020-10-12 20:17:21,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:17:21,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-12 20:17:21,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:21,134 INFO L225 Difference]: With dead ends: 7664 [2020-10-12 20:17:21,134 INFO L226 Difference]: Without dead ends: 3570 [2020-10-12 20:17:21,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:17:21,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3570 states. [2020-10-12 20:17:21,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3570 to 3566. [2020-10-12 20:17:21,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3566 states. [2020-10-12 20:17:21,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3566 states to 3566 states and 4964 transitions. [2020-10-12 20:17:21,294 INFO L78 Accepts]: Start accepts. Automaton has 3566 states and 4964 transitions. Word has length 163 [2020-10-12 20:17:21,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:21,294 INFO L479 AbstractCegarLoop]: Abstraction has 3566 states and 4964 transitions. [2020-10-12 20:17:21,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:17:21,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3566 states and 4964 transitions. [2020-10-12 20:17:21,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-12 20:17:21,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:21,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:21,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:17:21,303 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:21,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:21,303 INFO L82 PathProgramCache]: Analyzing trace with hash -454219137, now seen corresponding path program 1 times [2020-10-12 20:17:21,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:21,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862551999] [2020-10-12 20:17:21,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:21,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:21,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:21,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:21,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:21,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:21,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:21,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:21,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:21,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:22,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:23,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:23,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:26,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:26,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 20:17:26,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:17:26,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 20:17:26,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:17:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:17:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 20:17:26,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:26,627 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:17:26,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:26,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:26,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:26,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:26,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:26,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 20:17:26,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:26,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:17:26,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:26,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:17:26,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:26,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:26,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862551999] [2020-10-12 20:17:26,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:26,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:17:26,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076449721] [2020-10-12 20:17:26,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:17:26,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:26,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:17:26,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:17:26,716 INFO L87 Difference]: Start difference. First operand 3566 states and 4964 transitions. Second operand 9 states. [2020-10-12 20:17:26,969 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:17:29,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:29,369 INFO L93 Difference]: Finished difference Result 10804 states and 15554 transitions. [2020-10-12 20:17:29,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 20:17:29,371 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2020-10-12 20:17:29,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:29,402 INFO L225 Difference]: With dead ends: 10804 [2020-10-12 20:17:29,402 INFO L226 Difference]: Without dead ends: 8140 [2020-10-12 20:17:29,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-10-12 20:17:29,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8140 states. [2020-10-12 20:17:29,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8140 to 5134. [2020-10-12 20:17:29,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5134 states. [2020-10-12 20:17:29,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5134 states to 5134 states and 7154 transitions. [2020-10-12 20:17:29,740 INFO L78 Accepts]: Start accepts. Automaton has 5134 states and 7154 transitions. Word has length 166 [2020-10-12 20:17:29,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:29,741 INFO L479 AbstractCegarLoop]: Abstraction has 5134 states and 7154 transitions. [2020-10-12 20:17:29,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:17:29,741 INFO L276 IsEmpty]: Start isEmpty. Operand 5134 states and 7154 transitions. [2020-10-12 20:17:29,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-12 20:17:29,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:29,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:29,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:17:29,751 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:29,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:29,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1864554239, now seen corresponding path program 1 times [2020-10-12 20:17:29,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:29,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905733597] [2020-10-12 20:17:29,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:29,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:29,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:29,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:29,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:29,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:29,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:30,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:30,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:30,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:30,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:30,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:32,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:33,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:33,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:34,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:34,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 20:17:34,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:17:34,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 20:17:34,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:34,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:17:34,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 20:17:34,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:17:34,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:35,029 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:17:35,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:35,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:35,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:35,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:35,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:35,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:35,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:17:35,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:35,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:17:35,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:35,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:17:35,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:35,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905733597] [2020-10-12 20:17:35,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:35,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:17:35,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887769240] [2020-10-12 20:17:35,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:17:35,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:35,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:17:35,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:17:35,088 INFO L87 Difference]: Start difference. First operand 5134 states and 7154 transitions. Second operand 5 states. [2020-10-12 20:17:36,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:36,534 INFO L93 Difference]: Finished difference Result 8517 states and 11926 transitions. [2020-10-12 20:17:36,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:17:36,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-12 20:17:36,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:36,548 INFO L225 Difference]: With dead ends: 8517 [2020-10-12 20:17:36,549 INFO L226 Difference]: Without dead ends: 3970 [2020-10-12 20:17:36,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:17:36,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3970 states. [2020-10-12 20:17:36,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3970 to 3964. [2020-10-12 20:17:36,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3964 states. [2020-10-12 20:17:36,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3964 states to 3964 states and 5505 transitions. [2020-10-12 20:17:36,745 INFO L78 Accepts]: Start accepts. Automaton has 3964 states and 5505 transitions. Word has length 166 [2020-10-12 20:17:36,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:36,746 INFO L479 AbstractCegarLoop]: Abstraction has 3964 states and 5505 transitions. [2020-10-12 20:17:36,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:17:36,746 INFO L276 IsEmpty]: Start isEmpty. Operand 3964 states and 5505 transitions. [2020-10-12 20:17:36,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-12 20:17:36,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:36,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:36,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:17:36,754 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:36,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:36,754 INFO L82 PathProgramCache]: Analyzing trace with hash 2104157072, now seen corresponding path program 1 times [2020-10-12 20:17:36,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:36,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264933050] [2020-10-12 20:17:36,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:36,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:36,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:36,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:36,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:36,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:36,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:36,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:37,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:38,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:39,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:39,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:39,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:39,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:39,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:41,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:41,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-12 20:17:41,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:17:41,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 20:17:41,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:41,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:17:41,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:17:41,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-12 20:17:41,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:42,022 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:17:42,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:42,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:42,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:42,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:42,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:42,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 20:17:42,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:42,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:17:42,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:42,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:17:42,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:42,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:42,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264933050] [2020-10-12 20:17:42,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:42,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:17:42,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721430192] [2020-10-12 20:17:42,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:17:42,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:42,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:17:42,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:17:42,099 INFO L87 Difference]: Start difference. First operand 3964 states and 5505 transitions. Second operand 5 states. [2020-10-12 20:17:44,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:44,560 INFO L93 Difference]: Finished difference Result 10001 states and 13895 transitions. [2020-10-12 20:17:44,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:17:44,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-12 20:17:44,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:44,585 INFO L225 Difference]: With dead ends: 10001 [2020-10-12 20:17:44,585 INFO L226 Difference]: Without dead ends: 6407 [2020-10-12 20:17:44,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:17:44,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6407 states. [2020-10-12 20:17:44,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6407 to 6402. [2020-10-12 20:17:44,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6402 states. [2020-10-12 20:17:44,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6402 states to 6402 states and 8761 transitions. [2020-10-12 20:17:44,917 INFO L78 Accepts]: Start accepts. Automaton has 6402 states and 8761 transitions. Word has length 169 [2020-10-12 20:17:44,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:44,918 INFO L479 AbstractCegarLoop]: Abstraction has 6402 states and 8761 transitions. [2020-10-12 20:17:44,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:17:44,918 INFO L276 IsEmpty]: Start isEmpty. Operand 6402 states and 8761 transitions. [2020-10-12 20:17:44,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 20:17:44,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:44,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:44,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:17:44,928 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:44,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:44,929 INFO L82 PathProgramCache]: Analyzing trace with hash 408231906, now seen corresponding path program 1 times [2020-10-12 20:17:44,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:44,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652261853] [2020-10-12 20:17:44,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:44,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:44,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:45,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:45,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:45,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:45,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:45,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:45,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:45,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:47,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:47,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:47,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:47,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:48,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:49,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:49,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 20:17:49,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:17:49,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 20:17:49,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:49,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:17:49,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:17:49,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 20:17:49,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:50,215 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:17:50,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:50,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:50,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:50,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:50,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:50,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:17:50,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:50,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:17:50,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:50,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:17:50,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:50,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:50,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652261853] [2020-10-12 20:17:50,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:50,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:17:50,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148424740] [2020-10-12 20:17:50,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:17:50,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:50,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:17:50,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:17:50,264 INFO L87 Difference]: Start difference. First operand 6402 states and 8761 transitions. Second operand 5 states. [2020-10-12 20:17:50,494 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-12 20:17:53,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:53,403 INFO L93 Difference]: Finished difference Result 11471 states and 15696 transitions. [2020-10-12 20:17:53,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:17:53,404 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-12 20:17:53,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:53,418 INFO L225 Difference]: With dead ends: 11471 [2020-10-12 20:17:53,418 INFO L226 Difference]: Without dead ends: 6475 [2020-10-12 20:17:53,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:17:53,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6475 states. [2020-10-12 20:17:53,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6475 to 6430. [2020-10-12 20:17:53,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6430 states. [2020-10-12 20:17:53,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6430 states to 6430 states and 8765 transitions. [2020-10-12 20:17:53,830 INFO L78 Accepts]: Start accepts. Automaton has 6430 states and 8765 transitions. Word has length 170 [2020-10-12 20:17:53,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:53,830 INFO L479 AbstractCegarLoop]: Abstraction has 6430 states and 8765 transitions. [2020-10-12 20:17:53,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:17:53,830 INFO L276 IsEmpty]: Start isEmpty. Operand 6430 states and 8765 transitions. [2020-10-12 20:17:53,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-12 20:17:53,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:53,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:53,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:17:53,840 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:53,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:53,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1955072786, now seen corresponding path program 1 times [2020-10-12 20:17:53,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:53,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598840630] [2020-10-12 20:17:53,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:53,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:53,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:53,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:53,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:53,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:54,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:54,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:54,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:54,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:54,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:57,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:57,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:58,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:58,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 20:17:58,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:17:58,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 20:17:58,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:58,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:17:58,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:17:58,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 20:17:58,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:59,125 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:17:59,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:59,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:59,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:59,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:59,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:59,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:17:59,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:59,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:17:59,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:59,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:17:59,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:59,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:59,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598840630] [2020-10-12 20:17:59,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:59,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:17:59,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135554524] [2020-10-12 20:17:59,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:17:59,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:59,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:17:59,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:17:59,194 INFO L87 Difference]: Start difference. First operand 6430 states and 8765 transitions. Second operand 5 states. [2020-10-12 20:18:02,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:18:02,118 INFO L93 Difference]: Finished difference Result 17342 states and 23561 transitions. [2020-10-12 20:18:02,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:18:02,119 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-12 20:18:02,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:18:02,147 INFO L225 Difference]: With dead ends: 17342 [2020-10-12 20:18:02,147 INFO L226 Difference]: Without dead ends: 10999 [2020-10-12 20:18:02,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:18:02,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10999 states. [2020-10-12 20:18:02,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10999 to 10993. [2020-10-12 20:18:02,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10993 states. [2020-10-12 20:18:02,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10993 states to 10993 states and 14764 transitions. [2020-10-12 20:18:02,936 INFO L78 Accepts]: Start accepts. Automaton has 10993 states and 14764 transitions. Word has length 171 [2020-10-12 20:18:02,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:18:02,936 INFO L479 AbstractCegarLoop]: Abstraction has 10993 states and 14764 transitions. [2020-10-12 20:18:02,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:18:02,937 INFO L276 IsEmpty]: Start isEmpty. Operand 10993 states and 14764 transitions. [2020-10-12 20:18:02,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-12 20:18:02,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:18:02,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:18:02,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:18:02,948 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:18:02,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:18:02,948 INFO L82 PathProgramCache]: Analyzing trace with hash -906854015, now seen corresponding path program 1 times [2020-10-12 20:18:02,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:18:02,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36077084] [2020-10-12 20:18:02,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:18:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:02,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:03,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:03,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:03,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:03,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:03,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:03,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:03,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:03,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:07,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:07,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:07,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 20:18:07,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:18:07,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 20:18:07,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:07,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:18:07,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:18:07,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 20:18:07,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:08,249 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:18:08,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:18:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:08,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:08,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:08,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:18:08,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:18:08,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:18:08,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:08,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:18:08,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:18:08,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:18:08,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:08,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:18:08,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36077084] [2020-10-12 20:18:08,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:18:08,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:18:08,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656196940] [2020-10-12 20:18:08,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:18:08,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:18:08,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:18:08,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:18:08,296 INFO L87 Difference]: Start difference. First operand 10993 states and 14764 transitions. Second operand 5 states. [2020-10-12 20:18:08,521 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-12 20:18:11,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:18:11,859 INFO L93 Difference]: Finished difference Result 20263 states and 27278 transitions. [2020-10-12 20:18:11,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:18:11,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-12 20:18:11,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:18:11,876 INFO L225 Difference]: With dead ends: 20263 [2020-10-12 20:18:11,876 INFO L226 Difference]: Without dead ends: 10995 [2020-10-12 20:18:11,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:18:11,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10995 states. [2020-10-12 20:18:12,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10995 to 10987. [2020-10-12 20:18:12,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10987 states. [2020-10-12 20:18:12,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10987 states to 10987 states and 14720 transitions. [2020-10-12 20:18:12,639 INFO L78 Accepts]: Start accepts. Automaton has 10987 states and 14720 transitions. Word has length 172 [2020-10-12 20:18:12,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:18:12,639 INFO L479 AbstractCegarLoop]: Abstraction has 10987 states and 14720 transitions. [2020-10-12 20:18:12,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:18:12,639 INFO L276 IsEmpty]: Start isEmpty. Operand 10987 states and 14720 transitions. [2020-10-12 20:18:12,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-12 20:18:12,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:18:12,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:18:12,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:18:12,648 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:18:12,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:18:12,649 INFO L82 PathProgramCache]: Analyzing trace with hash -674276271, now seen corresponding path program 1 times [2020-10-12 20:18:12,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:18:12,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631943717] [2020-10-12 20:18:12,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:18:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:12,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:12,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:12,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:12,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:12,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:12,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:17,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:17,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-12 20:18:17,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:18:17,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 20:18:17,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:17,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:18:17,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-12 20:18:17,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 20:18:17,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:17,947 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:18:17,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:18:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:17,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:17,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:17,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:18:17,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:18:17,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:18:17,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:17,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:18:17,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:18:17,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:18:17,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:17,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:18:17,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631943717] [2020-10-12 20:18:17,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:18:17,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:18:17,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233847669] [2020-10-12 20:18:17,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:18:17,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:18:17,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:18:17,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:18:17,983 INFO L87 Difference]: Start difference. First operand 10987 states and 14720 transitions. Second operand 5 states. [2020-10-12 20:18:19,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:18:19,799 INFO L93 Difference]: Finished difference Result 18219 states and 24553 transitions. [2020-10-12 20:18:19,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:18:19,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-12 20:18:19,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:18:19,814 INFO L225 Difference]: With dead ends: 18219 [2020-10-12 20:18:19,814 INFO L226 Difference]: Without dead ends: 9220 [2020-10-12 20:18:19,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:18:19,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9220 states. [2020-10-12 20:18:20,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9220 to 9205. [2020-10-12 20:18:20,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9205 states. [2020-10-12 20:18:20,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9205 states to 9205 states and 12293 transitions. [2020-10-12 20:18:20,445 INFO L78 Accepts]: Start accepts. Automaton has 9205 states and 12293 transitions. Word has length 173 [2020-10-12 20:18:20,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:18:20,445 INFO L479 AbstractCegarLoop]: Abstraction has 9205 states and 12293 transitions. [2020-10-12 20:18:20,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:18:20,445 INFO L276 IsEmpty]: Start isEmpty. Operand 9205 states and 12293 transitions. [2020-10-12 20:18:20,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-12 20:18:20,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:18:20,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:18:20,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:18:20,454 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:18:20,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:18:20,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1369458324, now seen corresponding path program 1 times [2020-10-12 20:18:20,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:18:20,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527222793] [2020-10-12 20:18:20,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:18:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:20,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:20,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:20,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:20,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:20,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:21,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:21,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:25,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:25,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-12 20:18:25,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:18:25,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 20:18:25,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:18:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-12 20:18:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 20:18:25,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:25,798 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:18:25,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:18:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:25,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:25,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:25,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:18:25,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:18:25,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:18:25,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:25,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:18:25,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:18:25,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:18:25,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:25,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:18:25,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527222793] [2020-10-12 20:18:25,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:18:25,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:18:25,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112917053] [2020-10-12 20:18:25,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:18:25,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:18:25,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:18:25,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:18:25,838 INFO L87 Difference]: Start difference. First operand 9205 states and 12293 transitions. Second operand 10 states. [2020-10-12 20:18:26,112 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-12 20:18:30,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:18:30,678 INFO L93 Difference]: Finished difference Result 38103 states and 52516 transitions. [2020-10-12 20:18:30,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 20:18:30,679 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 175 [2020-10-12 20:18:30,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:18:30,724 INFO L225 Difference]: With dead ends: 38103 [2020-10-12 20:18:30,724 INFO L226 Difference]: Without dead ends: 32417 [2020-10-12 20:18:30,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2020-10-12 20:18:30,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32417 states. [2020-10-12 20:18:31,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32417 to 18735. [2020-10-12 20:18:31,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18735 states. [2020-10-12 20:18:31,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18735 states to 18735 states and 25513 transitions. [2020-10-12 20:18:31,844 INFO L78 Accepts]: Start accepts. Automaton has 18735 states and 25513 transitions. Word has length 175 [2020-10-12 20:18:31,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:18:31,844 INFO L479 AbstractCegarLoop]: Abstraction has 18735 states and 25513 transitions. [2020-10-12 20:18:31,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:18:31,844 INFO L276 IsEmpty]: Start isEmpty. Operand 18735 states and 25513 transitions. [2020-10-12 20:18:31,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-12 20:18:31,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:18:31,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:18:31,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:18:31,859 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:18:31,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:18:31,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1009655074, now seen corresponding path program 1 times [2020-10-12 20:18:31,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:18:31,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135300097] [2020-10-12 20:18:31,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:18:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:31,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:31,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:31,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:32,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:32,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:33,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:33,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:34,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:34,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:34,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:34,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:34,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:34,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:34,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:34,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:34,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:35,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:35,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:35,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:35,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:36,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:36,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:36,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:36,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:36,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:36,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:36,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:36,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-12 20:18:36,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-12 20:18:36,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 20:18:36,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:36,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:18:36,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-12 20:18:36,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-12 20:18:36,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:37,280 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:18:37,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:18:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:37,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:37,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:37,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:18:37,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:18:37,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:18:37,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:37,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:18:37,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:18:37,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:18:37,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:37,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:18:37,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135300097] [2020-10-12 20:18:37,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:18:37,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:18:37,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470270421] [2020-10-12 20:18:37,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:18:37,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:18:37,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:18:37,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:18:37,349 INFO L87 Difference]: Start difference. First operand 18735 states and 25513 transitions. Second operand 9 states. [2020-10-12 20:18:37,639 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 20:18:51,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:18:51,225 INFO L93 Difference]: Finished difference Result 143446 states and 216576 transitions. [2020-10-12 20:18:51,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 20:18:51,226 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 175 [2020-10-12 20:18:51,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:18:51,414 INFO L225 Difference]: With dead ends: 143446 [2020-10-12 20:18:51,415 INFO L226 Difference]: Without dead ends: 135304 [2020-10-12 20:18:51,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=191, Invalid=459, Unknown=0, NotChecked=0, Total=650 [2020-10-12 20:18:51,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135304 states. [2020-10-12 20:18:56,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135304 to 35452. [2020-10-12 20:18:56,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35452 states. [2020-10-12 20:18:56,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35452 states to 35452 states and 50368 transitions. [2020-10-12 20:18:56,986 INFO L78 Accepts]: Start accepts. Automaton has 35452 states and 50368 transitions. Word has length 175 [2020-10-12 20:18:56,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:18:56,987 INFO L479 AbstractCegarLoop]: Abstraction has 35452 states and 50368 transitions. [2020-10-12 20:18:56,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:18:56,987 INFO L276 IsEmpty]: Start isEmpty. Operand 35452 states and 50368 transitions. [2020-10-12 20:18:57,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-12 20:18:57,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:18:57,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:18:57,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:18:57,003 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:18:57,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:18:57,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1487614043, now seen corresponding path program 1 times [2020-10-12 20:18:57,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:18:57,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074890188] [2020-10-12 20:18:57,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:18:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:57,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:57,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:57,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:57,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:57,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:58,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:58,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:59,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:59,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:59,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:02,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:02,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-12 20:19:02,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:19:02,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 20:19:02,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:02,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:19:02,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 20:19:02,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-12 20:19:02,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:02,308 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:19:02,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:19:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:02,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:02,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:02,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:19:02,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:19:02,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:19:02,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:02,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:19:02,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:19:02,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:19:02,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:02,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:19:02,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074890188] [2020-10-12 20:19:02,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:19:02,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:19:02,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790974308] [2020-10-12 20:19:02,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:19:02,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:19:02,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:19:02,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:19:02,364 INFO L87 Difference]: Start difference. First operand 35452 states and 50368 transitions. Second operand 6 states. [2020-10-12 20:19:02,610 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-12 20:19:09,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:19:09,463 INFO L93 Difference]: Finished difference Result 69529 states and 102146 transitions. [2020-10-12 20:19:09,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:19:09,463 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2020-10-12 20:19:09,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:19:09,528 INFO L225 Difference]: With dead ends: 69529 [2020-10-12 20:19:09,529 INFO L226 Difference]: Without dead ends: 54615 [2020-10-12 20:19:09,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:19:09,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54615 states. [2020-10-12 20:19:15,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54615 to 53149. [2020-10-12 20:19:15,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53149 states. [2020-10-12 20:19:16,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53149 states to 53149 states and 77505 transitions. [2020-10-12 20:19:16,022 INFO L78 Accepts]: Start accepts. Automaton has 53149 states and 77505 transitions. Word has length 175 [2020-10-12 20:19:16,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:19:16,022 INFO L479 AbstractCegarLoop]: Abstraction has 53149 states and 77505 transitions. [2020-10-12 20:19:16,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:19:16,022 INFO L276 IsEmpty]: Start isEmpty. Operand 53149 states and 77505 transitions. [2020-10-12 20:19:16,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-12 20:19:16,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:19:16,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:19:16,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:19:16,033 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:19:16,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:19:16,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1289760856, now seen corresponding path program 1 times [2020-10-12 20:19:16,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:19:16,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026464209] [2020-10-12 20:19:16,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:19:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:16,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:16,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:16,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:16,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:16,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:19,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:19,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-12 20:19:19,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:19:19,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3124 [2020-10-12 20:19:19,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:19,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:19:19,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 20:19:19,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:19:19,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:19,418 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:19:19,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:19:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:19,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:19,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:19,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:19:19,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:19:19,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:19:19,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:19,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:19:19,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:19:19,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:19:19,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:19,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:19:19,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026464209] [2020-10-12 20:19:19,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:19:19,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:19:19,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622137716] [2020-10-12 20:19:19,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:19:19,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:19:19,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:19:19,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:19:19,458 INFO L87 Difference]: Start difference. First operand 53149 states and 77505 transitions. Second operand 5 states. [2020-10-12 20:19:24,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:19:24,619 INFO L93 Difference]: Finished difference Result 96750 states and 140969 transitions. [2020-10-12 20:19:24,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:19:24,620 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-10-12 20:19:24,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:19:24,672 INFO L225 Difference]: With dead ends: 96750 [2020-10-12 20:19:24,672 INFO L226 Difference]: Without dead ends: 43772 [2020-10-12 20:19:24,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:19:24,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43772 states. [2020-10-12 20:19:28,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43772 to 43772. [2020-10-12 20:19:28,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43772 states. [2020-10-12 20:19:28,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43772 states to 43772 states and 63652 transitions. [2020-10-12 20:19:28,743 INFO L78 Accepts]: Start accepts. Automaton has 43772 states and 63652 transitions. Word has length 175 [2020-10-12 20:19:28,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:19:28,743 INFO L479 AbstractCegarLoop]: Abstraction has 43772 states and 63652 transitions. [2020-10-12 20:19:28,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:19:28,744 INFO L276 IsEmpty]: Start isEmpty. Operand 43772 states and 63652 transitions. [2020-10-12 20:19:28,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-12 20:19:28,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:19:28,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:19:28,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:19:28,752 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:19:28,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:19:28,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1338128667, now seen corresponding path program 1 times [2020-10-12 20:19:28,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:19:28,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417428889] [2020-10-12 20:19:28,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:19:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:28,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:28,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:28,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:28,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:29,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:33,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:33,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:33,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:33,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-12 20:19:33,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:19:33,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 20:19:33,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:33,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:19:33,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:19:33,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 20:19:33,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:34,087 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:19:34,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:19:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:34,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:34,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:34,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:19:34,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:19:34,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:19:34,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:19:34,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:19:34,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:19:34,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:34,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:19:34,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417428889] [2020-10-12 20:19:34,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:19:34,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:19:34,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853374292] [2020-10-12 20:19:34,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:19:34,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:19:34,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:19:34,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:19:34,149 INFO L87 Difference]: Start difference. First operand 43772 states and 63652 transitions. Second operand 9 states. [2020-10-12 20:19:34,409 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:19:47,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:19:47,501 INFO L93 Difference]: Finished difference Result 142571 states and 207566 transitions. [2020-10-12 20:19:47,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 20:19:47,501 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2020-10-12 20:19:47,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:19:47,669 INFO L225 Difference]: With dead ends: 142571 [2020-10-12 20:19:47,669 INFO L226 Difference]: Without dead ends: 105973 [2020-10-12 20:19:47,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-12 20:19:47,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105973 states. [2020-10-12 20:19:56,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105973 to 75502. [2020-10-12 20:19:56,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75502 states. [2020-10-12 20:19:56,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75502 states to 75502 states and 108773 transitions. [2020-10-12 20:19:56,642 INFO L78 Accepts]: Start accepts. Automaton has 75502 states and 108773 transitions. Word has length 177 [2020-10-12 20:19:56,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:19:56,643 INFO L479 AbstractCegarLoop]: Abstraction has 75502 states and 108773 transitions. [2020-10-12 20:19:56,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:19:56,643 INFO L276 IsEmpty]: Start isEmpty. Operand 75502 states and 108773 transitions. [2020-10-12 20:19:56,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-12 20:19:56,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:19:56,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:19:56,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:19:56,654 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:19:56,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:19:56,654 INFO L82 PathProgramCache]: Analyzing trace with hash -161096943, now seen corresponding path program 1 times [2020-10-12 20:19:56,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:19:56,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514363288] [2020-10-12 20:19:56,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:19:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:56,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:56,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:56,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:57,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:57,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-12 20:19:57,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:19:57,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 653 [2020-10-12 20:19:57,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:57,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:19:57,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-12 20:19:57,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:19:57,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:57,549 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:19:57,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:19:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:57,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:57,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:57,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:19:57,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:19:57,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:19:57,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:57,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:19:57,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:19:57,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:19:57,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:57,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:19:57,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514363288] [2020-10-12 20:19:57,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:19:57,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:19:57,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379080620] [2020-10-12 20:19:57,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:19:57,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:19:57,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:19:57,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:19:57,584 INFO L87 Difference]: Start difference. First operand 75502 states and 108773 transitions. Second operand 4 states. [2020-10-12 20:20:11,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:11,654 INFO L93 Difference]: Finished difference Result 181421 states and 264185 transitions. [2020-10-12 20:20:11,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:20:11,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2020-10-12 20:20:11,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:11,817 INFO L225 Difference]: With dead ends: 181421 [2020-10-12 20:20:11,817 INFO L226 Difference]: Without dead ends: 107667 [2020-10-12 20:20:11,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:20:11,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107667 states.