/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:27:29,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:27:29,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:27:30,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:27:30,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:27:30,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:27:30,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:27:30,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:27:30,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:27:30,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:27:30,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:27:30,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:27:30,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:27:30,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:27:30,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:27:30,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:27:30,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:27:30,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:27:30,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:27:30,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:27:30,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:27:30,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:27:30,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:27:30,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:27:30,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:27:30,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:27:30,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:27:30,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:27:30,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:27:30,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:27:30,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:27:30,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:27:30,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:27:30,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:27:30,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:27:30,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:27:30,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:27:30,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:27:30,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:27:30,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:27:30,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:27:30,068 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 14:27:30,110 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:27:30,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:27:30,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:27:30,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:27:30,113 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:27:30,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:27:30,114 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:27:30,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:27:30,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:27:30,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:27:30,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:27:30,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:27:30,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:27:30,117 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:27:30,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:27:30,117 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:27:30,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:27:30,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:27:30,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:27:30,118 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:27:30,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:27:30,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:27:30,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:27:30,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:27:30,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:27:30,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:27:30,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:27:30,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:27:30,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:27:30,120 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:27:30,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:27:30,412 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:27:30,415 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:27:30,417 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:27:30,417 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:27:30,418 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-13 14:27:30,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50f628535/207364db974a47c4a6d5615ab0a28dee/FLAG34585d0e0 [2020-10-13 14:27:31,013 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:27:31,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-13 14:27:31,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50f628535/207364db974a47c4a6d5615ab0a28dee/FLAG34585d0e0 [2020-10-13 14:27:31,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50f628535/207364db974a47c4a6d5615ab0a28dee [2020-10-13 14:27:31,346 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:27:31,348 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:27:31,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:27:31,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:27:31,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:27:31,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:27:31" (1/1) ... [2020-10-13 14:27:31,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17866592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:27:31, skipping insertion in model container [2020-10-13 14:27:31,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:27:31" (1/1) ... [2020-10-13 14:27:31,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:27:31,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:27:31,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:27:31,927 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:27:32,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:27:32,070 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:27:32,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:27:32 WrapperNode [2020-10-13 14:27:32,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:27:32,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:27:32,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:27:32,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:27:32,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:27:32" (1/1) ... [2020-10-13 14:27:32,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:27:32" (1/1) ... [2020-10-13 14:27:32,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:27:32" (1/1) ... [2020-10-13 14:27:32,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:27:32" (1/1) ... [2020-10-13 14:27:32,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:27:32" (1/1) ... [2020-10-13 14:27:32,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:27:32" (1/1) ... [2020-10-13 14:27:32,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:27:32" (1/1) ... [2020-10-13 14:27:32,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:27:32,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:27:32,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:27:32,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:27:32,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:27:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:27:32,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:27:32,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:27:32,245 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:27:32,245 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:27:32,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:27:32,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:27:32,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:27:32,247 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:27:32,248 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:27:32,248 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:27:32,248 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:27:32,248 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:27:32,248 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:27:32,248 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:27:32,249 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:27:32,249 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:27:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 14:27:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-13 14:27:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-13 14:27:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:27:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:27:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:27:32,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:27:32,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:27:33,355 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:27:33,355 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:27:33,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:27:33 BoogieIcfgContainer [2020-10-13 14:27:33,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:27:33,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:27:33,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:27:33,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:27:33,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:27:31" (1/3) ... [2020-10-13 14:27:33,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af27db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:27:33, skipping insertion in model container [2020-10-13 14:27:33,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:27:32" (2/3) ... [2020-10-13 14:27:33,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af27db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:27:33, skipping insertion in model container [2020-10-13 14:27:33,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:27:33" (3/3) ... [2020-10-13 14:27:33,370 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-13 14:27:33,381 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:27:33,390 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 14:27:33,404 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 14:27:33,432 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:27:33,432 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:27:33,432 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:27:33,432 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:27:33,433 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:27:33,433 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:27:33,433 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:27:33,433 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:27:33,458 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-10-13 14:27:33,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 14:27:33,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:27:33,473 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] [2020-10-13 14:27:33,473 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:27:33,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:27:33,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1581776616, now seen corresponding path program 1 times [2020-10-13 14:27:33,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:27:33,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477538237] [2020-10-13 14:27:33,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:27:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:27:34,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:34,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:34,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:34,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:34,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:34,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:34,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:35,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:35,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:35,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:37,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:37,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:37,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:37,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:37,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:37,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:38,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:38,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:27:38,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 14:27:38,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:27:38,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 14:27:38,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:27:38,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:27:38,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-13 14:27:38,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:27:38,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:27:39,271 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:27:39,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:27:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:27:39,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:39,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:27:39,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:27:39,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:27:39,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 14:27:39,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:27:39,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:27:39,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:27:39,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:27:39,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:27:39,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:27:39,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477538237] [2020-10-13 14:27:39,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:27:39,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:27:39,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397085774] [2020-10-13 14:27:39,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:27:39,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:27:39,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:27:39,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:27:39,390 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 4 states. [2020-10-13 14:27:39,783 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 14:27:41,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:27:41,217 INFO L93 Difference]: Finished difference Result 403 states and 670 transitions. [2020-10-13 14:27:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:27:41,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-10-13 14:27:41,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:27:41,241 INFO L225 Difference]: With dead ends: 403 [2020-10-13 14:27:41,242 INFO L226 Difference]: Without dead ends: 310 [2020-10-13 14:27:41,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:27:41,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-13 14:27:41,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 308. [2020-10-13 14:27:41,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-10-13 14:27:41,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 441 transitions. [2020-10-13 14:27:41,326 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 441 transitions. Word has length 112 [2020-10-13 14:27:41,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:27:41,327 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 441 transitions. [2020-10-13 14:27:41,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:27:41,328 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 441 transitions. [2020-10-13 14:27:41,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 14:27:41,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:27:41,332 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] [2020-10-13 14:27:41,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:27:41,333 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:27:41,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:27:41,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1235271490, now seen corresponding path program 1 times [2020-10-13 14:27:41,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:27:41,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241103339] [2020-10-13 14:27:41,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:27:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:27:41,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:41,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:41,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:41,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:41,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:41,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:42,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:42,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:42,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:42,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:42,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:43,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:43,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:44,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:44,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:45,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:45,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:46,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:27:46,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 14:27:46,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:27:46,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 14:27:46,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:27:46,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:27:46,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:27:46,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 14:27:46,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:27:46,754 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:27:46,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:27:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:27:46,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:46,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:27:46,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:27:46,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:27:46,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:27:46,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:27:46,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:27:46,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:27:46,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:27:46,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:27:46,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:27:46,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241103339] [2020-10-13 14:27:46,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:27:46,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:27:46,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342362858] [2020-10-13 14:27:46,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:27:46,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:27:46,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:27:46,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:27:46,860 INFO L87 Difference]: Start difference. First operand 308 states and 441 transitions. Second operand 7 states. [2020-10-13 14:27:47,103 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:27:49,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:27:49,033 INFO L93 Difference]: Finished difference Result 1821 states and 2813 transitions. [2020-10-13 14:27:49,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:27:49,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-13 14:27:49,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:27:49,051 INFO L225 Difference]: With dead ends: 1821 [2020-10-13 14:27:49,052 INFO L226 Difference]: Without dead ends: 1586 [2020-10-13 14:27:49,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:27:49,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2020-10-13 14:27:49,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 730. [2020-10-13 14:27:49,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 730 states. [2020-10-13 14:27:49,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1099 transitions. [2020-10-13 14:27:49,166 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1099 transitions. Word has length 114 [2020-10-13 14:27:49,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:27:49,167 INFO L479 AbstractCegarLoop]: Abstraction has 730 states and 1099 transitions. [2020-10-13 14:27:49,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:27:49,167 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1099 transitions. [2020-10-13 14:27:49,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 14:27:49,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:27:49,178 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] [2020-10-13 14:27:49,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:27:49,178 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:27:49,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:27:49,179 INFO L82 PathProgramCache]: Analyzing trace with hash 892116020, now seen corresponding path program 1 times [2020-10-13 14:27:49,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:27:49,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568058956] [2020-10-13 14:27:49,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:27:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:27:49,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:49,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:49,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:49,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:49,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:49,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:49,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:50,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:50,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:53,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:53,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:53,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:54,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:27:54,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 14:27:54,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:27:54,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:27:54,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:27:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:27:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 14:27:54,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 14:27:54,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:27:54,509 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:27:54,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:27:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:27:54,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:54,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:27:54,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:27:54,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:27:54,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 14:27:54,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:27:54,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:27:54,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:27:54,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:27:54,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 14:27:54,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:27:54,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568058956] [2020-10-13 14:27:54,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:27:54,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:27:54,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134184098] [2020-10-13 14:27:54,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:27:54,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:27:54,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:27:54,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:27:54,590 INFO L87 Difference]: Start difference. First operand 730 states and 1099 transitions. Second operand 7 states. [2020-10-13 14:27:54,821 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:27:56,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:27:56,525 INFO L93 Difference]: Finished difference Result 4904 states and 7665 transitions. [2020-10-13 14:27:56,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:27:56,525 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-10-13 14:27:56,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:27:56,549 INFO L225 Difference]: With dead ends: 4904 [2020-10-13 14:27:56,549 INFO L226 Difference]: Without dead ends: 4266 [2020-10-13 14:27:56,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:27:56,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4266 states. [2020-10-13 14:27:56,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4266 to 1866. [2020-10-13 14:27:56,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1866 states. [2020-10-13 14:27:56,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 2873 transitions. [2020-10-13 14:27:56,685 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 2873 transitions. Word has length 115 [2020-10-13 14:27:56,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:27:56,686 INFO L479 AbstractCegarLoop]: Abstraction has 1866 states and 2873 transitions. [2020-10-13 14:27:56,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:27:56,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 2873 transitions. [2020-10-13 14:27:56,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 14:27:56,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:27:56,689 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] [2020-10-13 14:27:56,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:27:56,690 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:27:56,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:27:56,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1547786483, now seen corresponding path program 1 times [2020-10-13 14:27:56,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:27:56,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823372163] [2020-10-13 14:27:56,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:27:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:27:56,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:56,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:56,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:56,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:56,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:57,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:57,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:57,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:57,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:59,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:59,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:59,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:01,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:01,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 14:28:01,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:28:01,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:28:01,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:01,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:28:01,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:28:01,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 14:28:01,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:28:02,072 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:28:02,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:28:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:02,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:02,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:02,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:28:02,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:28:02,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:28:02,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:02,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:28:02,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:28:02,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:28:02,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:02,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:28:02,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823372163] [2020-10-13 14:28:02,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:28:02,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:28:02,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661096052] [2020-10-13 14:28:02,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:28:02,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:28:02,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:28:02,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:28:02,150 INFO L87 Difference]: Start difference. First operand 1866 states and 2873 transitions. Second operand 7 states. [2020-10-13 14:28:02,585 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:28:04,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:28:04,627 INFO L93 Difference]: Finished difference Result 14661 states and 22953 transitions. [2020-10-13 14:28:04,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:28:04,628 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-13 14:28:04,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:28:04,695 INFO L225 Difference]: With dead ends: 14661 [2020-10-13 14:28:04,695 INFO L226 Difference]: Without dead ends: 12860 [2020-10-13 14:28:04,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:28:04,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12860 states. [2020-10-13 14:28:05,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12860 to 5318. [2020-10-13 14:28:05,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5318 states. [2020-10-13 14:28:05,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5318 states to 5318 states and 8249 transitions. [2020-10-13 14:28:05,076 INFO L78 Accepts]: Start accepts. Automaton has 5318 states and 8249 transitions. Word has length 116 [2020-10-13 14:28:05,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:28:05,077 INFO L479 AbstractCegarLoop]: Abstraction has 5318 states and 8249 transitions. [2020-10-13 14:28:05,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:28:05,077 INFO L276 IsEmpty]: Start isEmpty. Operand 5318 states and 8249 transitions. [2020-10-13 14:28:05,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 14:28:05,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:28:05,083 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] [2020-10-13 14:28:05,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:28:05,084 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:28:05,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:28:05,084 INFO L82 PathProgramCache]: Analyzing trace with hash 596080786, now seen corresponding path program 1 times [2020-10-13 14:28:05,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:28:05,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532901024] [2020-10-13 14:28:05,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:28:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:05,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:05,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:05,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:05,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:05,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:05,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:05,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:06,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:10,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:10,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 14:28:10,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:28:10,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 14:28:10,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:10,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:28:10,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:28:10,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 14:28:10,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:28:10,480 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:28:10,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:28:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:10,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:10,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:10,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:28:10,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:28:10,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 14:28:10,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:10,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:28:10,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:28:10,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:28:10,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:28:10,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:28:10,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532901024] [2020-10-13 14:28:10,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:28:10,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:28:10,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736251095] [2020-10-13 14:28:10,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:28:10,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:28:10,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:28:10,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:28:10,563 INFO L87 Difference]: Start difference. First operand 5318 states and 8249 transitions. Second operand 7 states. [2020-10-13 14:28:10,891 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:28:13,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:28:13,269 INFO L93 Difference]: Finished difference Result 25482 states and 39845 transitions. [2020-10-13 14:28:13,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:28:13,270 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2020-10-13 14:28:13,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:28:13,331 INFO L225 Difference]: With dead ends: 25482 [2020-10-13 14:28:13,331 INFO L226 Difference]: Without dead ends: 22405 [2020-10-13 14:28:13,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:28:13,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22405 states. [2020-10-13 14:28:13,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22405 to 6959. [2020-10-13 14:28:13,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6959 states. [2020-10-13 14:28:13,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6959 states to 6959 states and 10757 transitions. [2020-10-13 14:28:13,854 INFO L78 Accepts]: Start accepts. Automaton has 6959 states and 10757 transitions. Word has length 117 [2020-10-13 14:28:13,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:28:13,854 INFO L479 AbstractCegarLoop]: Abstraction has 6959 states and 10757 transitions. [2020-10-13 14:28:13,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:28:13,855 INFO L276 IsEmpty]: Start isEmpty. Operand 6959 states and 10757 transitions. [2020-10-13 14:28:13,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 14:28:13,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:28:13,862 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] [2020-10-13 14:28:13,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:28:13,862 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:28:13,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:28:13,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1829228259, now seen corresponding path program 1 times [2020-10-13 14:28:13,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:28:13,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858787196] [2020-10-13 14:28:13,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:28:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:13,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:13,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:13,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:14,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:14,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:14,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:14,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:14,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:17,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:17,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:17,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:18,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:18,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:18,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:18,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 14:28:18,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:28:18,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 14:28:18,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:18,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:28:18,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 14:28:18,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 14:28:18,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:19,245 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:28:19,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:28:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:19,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:19,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:19,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:28:19,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:28:19,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:28:19,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:19,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:28:19,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:28:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:28:19,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:19,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:28:19,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858787196] [2020-10-13 14:28:19,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:28:19,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:28:19,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535516293] [2020-10-13 14:28:19,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:28:19,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:28:19,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:28:19,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:28:19,295 INFO L87 Difference]: Start difference. First operand 6959 states and 10757 transitions. Second operand 7 states. [2020-10-13 14:28:19,530 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:28:22,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:28:22,898 INFO L93 Difference]: Finished difference Result 49408 states and 76919 transitions. [2020-10-13 14:28:22,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:28:22,898 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2020-10-13 14:28:22,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:28:22,987 INFO L225 Difference]: With dead ends: 49408 [2020-10-13 14:28:22,987 INFO L226 Difference]: Without dead ends: 43336 [2020-10-13 14:28:23,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:28:23,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43336 states. [2020-10-13 14:28:23,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43336 to 13160. [2020-10-13 14:28:23,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13160 states. [2020-10-13 14:28:23,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13160 states to 13160 states and 20293 transitions. [2020-10-13 14:28:23,829 INFO L78 Accepts]: Start accepts. Automaton has 13160 states and 20293 transitions. Word has length 117 [2020-10-13 14:28:23,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:28:23,830 INFO L479 AbstractCegarLoop]: Abstraction has 13160 states and 20293 transitions. [2020-10-13 14:28:23,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:28:23,830 INFO L276 IsEmpty]: Start isEmpty. Operand 13160 states and 20293 transitions. [2020-10-13 14:28:23,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 14:28:23,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:28:23,842 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] [2020-10-13 14:28:23,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:28:23,842 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:28:23,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:28:23,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1078829821, now seen corresponding path program 1 times [2020-10-13 14:28:23,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:28:23,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119422268] [2020-10-13 14:28:23,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:28:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:23,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:23,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:23,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:24,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:24,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:24,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:24,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:24,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:26,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:26,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:26,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:27,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:27,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:28,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:28,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 14:28:28,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:28:28,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:28:28,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:28,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:28:28,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 14:28:28,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 14:28:28,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:29,119 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:28:29,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:28:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:29,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:29,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:29,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:28:29,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:28:29,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:28:29,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:29,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:28:29,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:28:29,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:28:29,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:29,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:28:29,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119422268] [2020-10-13 14:28:29,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:28:29,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:28:29,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958580767] [2020-10-13 14:28:29,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:28:29,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:28:29,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:28:29,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:28:29,162 INFO L87 Difference]: Start difference. First operand 13160 states and 20293 transitions. Second operand 7 states. [2020-10-13 14:28:29,407 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:28:32,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:28:32,929 INFO L93 Difference]: Finished difference Result 46272 states and 71613 transitions. [2020-10-13 14:28:32,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:28:32,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2020-10-13 14:28:32,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:28:33,006 INFO L225 Difference]: With dead ends: 46272 [2020-10-13 14:28:33,006 INFO L226 Difference]: Without dead ends: 38691 [2020-10-13 14:28:33,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:28:33,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38691 states. [2020-10-13 14:28:33,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38691 to 12993. [2020-10-13 14:28:33,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12993 states. [2020-10-13 14:28:33,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12993 states to 12993 states and 20031 transitions. [2020-10-13 14:28:33,969 INFO L78 Accepts]: Start accepts. Automaton has 12993 states and 20031 transitions. Word has length 117 [2020-10-13 14:28:33,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:28:33,969 INFO L479 AbstractCegarLoop]: Abstraction has 12993 states and 20031 transitions. [2020-10-13 14:28:33,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:28:33,969 INFO L276 IsEmpty]: Start isEmpty. Operand 12993 states and 20031 transitions. [2020-10-13 14:28:33,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 14:28:33,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:28:33,981 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] [2020-10-13 14:28:33,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:28:33,982 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:28:33,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:28:33,982 INFO L82 PathProgramCache]: Analyzing trace with hash 402257519, now seen corresponding path program 1 times [2020-10-13 14:28:33,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:28:33,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145983540] [2020-10-13 14:28:33,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:28:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:34,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:34,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:34,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:34,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:34,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:34,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:34,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:35,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:39,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:39,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 14:28:39,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:28:39,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:28:39,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:39,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:28:39,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:28:39,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 14:28:39,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:39,259 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:28:39,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:28:39,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:39,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:39,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:39,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:28:39,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:28:39,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:28:39,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:39,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:28:39,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:28:39,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:28:39,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:39,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:28:39,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145983540] [2020-10-13 14:28:39,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:28:39,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:28:39,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328107804] [2020-10-13 14:28:39,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:28:39,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:28:39,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:28:39,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:28:39,304 INFO L87 Difference]: Start difference. First operand 12993 states and 20031 transitions. Second operand 7 states. [2020-10-13 14:28:39,551 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:28:42,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:28:42,790 INFO L93 Difference]: Finished difference Result 48075 states and 74419 transitions. [2020-10-13 14:28:42,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:28:42,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-13 14:28:42,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:28:42,851 INFO L225 Difference]: With dead ends: 48075 [2020-10-13 14:28:42,851 INFO L226 Difference]: Without dead ends: 36756 [2020-10-13 14:28:42,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:28:42,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36756 states. [2020-10-13 14:28:43,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36756 to 12758. [2020-10-13 14:28:43,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12758 states. [2020-10-13 14:28:43,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12758 states to 12758 states and 19665 transitions. [2020-10-13 14:28:43,991 INFO L78 Accepts]: Start accepts. Automaton has 12758 states and 19665 transitions. Word has length 118 [2020-10-13 14:28:43,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:28:43,992 INFO L479 AbstractCegarLoop]: Abstraction has 12758 states and 19665 transitions. [2020-10-13 14:28:43,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:28:43,992 INFO L276 IsEmpty]: Start isEmpty. Operand 12758 states and 19665 transitions. [2020-10-13 14:28:44,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 14:28:44,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:28:44,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:28:44,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:28:44,003 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:28:44,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:28:44,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1732889150, now seen corresponding path program 1 times [2020-10-13 14:28:44,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:28:44,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662870253] [2020-10-13 14:28:44,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:28:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:44,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:44,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:44,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:44,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:44,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:44,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:44,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:44,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:45,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:49,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:49,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 14:28:49,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:28:49,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:28:49,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:49,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:28:49,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:28:49,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 14:28:49,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:49,276 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:28:49,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:28:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:49,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:49,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:49,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:28:49,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:28:49,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:28:49,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:49,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:28:49,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:28:49,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:28:49,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:28:49,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662870253] [2020-10-13 14:28:49,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:28:49,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:28:49,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486718713] [2020-10-13 14:28:49,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:28:49,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:28:49,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:28:49,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:28:49,318 INFO L87 Difference]: Start difference. First operand 12758 states and 19665 transitions. Second operand 7 states. [2020-10-13 14:28:49,564 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:28:53,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:28:53,305 INFO L93 Difference]: Finished difference Result 47714 states and 73873 transitions. [2020-10-13 14:28:53,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:28:53,305 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-13 14:28:53,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:28:53,370 INFO L225 Difference]: With dead ends: 47714 [2020-10-13 14:28:53,370 INFO L226 Difference]: Without dead ends: 36379 [2020-10-13 14:28:53,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:28:53,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36379 states. [2020-10-13 14:28:54,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36379 to 12507. [2020-10-13 14:28:54,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12507 states. [2020-10-13 14:28:54,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12507 states to 12507 states and 19283 transitions. [2020-10-13 14:28:54,338 INFO L78 Accepts]: Start accepts. Automaton has 12507 states and 19283 transitions. Word has length 118 [2020-10-13 14:28:54,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:28:54,338 INFO L479 AbstractCegarLoop]: Abstraction has 12507 states and 19283 transitions. [2020-10-13 14:28:54,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:28:54,338 INFO L276 IsEmpty]: Start isEmpty. Operand 12507 states and 19283 transitions. [2020-10-13 14:28:54,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 14:28:54,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:28:54,346 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] [2020-10-13 14:28:54,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:28:54,347 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:28:54,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:28:54,347 INFO L82 PathProgramCache]: Analyzing trace with hash 446770255, now seen corresponding path program 1 times [2020-10-13 14:28:54,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:28:54,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167698524] [2020-10-13 14:28:54,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:28:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:54,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:54,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:54,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:54,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:55,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:55,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:55,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:55,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:58,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:58,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:59,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:59,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 14:28:59,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:28:59,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:28:59,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:59,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:28:59,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:28:59,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 14:28:59,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:59,620 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:28:59,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:28:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:59,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:59,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:59,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:28:59,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:28:59,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:28:59,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:59,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:28:59,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:28:59,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:28:59,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:59,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:28:59,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167698524] [2020-10-13 14:28:59,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:28:59,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:28:59,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497162030] [2020-10-13 14:28:59,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:28:59,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:28:59,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:28:59,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:28:59,651 INFO L87 Difference]: Start difference. First operand 12507 states and 19283 transitions. Second operand 7 states. [2020-10-13 14:28:59,890 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:29:04,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:29:04,091 INFO L93 Difference]: Finished difference Result 55522 states and 86073 transitions. [2020-10-13 14:29:04,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:29:04,092 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-13 14:29:04,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:29:04,147 INFO L225 Difference]: With dead ends: 55522 [2020-10-13 14:29:04,147 INFO L226 Difference]: Without dead ends: 47925 [2020-10-13 14:29:04,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:29:04,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47925 states. [2020-10-13 14:29:05,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47925 to 16329. [2020-10-13 14:29:05,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16329 states. [2020-10-13 14:29:05,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16329 states to 16329 states and 25211 transitions. [2020-10-13 14:29:05,366 INFO L78 Accepts]: Start accepts. Automaton has 16329 states and 25211 transitions. Word has length 118 [2020-10-13 14:29:05,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:29:05,366 INFO L479 AbstractCegarLoop]: Abstraction has 16329 states and 25211 transitions. [2020-10-13 14:29:05,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:29:05,367 INFO L276 IsEmpty]: Start isEmpty. Operand 16329 states and 25211 transitions. [2020-10-13 14:29:05,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 14:29:05,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:29:05,373 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] [2020-10-13 14:29:05,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:29:05,373 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:29:05,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:29:05,373 INFO L82 PathProgramCache]: Analyzing trace with hash 19636254, now seen corresponding path program 1 times [2020-10-13 14:29:05,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:29:05,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258322676] [2020-10-13 14:29:05,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:29:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:05,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:05,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:05,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:05,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:05,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:05,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:05,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:06,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:09,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:09,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:09,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:10,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:10,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:10,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 14:29:10,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:29:10,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 14:29:10,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:10,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:29:10,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:29:10,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 14:29:10,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:10,649 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:29:10,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:29:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:10,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:10,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:10,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:29:10,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:29:10,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:29:10,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:10,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:29:10,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:29:10,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:29:10,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:10,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:29:10,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258322676] [2020-10-13 14:29:10,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:29:10,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:29:10,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648877228] [2020-10-13 14:29:10,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:29:10,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:29:10,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:29:10,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:29:10,680 INFO L87 Difference]: Start difference. First operand 16329 states and 25211 transitions. Second operand 7 states. [2020-10-13 14:29:10,926 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:29:17,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:29:17,692 INFO L93 Difference]: Finished difference Result 78513 states and 121362 transitions. [2020-10-13 14:29:17,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:29:17,692 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-13 14:29:17,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:29:17,764 INFO L225 Difference]: With dead ends: 78513 [2020-10-13 14:29:17,764 INFO L226 Difference]: Without dead ends: 70556 [2020-10-13 14:29:17,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:29:17,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70556 states. [2020-10-13 14:29:20,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70556 to 25103. [2020-10-13 14:29:20,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25103 states. [2020-10-13 14:29:20,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25103 states to 25103 states and 38561 transitions. [2020-10-13 14:29:20,932 INFO L78 Accepts]: Start accepts. Automaton has 25103 states and 38561 transitions. Word has length 118 [2020-10-13 14:29:20,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:29:20,932 INFO L479 AbstractCegarLoop]: Abstraction has 25103 states and 38561 transitions. [2020-10-13 14:29:20,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:29:20,932 INFO L276 IsEmpty]: Start isEmpty. Operand 25103 states and 38561 transitions. [2020-10-13 14:29:20,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 14:29:20,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:29:20,942 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] [2020-10-13 14:29:20,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:29:20,943 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:29:20,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:29:20,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1400652883, now seen corresponding path program 1 times [2020-10-13 14:29:20,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:29:20,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479766327] [2020-10-13 14:29:20,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:29:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:20,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:21,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:21,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:21,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:21,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:21,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:21,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:23,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:23,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:24,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:24,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:24,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:24,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:25,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:25,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:25,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:25,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:25,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 14:29:25,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:29:25,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:29:25,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:25,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:29:25,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:29:25,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 14:29:25,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:26,211 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:29:26,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:29:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:26,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:26,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:26,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:29:26,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:29:26,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:29:26,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:26,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:29:26,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:29:26,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:29:26,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:26,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:29:26,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479766327] [2020-10-13 14:29:26,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:29:26,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:29:26,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739950703] [2020-10-13 14:29:26,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:29:26,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:29:26,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:29:26,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:29:26,243 INFO L87 Difference]: Start difference. First operand 25103 states and 38561 transitions. Second operand 7 states. [2020-10-13 14:29:26,486 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:29:33,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:29:33,742 INFO L93 Difference]: Finished difference Result 87162 states and 134177 transitions. [2020-10-13 14:29:33,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:29:33,743 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-13 14:29:33,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:29:33,815 INFO L225 Difference]: With dead ends: 87162 [2020-10-13 14:29:33,816 INFO L226 Difference]: Without dead ends: 64212 [2020-10-13 14:29:33,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:29:33,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64212 states. [2020-10-13 14:29:36,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64212 to 22318. [2020-10-13 14:29:36,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22318 states. [2020-10-13 14:29:36,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22318 states to 22318 states and 34272 transitions. [2020-10-13 14:29:36,091 INFO L78 Accepts]: Start accepts. Automaton has 22318 states and 34272 transitions. Word has length 118 [2020-10-13 14:29:36,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:29:36,092 INFO L479 AbstractCegarLoop]: Abstraction has 22318 states and 34272 transitions. [2020-10-13 14:29:36,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:29:36,092 INFO L276 IsEmpty]: Start isEmpty. Operand 22318 states and 34272 transitions. [2020-10-13 14:29:36,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 14:29:36,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:29:36,102 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] [2020-10-13 14:29:36,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:29:36,102 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:29:36,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:29:36,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1710712436, now seen corresponding path program 1 times [2020-10-13 14:29:36,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:29:36,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607183484] [2020-10-13 14:29:36,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:29:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:36,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:36,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:36,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:36,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:36,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:36,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:36,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:37,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:37,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:37,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:41,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:41,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 14:29:41,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:29:41,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:29:41,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:41,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:29:41,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:29:41,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 14:29:41,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:41,410 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:29:41,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:29:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:41,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:41,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:41,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:29:41,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:29:41,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 14:29:41,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:41,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:29:41,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:29:41,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:29:41,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:41,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:29:41,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607183484] [2020-10-13 14:29:41,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:29:41,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:29:41,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605346193] [2020-10-13 14:29:41,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:29:41,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:29:41,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:29:41,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:29:41,473 INFO L87 Difference]: Start difference. First operand 22318 states and 34272 transitions. Second operand 6 states. [2020-10-13 14:29:41,698 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 14:29:46,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:29:46,018 INFO L93 Difference]: Finished difference Result 44277 states and 67981 transitions. [2020-10-13 14:29:46,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:29:46,018 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-10-13 14:29:46,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:29:46,052 INFO L225 Difference]: With dead ends: 44277 [2020-10-13 14:29:46,052 INFO L226 Difference]: Without dead ends: 33166 [2020-10-13 14:29:46,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:29:46,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33166 states. [2020-10-13 14:29:48,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33166 to 22402. [2020-10-13 14:29:48,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22402 states. [2020-10-13 14:29:48,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22402 states to 22402 states and 34192 transitions. [2020-10-13 14:29:48,622 INFO L78 Accepts]: Start accepts. Automaton has 22402 states and 34192 transitions. Word has length 119 [2020-10-13 14:29:48,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:29:48,622 INFO L479 AbstractCegarLoop]: Abstraction has 22402 states and 34192 transitions. [2020-10-13 14:29:48,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:29:48,623 INFO L276 IsEmpty]: Start isEmpty. Operand 22402 states and 34192 transitions. [2020-10-13 14:29:48,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 14:29:48,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:29:48,632 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] [2020-10-13 14:29:48,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:29:48,632 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:29:48,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:29:48,632 INFO L82 PathProgramCache]: Analyzing trace with hash 631422149, now seen corresponding path program 1 times [2020-10-13 14:29:48,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:29:48,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398069751] [2020-10-13 14:29:48,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:29:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:48,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:48,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:48,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:48,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:48,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:49,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:53,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:53,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 14:29:53,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:29:53,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:29:53,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:53,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:29:53,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:29:53,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 14:29:53,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:53,905 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:29:53,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:29:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:53,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:53,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:53,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:29:53,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:29:53,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:29:53,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:53,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:29:53,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:29:53,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:29:53,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:53,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:29:53,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398069751] [2020-10-13 14:29:53,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:29:53,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:29:53,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784673097] [2020-10-13 14:29:53,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:29:53,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:29:53,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:29:53,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:29:53,934 INFO L87 Difference]: Start difference. First operand 22402 states and 34192 transitions. Second operand 7 states. [2020-10-13 14:29:54,170 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:30:04,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:30:04,583 INFO L93 Difference]: Finished difference Result 96326 states and 147288 transitions. [2020-10-13 14:30:04,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:30:04,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-13 14:30:04,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:30:04,673 INFO L225 Difference]: With dead ends: 96326 [2020-10-13 14:30:04,673 INFO L226 Difference]: Without dead ends: 76746 [2020-10-13 14:30:04,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:30:04,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76746 states. [2020-10-13 14:30:07,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76746 to 22354. [2020-10-13 14:30:07,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22354 states. [2020-10-13 14:30:07,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22354 states to 22354 states and 34125 transitions. [2020-10-13 14:30:07,609 INFO L78 Accepts]: Start accepts. Automaton has 22354 states and 34125 transitions. Word has length 119 [2020-10-13 14:30:07,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:30:07,609 INFO L479 AbstractCegarLoop]: Abstraction has 22354 states and 34125 transitions. [2020-10-13 14:30:07,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:30:07,609 INFO L276 IsEmpty]: Start isEmpty. Operand 22354 states and 34125 transitions. [2020-10-13 14:30:07,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 14:30:07,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:30:07,618 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] [2020-10-13 14:30:07,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:30:07,619 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:30:07,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:30:07,619 INFO L82 PathProgramCache]: Analyzing trace with hash 763105428, now seen corresponding path program 1 times [2020-10-13 14:30:07,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:30:07,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802127257] [2020-10-13 14:30:07,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:30:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:07,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:07,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:07,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:07,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:08,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:10,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:10,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:10,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:10,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:10,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:12,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:12,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:12,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:12,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:12,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:12,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:12,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 14:30:12,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:30:12,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:30:12,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:12,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:30:12,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:30:12,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 14:30:12,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:12,871 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:30:12,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:30:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:12,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:12,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:12,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:30:12,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:30:12,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:30:12,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:12,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:30:12,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:30:12,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:30:12,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:12,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:30:12,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802127257] [2020-10-13 14:30:12,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:30:12,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:30:12,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593436087] [2020-10-13 14:30:12,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:30:12,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:30:12,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:30:12,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:30:12,902 INFO L87 Difference]: Start difference. First operand 22354 states and 34125 transitions. Second operand 7 states. [2020-10-13 14:30:13,136 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:30:24,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:30:24,390 INFO L93 Difference]: Finished difference Result 96148 states and 147013 transitions. [2020-10-13 14:30:24,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:30:24,390 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-13 14:30:24,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:30:24,473 INFO L225 Difference]: With dead ends: 96148 [2020-10-13 14:30:24,474 INFO L226 Difference]: Without dead ends: 76532 [2020-10-13 14:30:24,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:30:24,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76532 states. [2020-10-13 14:30:27,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76532 to 22305. [2020-10-13 14:30:27,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22305 states. [2020-10-13 14:30:27,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22305 states to 22305 states and 34054 transitions. [2020-10-13 14:30:27,533 INFO L78 Accepts]: Start accepts. Automaton has 22305 states and 34054 transitions. Word has length 119 [2020-10-13 14:30:27,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:30:27,533 INFO L479 AbstractCegarLoop]: Abstraction has 22305 states and 34054 transitions. [2020-10-13 14:30:27,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:30:27,534 INFO L276 IsEmpty]: Start isEmpty. Operand 22305 states and 34054 transitions. [2020-10-13 14:30:27,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 14:30:27,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:30:27,544 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] [2020-10-13 14:30:27,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:30:27,544 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:30:27,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:30:27,545 INFO L82 PathProgramCache]: Analyzing trace with hash 335971427, now seen corresponding path program 1 times [2020-10-13 14:30:27,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:30:27,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846309882] [2020-10-13 14:30:27,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:30:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:27,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:27,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:27,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:27,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:27,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:28,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:32,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:32,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 14:30:32,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:30:32,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:30:32,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:32,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:30:32,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:30:32,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 14:30:32,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:32,839 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:30:32,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:30:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:32,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:32,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:32,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:30:32,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:30:32,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 14:30:32,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:32,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:30:32,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:30:32,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:30:32,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:32,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:30:32,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846309882] [2020-10-13 14:30:32,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:30:32,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:30:32,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298715583] [2020-10-13 14:30:32,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:30:32,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:30:32,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:30:32,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:30:32,890 INFO L87 Difference]: Start difference. First operand 22305 states and 34054 transitions. Second operand 6 states. [2020-10-13 14:30:33,196 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 14:30:36,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:30:36,875 INFO L93 Difference]: Finished difference Result 42650 states and 65168 transitions. [2020-10-13 14:30:36,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:30:36,875 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-10-13 14:30:36,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:30:36,902 INFO L225 Difference]: With dead ends: 42650 [2020-10-13 14:30:36,902 INFO L226 Difference]: Without dead ends: 22190 [2020-10-13 14:30:36,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:30:36,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22190 states. [2020-10-13 14:30:39,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22190 to 22188. [2020-10-13 14:30:39,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22188 states. [2020-10-13 14:30:39,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22188 states to 22188 states and 33889 transitions. [2020-10-13 14:30:39,732 INFO L78 Accepts]: Start accepts. Automaton has 22188 states and 33889 transitions. Word has length 119 [2020-10-13 14:30:39,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:30:39,732 INFO L479 AbstractCegarLoop]: Abstraction has 22188 states and 33889 transitions. [2020-10-13 14:30:39,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:30:39,733 INFO L276 IsEmpty]: Start isEmpty. Operand 22188 states and 33889 transitions. [2020-10-13 14:30:39,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 14:30:39,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:30:39,740 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] [2020-10-13 14:30:39,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:30:39,740 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:30:39,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:30:39,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1907456692, now seen corresponding path program 1 times [2020-10-13 14:30:39,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:30:39,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278042216] [2020-10-13 14:30:39,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:30:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:39,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:39,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:39,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:39,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:40,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:41,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:42,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:42,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:42,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:42,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:43,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:43,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:43,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:44,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:44,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:44,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:44,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:44,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 14:30:44,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:30:44,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:30:44,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:44,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:30:44,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:30:44,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 14:30:44,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:45,000 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:30:45,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:30:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:45,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:45,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:45,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:30:45,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:30:45,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:30:45,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:45,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:30:45,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:30:45,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:30:45,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:45,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:30:45,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278042216] [2020-10-13 14:30:45,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:30:45,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:30:45,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453065017] [2020-10-13 14:30:45,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:30:45,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:30:45,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:30:45,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:30:45,030 INFO L87 Difference]: Start difference. First operand 22188 states and 33889 transitions. Second operand 7 states. [2020-10-13 14:30:45,270 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:30:57,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:30:57,510 INFO L93 Difference]: Finished difference Result 95616 states and 146192 transitions. [2020-10-13 14:30:57,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:30:57,511 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-13 14:30:57,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:30:57,591 INFO L225 Difference]: With dead ends: 95616 [2020-10-13 14:30:57,591 INFO L226 Difference]: Without dead ends: 75909 [2020-10-13 14:30:57,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:30:57,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75909 states. [2020-10-13 14:31:00,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75909 to 22108. [2020-10-13 14:31:00,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22108 states. [2020-10-13 14:31:00,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22108 states to 22108 states and 33766 transitions. [2020-10-13 14:31:00,848 INFO L78 Accepts]: Start accepts. Automaton has 22108 states and 33766 transitions. Word has length 119 [2020-10-13 14:31:00,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:31:00,849 INFO L479 AbstractCegarLoop]: Abstraction has 22108 states and 33766 transitions. [2020-10-13 14:31:00,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:31:00,849 INFO L276 IsEmpty]: Start isEmpty. Operand 22108 states and 33766 transitions. [2020-10-13 14:31:00,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 14:31:00,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:31:00,857 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] [2020-10-13 14:31:00,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 14:31:00,857 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:31:00,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:31:00,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1056878973, now seen corresponding path program 1 times [2020-10-13 14:31:00,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:31:00,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931735788] [2020-10-13 14:31:00,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:31:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:00,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:00,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:00,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:00,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:01,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:01,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:01,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:01,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:01,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:01,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:02,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:02,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:02,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:02,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:05,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:05,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 14:31:05,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:31:05,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:31:05,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:05,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:31:05,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:31:05,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 14:31:05,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:06,134 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:31:06,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:31:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:06,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:06,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:06,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:31:06,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:31:06,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:31:06,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:06,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:31:06,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:31:06,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:31:06,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:06,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:31:06,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931735788] [2020-10-13 14:31:06,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:31:06,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:31:06,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010214612] [2020-10-13 14:31:06,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:31:06,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:31:06,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:31:06,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:31:06,164 INFO L87 Difference]: Start difference. First operand 22108 states and 33766 transitions. Second operand 7 states. [2020-10-13 14:31:06,411 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 14:31:18,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:31:18,885 INFO L93 Difference]: Finished difference Result 95207 states and 145581 transitions. [2020-10-13 14:31:18,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:31:18,886 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-13 14:31:18,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:31:18,963 INFO L225 Difference]: With dead ends: 95207 [2020-10-13 14:31:18,963 INFO L226 Difference]: Without dead ends: 75472 [2020-10-13 14:31:18,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:31:19,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75472 states. [2020-10-13 14:31:22,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75472 to 22031. [2020-10-13 14:31:22,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22031 states. [2020-10-13 14:31:22,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22031 states to 22031 states and 33646 transitions. [2020-10-13 14:31:22,301 INFO L78 Accepts]: Start accepts. Automaton has 22031 states and 33646 transitions. Word has length 119 [2020-10-13 14:31:22,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:31:22,301 INFO L479 AbstractCegarLoop]: Abstraction has 22031 states and 33646 transitions. [2020-10-13 14:31:22,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:31:22,302 INFO L276 IsEmpty]: Start isEmpty. Operand 22031 states and 33646 transitions. [2020-10-13 14:31:22,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 14:31:22,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:31:22,308 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] [2020-10-13 14:31:22,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 14:31:22,309 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:31:22,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:31:22,309 INFO L82 PathProgramCache]: Analyzing trace with hash 103603870, now seen corresponding path program 1 times [2020-10-13 14:31:22,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:31:22,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124688912] [2020-10-13 14:31:22,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:31:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:22,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:22,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:22,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:22,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking...