/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.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:25:48,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:25:48,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:25:48,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:25:48,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:25:48,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:25:49,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:25:49,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:25:49,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:25:49,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:25:49,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:25:49,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:25:49,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:25:49,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:25:49,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:25:49,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:25:49,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:25:49,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:25:49,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:25:49,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:25:49,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:25:49,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:25:49,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:25:49,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:25:49,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:25:49,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:25:49,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:25:49,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:25:49,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:25:49,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:25:49,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:25:49,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:25:49,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:25:49,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:25:49,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:25:49,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:25:49,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:25:49,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:25:49,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:25:49,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:25:49,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:25:49,071 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 20:25:49,093 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:25:49,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:25:49,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:25:49,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:25:49,094 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:25:49,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:25:49,095 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:25:49,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:25:49,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:25:49,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:25:49,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:25:49,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:25:49,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:25:49,096 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:25:49,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:25:49,097 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:25:49,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:25:49,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:25:49,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:25:49,097 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:25:49,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:25:49,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:25:49,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:25:49,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:25:49,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:25:49,099 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:25:49,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:25:49,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:25:49,099 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:25:49,099 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 20:25:49,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:25:49,423 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:25:49,427 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:25:49,429 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:25:49,429 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:25:49,430 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 20:25:49,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dbae3d0c/65495ae681a447cf8d2d0d99b38d3374/FLAG90cd99c67 [2020-10-12 20:25:50,019 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:25:50,020 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 20:25:50,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dbae3d0c/65495ae681a447cf8d2d0d99b38d3374/FLAG90cd99c67 [2020-10-12 20:25:50,288 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dbae3d0c/65495ae681a447cf8d2d0d99b38d3374 [2020-10-12 20:25:50,295 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:25:50,297 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:25:50,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:25:50,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:25:50,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:25:50,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:25:50" (1/1) ... [2020-10-12 20:25:50,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e60d8c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:25:50, skipping insertion in model container [2020-10-12 20:25:50,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:25:50" (1/1) ... [2020-10-12 20:25:50,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:25:50,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:25:50,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:25:50,906 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:25:51,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:25:51,175 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:25:51,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:25:51 WrapperNode [2020-10-12 20:25:51,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:25:51,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:25:51,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:25:51,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:25:51,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:25:51" (1/1) ... [2020-10-12 20:25:51,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:25:51" (1/1) ... [2020-10-12 20:25:51,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:25:51" (1/1) ... [2020-10-12 20:25:51,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:25:51" (1/1) ... [2020-10-12 20:25:51,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:25:51" (1/1) ... [2020-10-12 20:25:51,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:25:51" (1/1) ... [2020-10-12 20:25:51,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:25:51" (1/1) ... [2020-10-12 20:25:51,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:25:51,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:25:51,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:25:51,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:25:51,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:25:51" (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 20:25:51,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:25:51,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:25:51,409 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:25:51,409 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:25:51,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:25:51,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:25:51,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 20:25:51,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:25:51,411 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:25:51,411 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:25:51,411 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:25:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:25:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:25:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:25:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:25:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:25:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:25:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:25:51,414 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:25:51,414 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:25:51,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:25:51,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:25:52,856 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:25:52,856 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:25:52,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:25:52 BoogieIcfgContainer [2020-10-12 20:25:52,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:25:52,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:25:52,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:25:52,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:25:52,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:25:50" (1/3) ... [2020-10-12 20:25:52,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61fd3a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:25:52, skipping insertion in model container [2020-10-12 20:25:52,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:25:51" (2/3) ... [2020-10-12 20:25:52,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61fd3a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:25:52, skipping insertion in model container [2020-10-12 20:25:52,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:25:52" (3/3) ... [2020-10-12 20:25:52,872 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 20:25:52,883 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:25:52,891 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:25:52,905 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:25:52,933 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:25:52,933 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:25:52,933 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:25:52,933 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:25:52,933 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:25:52,934 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:25:52,934 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:25:52,934 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:25:52,963 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states. [2020-10-12 20:25:52,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:25:52,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:25:52,980 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] [2020-10-12 20:25:52,981 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:25:52,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:25:52,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1373065631, now seen corresponding path program 1 times [2020-10-12 20:25:52,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:25:52,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762411051] [2020-10-12 20:25:52,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:25:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:53,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:53,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:54,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:54,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:55,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:58,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:58,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 20:25:58,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:25:58,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-12 20:25:58,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:58,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:25:58,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:25:58,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:25:58,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:25:59,234 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:25:59,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:25:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:59,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:59,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:59,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:25:59,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:25:59,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 20:25:59,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:59,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:25:59,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:25:59,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:25:59,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:25:59,317 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 20:25:59,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762411051] [2020-10-12 20:25:59,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:25:59,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 20:25:59,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552333283] [2020-10-12 20:25:59,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 20:25:59,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:25:59,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 20:25:59,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:25:59,344 INFO L87 Difference]: Start difference. First operand 355 states. Second operand 7 states. [2020-10-12 20:26:00,063 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification that was a NOOP. DAG size: 267 [2020-10-12 20:26:02,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:26:02,786 INFO L93 Difference]: Finished difference Result 1607 states and 2722 transitions. [2020-10-12 20:26:02,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:26:02,788 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-12 20:26:02,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:26:02,824 INFO L225 Difference]: With dead ends: 1607 [2020-10-12 20:26:02,824 INFO L226 Difference]: Without dead ends: 1429 [2020-10-12 20:26:02,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:26:02,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2020-10-12 20:26:02,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 503. [2020-10-12 20:26:02,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2020-10-12 20:26:02,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 832 transitions. [2020-10-12 20:26:02,954 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 832 transitions. Word has length 122 [2020-10-12 20:26:02,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:26:02,956 INFO L479 AbstractCegarLoop]: Abstraction has 503 states and 832 transitions. [2020-10-12 20:26:02,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 20:26:02,956 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 832 transitions. [2020-10-12 20:26:02,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:26:02,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:26:02,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:26:02,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:26:02,968 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:26:02,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:26:02,969 INFO L82 PathProgramCache]: Analyzing trace with hash -450806657, now seen corresponding path program 1 times [2020-10-12 20:26:02,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:26:02,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134837803] [2020-10-12 20:26:02,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:26:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:03,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:03,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:03,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:03,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:04,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:04,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:08,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:08,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 20:26:08,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:26:08,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 20:26:08,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:08,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:26:08,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 20:26:08,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:26:08,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:26:08,648 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:26:08,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:26:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:08,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:08,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:08,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:26:08,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:26:08,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:26:08,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:08,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:26:08,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:26:08,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:26:08,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:08,730 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 20:26:08,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134837803] [2020-10-12 20:26:08,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:26:08,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:26:08,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478271618] [2020-10-12 20:26:08,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:26:08,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:26:08,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:26:08,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:26:08,734 INFO L87 Difference]: Start difference. First operand 503 states and 832 transitions. Second operand 8 states. [2020-10-12 20:26:09,296 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-12 20:26:12,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:26:12,805 INFO L93 Difference]: Finished difference Result 3755 states and 6273 transitions. [2020-10-12 20:26:12,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 20:26:12,806 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-10-12 20:26:12,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:26:12,832 INFO L225 Difference]: With dead ends: 3755 [2020-10-12 20:26:12,832 INFO L226 Difference]: Without dead ends: 3449 [2020-10-12 20:26:12,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 20:26:12,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3449 states. [2020-10-12 20:26:12,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3449 to 1340. [2020-10-12 20:26:12,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2020-10-12 20:26:12,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 2233 transitions. [2020-10-12 20:26:12,969 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 2233 transitions. Word has length 123 [2020-10-12 20:26:12,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:26:12,971 INFO L479 AbstractCegarLoop]: Abstraction has 1340 states and 2233 transitions. [2020-10-12 20:26:12,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:26:12,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 2233 transitions. [2020-10-12 20:26:12,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 20:26:12,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:26:12,980 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] [2020-10-12 20:26:12,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:26:12,980 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:26:12,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:26:12,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1151714714, now seen corresponding path program 1 times [2020-10-12 20:26:12,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:26:12,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848335329] [2020-10-12 20:26:12,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:26:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:13,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:13,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:13,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:13,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:13,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:14,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:18,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:18,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:26:18,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:26:18,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 20:26:18,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:18,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:26:18,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:26:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:26:18,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:18,699 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:26:18,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:26:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:18,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:18,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:18,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:26:18,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:26:18,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 20:26:18,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:26:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:26:18,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:26:18,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:18,757 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 20:26:18,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848335329] [2020-10-12 20:26:18,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:26:18,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:26:18,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575175871] [2020-10-12 20:26:18,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:26:18,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:26:18,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:26:18,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:26:18,763 INFO L87 Difference]: Start difference. First operand 1340 states and 2233 transitions. Second operand 8 states. [2020-10-12 20:26:19,317 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-12 20:26:23,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:26:23,665 INFO L93 Difference]: Finished difference Result 10849 states and 18120 transitions. [2020-10-12 20:26:23,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 20:26:23,666 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 124 [2020-10-12 20:26:23,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:26:23,714 INFO L225 Difference]: With dead ends: 10849 [2020-10-12 20:26:23,715 INFO L226 Difference]: Without dead ends: 9820 [2020-10-12 20:26:23,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 20:26:23,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9820 states. [2020-10-12 20:26:24,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9820 to 3792. [2020-10-12 20:26:24,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3792 states. [2020-10-12 20:26:24,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 6323 transitions. [2020-10-12 20:26:24,018 INFO L78 Accepts]: Start accepts. Automaton has 3792 states and 6323 transitions. Word has length 124 [2020-10-12 20:26:24,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:26:24,019 INFO L479 AbstractCegarLoop]: Abstraction has 3792 states and 6323 transitions. [2020-10-12 20:26:24,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:26:24,019 INFO L276 IsEmpty]: Start isEmpty. Operand 3792 states and 6323 transitions. [2020-10-12 20:26:24,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 20:26:24,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:26:24,022 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] [2020-10-12 20:26:24,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:26:24,022 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:26:24,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:26:24,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1400469978, now seen corresponding path program 1 times [2020-10-12 20:26:24,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:26:24,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160333772] [2020-10-12 20:26:24,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:26:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:24,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:24,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:24,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:24,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:24,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:25,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:29,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:29,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 20:26:29,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:26:29,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 20:26:29,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:26:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:26:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 20:26:29,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:29,920 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:26:29,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:26:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:29,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:29,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:29,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:26:29,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:26:29,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 20:26:29,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:29,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:26:29,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:26:29,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:26:29,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:26:30,015 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 20:26:30,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160333772] [2020-10-12 20:26:30,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:26:30,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:26:30,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315335648] [2020-10-12 20:26:30,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:26:30,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:26:30,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:26:30,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:26:30,018 INFO L87 Difference]: Start difference. First operand 3792 states and 6323 transitions. Second operand 8 states. [2020-10-12 20:26:31,026 WARN L193 SmtUtils]: Spent 914.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-12 20:26:35,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:26:35,330 INFO L93 Difference]: Finished difference Result 30996 states and 51677 transitions. [2020-10-12 20:26:35,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 20:26:35,332 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 125 [2020-10-12 20:26:35,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:26:35,438 INFO L225 Difference]: With dead ends: 30996 [2020-10-12 20:26:35,439 INFO L226 Difference]: Without dead ends: 27645 [2020-10-12 20:26:35,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 20:26:35,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27645 states. [2020-10-12 20:26:36,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27645 to 10598. [2020-10-12 20:26:36,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10598 states. [2020-10-12 20:26:36,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10598 states to 10598 states and 17649 transitions. [2020-10-12 20:26:36,728 INFO L78 Accepts]: Start accepts. Automaton has 10598 states and 17649 transitions. Word has length 125 [2020-10-12 20:26:36,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:26:36,729 INFO L479 AbstractCegarLoop]: Abstraction has 10598 states and 17649 transitions. [2020-10-12 20:26:36,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:26:36,729 INFO L276 IsEmpty]: Start isEmpty. Operand 10598 states and 17649 transitions. [2020-10-12 20:26:36,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-12 20:26:36,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:26:36,732 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] [2020-10-12 20:26:36,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:26:36,733 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:26:36,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:26:36,733 INFO L82 PathProgramCache]: Analyzing trace with hash -517390547, now seen corresponding path program 1 times [2020-10-12 20:26:36,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:26:36,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778086577] [2020-10-12 20:26:36,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:26:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:36,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:36,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:36,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:37,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:37,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:37,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:41,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:41,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 20:26:41,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:26:41,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 20:26:41,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:41,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:26:41,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:26:41,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 20:26:41,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:42,322 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:26:42,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:26:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:42,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:42,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:42,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:26:42,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:26:42,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:26:42,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:42,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:26:42,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:26:42,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:26:42,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:42,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:26:42,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778086577] [2020-10-12 20:26:42,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:26:42,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:26:42,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024184188] [2020-10-12 20:26:42,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:26:42,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:26:42,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:26:42,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:26:42,381 INFO L87 Difference]: Start difference. First operand 10598 states and 17649 transitions. Second operand 8 states. [2020-10-12 20:26:42,941 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-12 20:26:49,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:26:49,885 INFO L93 Difference]: Finished difference Result 89922 states and 149633 transitions. [2020-10-12 20:26:49,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 20:26:49,886 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 126 [2020-10-12 20:26:49,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:26:50,146 INFO L225 Difference]: With dead ends: 89922 [2020-10-12 20:26:50,146 INFO L226 Difference]: Without dead ends: 79855 [2020-10-12 20:26:50,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 20:26:50,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79855 states. [2020-10-12 20:26:53,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79855 to 29580. [2020-10-12 20:26:53,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29580 states. [2020-10-12 20:26:53,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29580 states to 29580 states and 49177 transitions. [2020-10-12 20:26:53,697 INFO L78 Accepts]: Start accepts. Automaton has 29580 states and 49177 transitions. Word has length 126 [2020-10-12 20:26:53,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:26:53,698 INFO L479 AbstractCegarLoop]: Abstraction has 29580 states and 49177 transitions. [2020-10-12 20:26:53,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:26:53,698 INFO L276 IsEmpty]: Start isEmpty. Operand 29580 states and 49177 transitions. [2020-10-12 20:26:53,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 20:26:53,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:26:53,700 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] [2020-10-12 20:26:53,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:26:53,700 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:26:53,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:26:53,700 INFO L82 PathProgramCache]: Analyzing trace with hash -485737635, now seen corresponding path program 1 times [2020-10-12 20:26:53,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:26:53,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984625857] [2020-10-12 20:26:53,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:26:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:53,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:53,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:53,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:54,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:54,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:56,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:56,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 20:26:56,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:26:56,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3172 [2020-10-12 20:26:56,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:56,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:26:56,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:26:56,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 20:26:56,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:57,473 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:26:57,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:26:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:57,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:57,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:57,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:26:57,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:26:57,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:26:57,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:57,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:26:57,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:26:57,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:26:57,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:57,535 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 20:26:57,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984625857] [2020-10-12 20:26:57,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:26:57,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 20:26:57,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399363420] [2020-10-12 20:26:57,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 20:26:57,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:26:57,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 20:26:57,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:26:57,538 INFO L87 Difference]: Start difference. First operand 29580 states and 49177 transitions. Second operand 7 states. [2020-10-12 20:26:58,115 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-12 20:27:06,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:27:06,219 INFO L93 Difference]: Finished difference Result 135706 states and 225579 transitions. [2020-10-12 20:27:06,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:27:06,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-10-12 20:27:06,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:27:06,455 INFO L225 Difference]: With dead ends: 135706 [2020-10-12 20:27:06,455 INFO L226 Difference]: Without dead ends: 106658 [2020-10-12 20:27:06,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:27:06,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106658 states. [2020-10-12 20:27:10,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106658 to 29580. [2020-10-12 20:27:10,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29580 states. [2020-10-12 20:27:10,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29580 states to 29580 states and 49161 transitions. [2020-10-12 20:27:10,287 INFO L78 Accepts]: Start accepts. Automaton has 29580 states and 49161 transitions. Word has length 128 [2020-10-12 20:27:10,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:27:10,287 INFO L479 AbstractCegarLoop]: Abstraction has 29580 states and 49161 transitions. [2020-10-12 20:27:10,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 20:27:10,287 INFO L276 IsEmpty]: Start isEmpty. Operand 29580 states and 49161 transitions. [2020-10-12 20:27:10,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-12 20:27:10,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:27:10,291 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] [2020-10-12 20:27:10,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:27:10,291 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:27:10,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:27:10,292 INFO L82 PathProgramCache]: Analyzing trace with hash -2081609146, now seen corresponding path program 1 times [2020-10-12 20:27:10,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:27:10,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568539856] [2020-10-12 20:27:10,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:27:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:10,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:10,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:10,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:10,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:10,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:11,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:11,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:15,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:15,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 20:27:15,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:27:15,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 20:27:15,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:15,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:27:15,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-12 20:27:15,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 20:27:15,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:27:15,834 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:27:15,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:27:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:15,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:15,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:15,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:27:15,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:27:15,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:27:15,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:15,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:27:15,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:27:15,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:27:15,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:27:15,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:27:15,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568539856] [2020-10-12 20:27:15,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:27:15,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:27:15,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181402830] [2020-10-12 20:27:15,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:27:15,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:27:15,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:27:15,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:27:15,874 INFO L87 Difference]: Start difference. First operand 29580 states and 49161 transitions. Second operand 5 states. [2020-10-12 20:27:21,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:27:21,728 INFO L93 Difference]: Finished difference Result 83678 states and 138856 transitions. [2020-10-12 20:27:21,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:27:21,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-12 20:27:21,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:27:21,829 INFO L225 Difference]: With dead ends: 83678 [2020-10-12 20:27:21,829 INFO L226 Difference]: Without dead ends: 54485 [2020-10-12 20:27:21,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:27:21,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54485 states. [2020-10-12 20:27:26,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54485 to 54095. [2020-10-12 20:27:26,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54095 states. [2020-10-12 20:27:26,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54095 states to 54095 states and 89295 transitions. [2020-10-12 20:27:26,904 INFO L78 Accepts]: Start accepts. Automaton has 54095 states and 89295 transitions. Word has length 129 [2020-10-12 20:27:26,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:27:26,905 INFO L479 AbstractCegarLoop]: Abstraction has 54095 states and 89295 transitions. [2020-10-12 20:27:26,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:27:26,905 INFO L276 IsEmpty]: Start isEmpty. Operand 54095 states and 89295 transitions. [2020-10-12 20:27:26,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-12 20:27:26,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:27:26,908 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] [2020-10-12 20:27:26,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:27:26,909 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:27:26,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:27:26,909 INFO L82 PathProgramCache]: Analyzing trace with hash 2125402623, now seen corresponding path program 1 times [2020-10-12 20:27:26,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:27:26,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094280267] [2020-10-12 20:27:26,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:27:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:26,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:27,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:27,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:27,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:27,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:27,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:31,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:31,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:31,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:31,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:31,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 20:27:31,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:27:31,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:27:31,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:31,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:27:31,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 20:27:31,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 20:27:31,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:27:32,458 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:27:32,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:27:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:32,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:32,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:32,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:27:32,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:27:32,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:27:32,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:32,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:27:32,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:27:32,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:27:32,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:27:32,504 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 20:27:32,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094280267] [2020-10-12 20:27:32,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:27:32,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 20:27:32,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774682698] [2020-10-12 20:27:32,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 20:27:32,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:27:32,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 20:27:32,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:27:32,507 INFO L87 Difference]: Start difference. First operand 54095 states and 89295 transitions. Second operand 7 states. [2020-10-12 20:27:33,042 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-12 20:27:49,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:27:49,512 INFO L93 Difference]: Finished difference Result 263971 states and 435655 transitions. [2020-10-12 20:27:49,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:27:49,513 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-10-12 20:27:49,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:27:49,857 INFO L225 Difference]: With dead ends: 263971 [2020-10-12 20:27:49,857 INFO L226 Difference]: Without dead ends: 210575 [2020-10-12 20:27:49,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:27:50,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210575 states. [2020-10-12 20:28:00,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210575 to 103243. [2020-10-12 20:28:00,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103243 states. [2020-10-12 20:28:00,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103243 states to 103243 states and 170094 transitions. [2020-10-12 20:28:00,352 INFO L78 Accepts]: Start accepts. Automaton has 103243 states and 170094 transitions. Word has length 129 [2020-10-12 20:28:00,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:28:00,352 INFO L479 AbstractCegarLoop]: Abstraction has 103243 states and 170094 transitions. [2020-10-12 20:28:00,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 20:28:00,352 INFO L276 IsEmpty]: Start isEmpty. Operand 103243 states and 170094 transitions. [2020-10-12 20:28:00,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-12 20:28:00,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:28:00,356 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] [2020-10-12 20:28:00,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:28:00,357 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:28:00,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:28:00,357 INFO L82 PathProgramCache]: Analyzing trace with hash -263328309, now seen corresponding path program 1 times [2020-10-12 20:28:00,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:28:00,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990854951] [2020-10-12 20:28:00,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:28:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:00,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:00,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:00,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:00,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:00,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:00,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:03,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:03,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:03,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:06,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:06,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 20:28:06,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:28:06,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6144 [2020-10-12 20:28:06,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:06,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:28:06,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:28:06,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 20:28:06,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:28:07,209 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:28:07,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:28:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:07,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:07,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:07,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:28:07,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:28:07,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 20:28:07,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:07,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:28:07,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:28:07,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:28:07,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:28:07,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:28:07,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990854951] [2020-10-12 20:28:07,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:28:07,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 20:28:07,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965955256] [2020-10-12 20:28:07,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 20:28:07,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:28:07,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 20:28:07,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:28:07,271 INFO L87 Difference]: Start difference. First operand 103243 states and 170094 transitions. Second operand 7 states. [2020-10-12 20:28:07,802 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-12 20:28:30,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:28:30,355 INFO L93 Difference]: Finished difference Result 335858 states and 553143 transitions. [2020-10-12 20:28:30,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:28:30,356 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-10-12 20:28:30,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:28:30,768 INFO L225 Difference]: With dead ends: 335858 [2020-10-12 20:28:30,769 INFO L226 Difference]: Without dead ends: 276835 [2020-10-12 20:28:30,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:28:31,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276835 states. [2020-10-12 20:28:47,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276835 to 167773. [2020-10-12 20:28:47,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167773 states. [2020-10-12 20:28:47,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167773 states to 167773 states and 276246 transitions. [2020-10-12 20:28:47,483 INFO L78 Accepts]: Start accepts. Automaton has 167773 states and 276246 transitions. Word has length 129 [2020-10-12 20:28:47,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:28:47,483 INFO L479 AbstractCegarLoop]: Abstraction has 167773 states and 276246 transitions. [2020-10-12 20:28:47,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 20:28:47,483 INFO L276 IsEmpty]: Start isEmpty. Operand 167773 states and 276246 transitions. [2020-10-12 20:28:47,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-12 20:28:47,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:28:47,487 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] [2020-10-12 20:28:47,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:28:47,487 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:28:47,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:28:47,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1280258010, now seen corresponding path program 1 times [2020-10-12 20:28:47,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:28:47,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808364446] [2020-10-12 20:28:47,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:28:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:47,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:47,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:47,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:47,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:47,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:49,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:49,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:49,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:49,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:49,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:54,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:54,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 20:28:54,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:28:54,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6782 [2020-10-12 20:28:54,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:54,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:28:54,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:28:54,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 20:28:54,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:28:54,775 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 20:28:54,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:28:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:54,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:54,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:54,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:28:54,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:28:54,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:28:54,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:54,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:28:54,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:28:54,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:28:54,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:28:54,818 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 20:28:54,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808364446] [2020-10-12 20:28:54,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:28:54,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 20:28:54,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196403831] [2020-10-12 20:28:54,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 20:28:54,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:28:54,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 20:28:54,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:28:54,820 INFO L87 Difference]: Start difference. First operand 167773 states and 276246 transitions. Second operand 7 states. [2020-10-12 20:28:55,320 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-12 20:29:21,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:29:21,277 INFO L93 Difference]: Finished difference Result 378505 states and 623287 transitions. [2020-10-12 20:29:21,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:29:21,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-10-12 20:29:21,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:29:22,116 INFO L225 Difference]: With dead ends: 378505 [2020-10-12 20:29:22,116 INFO L226 Difference]: Without dead ends: 319482 [2020-10-12 20:29:22,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:29:22,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319482 states.