/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 SingleStatement --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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/gcd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:08:55,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:08:55,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:08:56,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:08:56,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:08:56,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:08:56,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:08:56,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:08:56,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:08:56,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:08:56,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:08:56,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:08:56,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:08:56,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:08:56,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:08:56,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:08:56,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:08:56,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:08:56,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:08:56,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:08:56,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:08:56,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:08:56,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:08:56,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:08:56,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:08:56,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:08:56,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:08:56,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:08:56,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:08:56,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:08:56,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:08:56,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:08:56,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:08:56,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:08:56,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:08:56,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:08:56,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:08:56,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:08:56,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:08:56,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:08:56,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:08:56,099 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 [2020-09-25 03:08:56,144 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:08:56,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:08:56,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:08:56,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:08:56,146 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:08:56,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:08:56,147 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:08:56,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:08:56,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:08:56,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:08:56,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:08:56,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:08:56,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:08:56,150 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:08:56,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:08:56,150 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:08:56,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:08:56,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:08:56,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:08:56,151 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:08:56,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:08:56,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:08:56,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:08:56,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:08:56,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:08:56,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:08:56,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:08:56,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:08:56,153 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:08:56,153 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 -> SingleStatement 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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=true; [2020-09-25 03:08:56,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:08:56,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:08:56,650 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:08:56,653 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:08:56,654 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:08:56,655 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/gcd01-1.c [2020-09-25 03:08:56,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e231d94c1/04484650a0c34ad788830bb8e7466a05/FLAGae7480bc7 [2020-09-25 03:08:57,330 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:08:57,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/gcd01-1.c [2020-09-25 03:08:57,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e231d94c1/04484650a0c34ad788830bb8e7466a05/FLAGae7480bc7 [2020-09-25 03:08:57,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e231d94c1/04484650a0c34ad788830bb8e7466a05 [2020-09-25 03:08:57,691 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:08:57,696 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:08:57,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:08:57,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:08:57,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:08:57,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:08:57" (1/1) ... [2020-09-25 03:08:57,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54bef0fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:57, skipping insertion in model container [2020-09-25 03:08:57,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:08:57" (1/1) ... [2020-09-25 03:08:57,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:08:57,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:08:57,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:08:57,946 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:08:57,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:08:57,986 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:08:57,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:57 WrapperNode [2020-09-25 03:08:57,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:08:57,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:08:57,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:08:57,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:08:58,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:57" (1/1) ... [2020-09-25 03:08:58,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:57" (1/1) ... [2020-09-25 03:08:58,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:57" (1/1) ... [2020-09-25 03:08:58,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:57" (1/1) ... [2020-09-25 03:08:58,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:57" (1/1) ... [2020-09-25 03:08:58,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:57" (1/1) ... [2020-09-25 03:08:58,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:57" (1/1) ... [2020-09-25 03:08:58,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:08:58,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:08:58,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:08:58,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:08:58,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:57" (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 [2020-09-25 03:08:58,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:08:58,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:08:58,175 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2020-09-25 03:08:58,176 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:08:58,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:08:58,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:08:58,176 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2020-09-25 03:08:58,176 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:08:58,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:08:58,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:08:58,413 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:08:58,414 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:08:58,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:08:58 BoogieIcfgContainer [2020-09-25 03:08:58,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:08:58,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:08:58,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:08:58,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:08:58,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:08:57" (1/3) ... [2020-09-25 03:08:58,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a95e166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:08:58, skipping insertion in model container [2020-09-25 03:08:58,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:57" (2/3) ... [2020-09-25 03:08:58,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a95e166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:08:58, skipping insertion in model container [2020-09-25 03:08:58,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:08:58" (3/3) ... [2020-09-25 03:08:58,432 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd01-1.c [2020-09-25 03:08:58,448 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:08:58,460 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:08:58,485 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:08:58,532 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:08:58,533 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:08:58,537 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:08:58,537 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:08:58,537 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:08:58,537 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:08:58,537 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:08:58,537 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:08:58,561 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-25 03:08:58,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 03:08:58,569 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:58,570 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] [2020-09-25 03:08:58,570 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:58,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:58,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1470222128, now seen corresponding path program 1 times [2020-09-25 03:08:58,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:58,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441445552] [2020-09-25 03:08:58,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:58,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:58,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:59,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:08:59,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:59,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-09-25 03:08:59,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:59,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:08:59,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:08:59,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 03:08:59,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:08:59,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:59,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:59,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:59,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:59,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:08:59,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:59,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:59,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:59,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:59,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:08:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:59,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:59,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:59,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:59,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 03:08:59,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:59,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:08:59,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:59,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:59,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:59,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:08:59,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441445552] [2020-09-25 03:08:59,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:08:59,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:08:59,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665145470] [2020-09-25 03:08:59,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:08:59,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:59,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:08:59,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:08:59,443 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 6 states. [2020-09-25 03:08:59,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:59,604 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 03:08:59,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:08:59,606 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-25 03:08:59,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:59,620 INFO L225 Difference]: With dead ends: 58 [2020-09-25 03:08:59,620 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 03:08:59,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:08:59,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 03:08:59,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 03:08:59,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 03:08:59,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-09-25 03:08:59,681 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 24 [2020-09-25 03:08:59,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:59,682 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-09-25 03:08:59,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:08:59,682 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-09-25 03:08:59,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 03:08:59,685 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:59,685 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] [2020-09-25 03:08:59,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:08:59,686 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:59,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:59,686 INFO L82 PathProgramCache]: Analyzing trace with hash 831268307, now seen corresponding path program 1 times [2020-09-25 03:08:59,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:59,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870891721] [2020-09-25 03:08:59,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:59,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:00,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:00,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:09:00,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:00,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-09-25 03:09:00,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:00,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:00,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:09:00,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 03:09:00,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:09:00,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:00,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:00,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:00,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:00,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:00,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:09:00,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:00,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:00,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:00,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:00,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:00,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:09:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:00,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:00,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:00,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:09:00,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:00,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 03:09:00,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:00,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:00,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:00,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:09:00,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:00,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:09:00,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870891721] [2020-09-25 03:09:00,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:09:00,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:09:00,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446909915] [2020-09-25 03:09:00,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:09:00,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:00,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:09:00,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:09:00,242 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 6 states. [2020-09-25 03:09:00,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:00,350 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2020-09-25 03:09:00,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:09:00,351 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-09-25 03:09:00,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:00,353 INFO L225 Difference]: With dead ends: 46 [2020-09-25 03:09:00,353 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 03:09:00,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:09:00,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 03:09:00,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-09-25 03:09:00,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 03:09:00,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-09-25 03:09:00,363 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 25 [2020-09-25 03:09:00,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:00,363 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-09-25 03:09:00,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:09:00,364 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-09-25 03:09:00,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 03:09:00,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:00,366 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:00,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:09:00,366 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:00,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:00,367 INFO L82 PathProgramCache]: Analyzing trace with hash -852904039, now seen corresponding path program 1 times [2020-09-25 03:09:00,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:00,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684200923] [2020-09-25 03:09:00,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:00,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:00,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:00,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:00,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:00,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 03:09:00,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:00,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-09-25 03:09:00,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:00,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:09:00,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:09:00,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 03:09:00,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:00,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:00,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:00,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:00,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:00,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:00,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:00,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:00,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:00,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:00,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:00,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:00,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:09:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:00,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:00,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:01,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:01,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:09:01,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:01,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-25 03:09:01,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:01,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:09:01,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:01,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 03:09:01,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:01,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:01,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:01,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:01,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:01,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:01,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 03:09:01,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:01,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:01,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:01,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:09:01,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:01,141 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 03:09:01,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684200923] [2020-09-25 03:09:01,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:09:01,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 03:09:01,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267706692] [2020-09-25 03:09:01,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:09:01,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:01,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:09:01,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:09:01,145 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 9 states. [2020-09-25 03:09:01,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:01,335 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-09-25 03:09:01,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 03:09:01,336 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 03:09:01,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:01,337 INFO L225 Difference]: With dead ends: 56 [2020-09-25 03:09:01,338 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 03:09:01,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:09:01,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 03:09:01,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2020-09-25 03:09:01,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 03:09:01,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-09-25 03:09:01,349 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 35 [2020-09-25 03:09:01,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:01,349 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-09-25 03:09:01,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:09:01,349 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-09-25 03:09:01,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 03:09:01,351 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:01,351 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:01,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:09:01,352 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:01,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:01,352 INFO L82 PathProgramCache]: Analyzing trace with hash 2030561919, now seen corresponding path program 1 times [2020-09-25 03:09:01,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:01,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218510066] [2020-09-25 03:09:01,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:01,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:01,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:01,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:01,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:01,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 03:09:01,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:01,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-25 03:09:01,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:01,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:01,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:09:01,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 03:09:01,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:01,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:01,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:01,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:01,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:01,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:01,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:01,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:01,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:01,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:01,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:01,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:01,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:09:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:01,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:01,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:01,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:01,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:09:01,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:01,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 03:09:01,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:01,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:01,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:01,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 03:09:01,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:01,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:01,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:01,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:01,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:01,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:01,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 03:09:01,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:09:01,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:01,864 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 03:09:01,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218510066] [2020-09-25 03:09:01,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:09:01,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 03:09:01,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358586216] [2020-09-25 03:09:01,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:09:01,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:01,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:09:01,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:09:01,867 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 9 states. [2020-09-25 03:09:02,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:02,004 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2020-09-25 03:09:02,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:09:02,004 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 03:09:02,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:02,007 INFO L225 Difference]: With dead ends: 58 [2020-09-25 03:09:02,007 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 03:09:02,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:09:02,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 03:09:02,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 03:09:02,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 03:09:02,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-09-25 03:09:02,018 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 35 [2020-09-25 03:09:02,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:02,018 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-09-25 03:09:02,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:09:02,019 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-09-25 03:09:02,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 03:09:02,020 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:02,021 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:02,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:09:02,021 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:02,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:02,021 INFO L82 PathProgramCache]: Analyzing trace with hash -2122258312, now seen corresponding path program 1 times [2020-09-25 03:09:02,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:02,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394098156] [2020-09-25 03:09:02,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:02,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:02,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:02,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:02,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:02,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:02,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:02,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:09:02,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:09:02,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 711 [2020-09-25 03:09:02,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:02,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:09:02,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:09:02,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 03:09:02,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:02,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:02,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:02,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:02,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:02,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:02,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:02,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:02,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:02,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:02,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:02,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:02,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:09:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:02,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:02,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:02,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 03:09:02,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:02,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 03:09:02,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:02,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:09:02,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:02,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:09:02,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:02,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:02,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:02,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:02,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:09:02,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:02,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 03:09:02,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:02,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:02,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:02,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:09:02,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:02,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 03:09:02,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394098156] [2020-09-25 03:09:02,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:02,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:09:02,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595258467] [2020-09-25 03:09:02,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:09:02,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:02,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:09:02,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:09:02,960 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 9 states. [2020-09-25 03:09:03,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:03,133 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-09-25 03:09:03,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:09:03,134 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-09-25 03:09:03,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:03,135 INFO L225 Difference]: With dead ends: 61 [2020-09-25 03:09:03,136 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 03:09:03,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-09-25 03:09:03,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 03:09:03,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2020-09-25 03:09:03,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 03:09:03,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-09-25 03:09:03,145 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 36 [2020-09-25 03:09:03,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:03,145 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-09-25 03:09:03,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:09:03,146 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-09-25 03:09:03,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 03:09:03,147 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:03,148 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:03,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:09:03,148 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:03,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:03,149 INFO L82 PathProgramCache]: Analyzing trace with hash 404002040, now seen corresponding path program 1 times [2020-09-25 03:09:03,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:03,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416563459] [2020-09-25 03:09:03,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:03,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:03,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:03,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:03,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:03,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:04,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:04,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:09:04,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:09:04,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1450 [2020-09-25 03:09:04,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:04,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:09:04,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:09:04,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 03:09:04,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:04,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:04,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:04,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:04,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:04,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:04,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:09:04,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:04,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:04,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:09:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:04,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:04,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:04,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:04,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:04,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:04,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 03:09:04,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:09:04,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 03:09:04,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:04,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:09:04,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:04,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:09:04,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:04,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:04,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:05,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:05,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:09:05,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:05,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 03:09:05,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:05,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:05,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:05,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:09:05,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:05,109 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 03:09:05,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416563459] [2020-09-25 03:09:05,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:05,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:09:05,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646685330] [2020-09-25 03:09:05,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:09:05,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:05,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:09:05,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:09:05,112 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 10 states. [2020-09-25 03:09:05,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:05,409 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-09-25 03:09:05,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:09:05,410 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-09-25 03:09:05,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:05,411 INFO L225 Difference]: With dead ends: 61 [2020-09-25 03:09:05,411 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 03:09:05,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:09:05,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 03:09:05,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-25 03:09:05,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 03:09:05,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-09-25 03:09:05,427 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 36 [2020-09-25 03:09:05,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:05,430 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-09-25 03:09:05,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:09:05,430 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-09-25 03:09:05,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 03:09:05,436 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:05,436 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:05,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:09:05,437 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:05,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:05,438 INFO L82 PathProgramCache]: Analyzing trace with hash 594320754, now seen corresponding path program 1 times [2020-09-25 03:09:05,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:05,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269235836] [2020-09-25 03:09:05,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:05,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:05,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:05,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:05,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 03:09:05,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:05,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-09-25 03:09:05,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:05,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:09:05,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 03:09:05,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 03:09:05,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:05,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:05,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:05,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:05,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:05,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:05,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:05,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:05,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:05,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:05,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:05,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:05,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:09:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:05,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:05,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:06,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:06,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 03:09:06,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:06,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-25 03:09:06,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:06,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:09:06,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 03:09:06,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 03:09:06,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:06,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:06,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:06,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:06,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:06,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:09:06,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:06,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 03:09:06,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:09:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 03:09:06,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:06,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:06,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:06,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:06,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:06,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:06,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:09:06,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:06,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:06,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:06,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:09:06,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:06,382 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 03:09:06,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269235836] [2020-09-25 03:09:06,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:09:06,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 03:09:06,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296143195] [2020-09-25 03:09:06,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:09:06,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:06,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:09:06,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:09:06,385 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 10 states. [2020-09-25 03:09:06,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:06,623 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2020-09-25 03:09:06,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:09:06,624 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-09-25 03:09:06,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:06,625 INFO L225 Difference]: With dead ends: 76 [2020-09-25 03:09:06,626 INFO L226 Difference]: Without dead ends: 49 [2020-09-25 03:09:06,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:09:06,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-25 03:09:06,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-09-25 03:09:06,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-25 03:09:06,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-09-25 03:09:06,641 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 46 [2020-09-25 03:09:06,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:06,641 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-09-25 03:09:06,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:09:06,642 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-09-25 03:09:06,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 03:09:06,645 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:06,645 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:06,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:09:06,646 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:06,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:06,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1010225367, now seen corresponding path program 1 times [2020-09-25 03:09:06,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:06,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043581927] [2020-09-25 03:09:06,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:06,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:06,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:06,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:06,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:06,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:06,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:07,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:07,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:11,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:11,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 03:09:11,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:09:11,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4518 [2020-09-25 03:09:11,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:11,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 03:09:11,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:09:11,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 03:09:11,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:11,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:11,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:11,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:11,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:11,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:11,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:11,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:11,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:11,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:11,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:11,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:11,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:09:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:11,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:11,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:11,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 03:09:11,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:11,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-09-25 03:09:11,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:11,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 03:09:11,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:11,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 03:09:11,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:11,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:11,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:11,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:11,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 03:09:11,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:11,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 03:09:11,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:11,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 03:09:11,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:11,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:09:11,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:11,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:11,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:11,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:11,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:09:11,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:11,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 03:09:11,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:11,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:11,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:11,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:09:11,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:11,810 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 03:09:11,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043581927] [2020-09-25 03:09:11,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:11,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 03:09:11,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765963336] [2020-09-25 03:09:11,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 03:09:11,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:11,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 03:09:11,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-09-25 03:09:11,814 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 14 states. [2020-09-25 03:09:12,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:12,195 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2020-09-25 03:09:12,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 03:09:12,196 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2020-09-25 03:09:12,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:12,199 INFO L225 Difference]: With dead ends: 63 [2020-09-25 03:09:12,199 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 03:09:12,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2020-09-25 03:09:12,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 03:09:12,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2020-09-25 03:09:12,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 03:09:12,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-09-25 03:09:12,213 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 47 [2020-09-25 03:09:12,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:12,213 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-09-25 03:09:12,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 03:09:12,215 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-09-25 03:09:12,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 03:09:12,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:12,216 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:12,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:09:12,217 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:12,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:12,217 INFO L82 PathProgramCache]: Analyzing trace with hash 628814935, now seen corresponding path program 2 times [2020-09-25 03:09:12,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:12,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79618247] [2020-09-25 03:09:12,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:12,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:12,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:12,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:12,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:12,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:12,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:12,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:15,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:15,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 03:09:15,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:09:15,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2889 [2020-09-25 03:09:15,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:15,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:09:15,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:09:15,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 03:09:15,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:15,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:15,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:15,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:15,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:15,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:15,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:15,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:15,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:15,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:15,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:15,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:15,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:09:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:15,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:15,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:15,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 03:09:15,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:15,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 03:09:15,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:15,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 03:09:15,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:15,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 03:09:15,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:15,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:15,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:15,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:15,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 03:09:15,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:15,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 03:09:15,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:15,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:09:15,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:15,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:09:15,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:15,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:15,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:15,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:15,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:09:15,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:15,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 03:09:15,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:15,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:09:15,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:15,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:09:15,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:15,529 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 03:09:15,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79618247] [2020-09-25 03:09:15,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:15,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:09:15,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063993703] [2020-09-25 03:09:15,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:09:15,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:15,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:09:15,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:09:15,533 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 10 states. [2020-09-25 03:09:15,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:15,698 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2020-09-25 03:09:15,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:09:15,700 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-09-25 03:09:15,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:15,701 INFO L225 Difference]: With dead ends: 68 [2020-09-25 03:09:15,701 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 03:09:15,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:09:15,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 03:09:15,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2020-09-25 03:09:15,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-25 03:09:15,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2020-09-25 03:09:15,710 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 47 [2020-09-25 03:09:15,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:15,710 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2020-09-25 03:09:15,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:09:15,710 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2020-09-25 03:09:15,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 03:09:15,711 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:15,711 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:15,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 03:09:15,712 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:15,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:15,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1466875377, now seen corresponding path program 2 times [2020-09-25 03:09:15,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:15,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044331628] [2020-09-25 03:09:15,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:15,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:15,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:15,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:15,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:16,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:16,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:16,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:16,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:18,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:18,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 03:09:18,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:09:18,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3010 [2020-09-25 03:09:18,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:18,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 03:09:18,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:09:18,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 03:09:18,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:18,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:18,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:18,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:18,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:18,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:18,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:18,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:18,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:18,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:18,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:18,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:18,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:09:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:18,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:18,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:18,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 03:09:18,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:18,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-25 03:09:18,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:18,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:09:18,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:18,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 03:09:18,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:18,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:18,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:19,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:19,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 03:09:19,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:19,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 03:09:19,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:19,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:09:19,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:19,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:09:19,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:19,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:19,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:19,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:19,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:09:19,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:19,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 03:09:19,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:19,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:19,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:19,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:09:19,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:19,235 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 03:09:19,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044331628] [2020-09-25 03:09:19,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:19,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 03:09:19,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841622125] [2020-09-25 03:09:19,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:09:19,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:19,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:09:19,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:09:19,238 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand 12 states. [2020-09-25 03:09:19,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:19,582 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2020-09-25 03:09:19,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 03:09:19,582 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-09-25 03:09:19,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:19,583 INFO L225 Difference]: With dead ends: 73 [2020-09-25 03:09:19,583 INFO L226 Difference]: Without dead ends: 67 [2020-09-25 03:09:19,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-09-25 03:09:19,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-25 03:09:19,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 62. [2020-09-25 03:09:19,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 03:09:19,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2020-09-25 03:09:19,606 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 47 [2020-09-25 03:09:19,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:19,607 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2020-09-25 03:09:19,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:09:19,607 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2020-09-25 03:09:19,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 03:09:19,612 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:19,613 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:19,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 03:09:19,613 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:19,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:19,614 INFO L82 PathProgramCache]: Analyzing trace with hash -925145612, now seen corresponding path program 3 times [2020-09-25 03:09:19,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:19,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204886047] [2020-09-25 03:09:19,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:19,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:19,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:19,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:19,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:19,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:19,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:19,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:24,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:24,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 03:09:24,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 03:09:24,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 03:09:24,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:24,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 03:09:24,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:09:24,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 03:09:24,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:24,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:24,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:24,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:24,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:24,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:24,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:09:24,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:24,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:24,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:24,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:24,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:24,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:09:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:24,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:25,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:25,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 03:09:25,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:25,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-09-25 03:09:25,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:25,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 03:09:25,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:25,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 03:09:25,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:25,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:25,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:25,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:25,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 03:09:25,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:25,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-09-25 03:09:25,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:25,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 03:09:25,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:25,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 03:09:25,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:25,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:25,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:25,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:25,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 03:09:25,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:25,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 03:09:25,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:25,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:09:25,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:25,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:09:25,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:25,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:25,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:25,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:25,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:09:25,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:25,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 03:09:25,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:25,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:25,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:25,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:09:25,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:25,574 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 03:09:25,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204886047] [2020-09-25 03:09:25,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:25,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 03:09:25,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779592457] [2020-09-25 03:09:25,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:09:25,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:25,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:09:25,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:09:25,578 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand 13 states. [2020-09-25 03:09:25,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:25,853 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2020-09-25 03:09:25,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 03:09:25,853 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 58 [2020-09-25 03:09:25,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:25,854 INFO L225 Difference]: With dead ends: 73 [2020-09-25 03:09:25,854 INFO L226 Difference]: Without dead ends: 67 [2020-09-25 03:09:25,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2020-09-25 03:09:25,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-25 03:09:25,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2020-09-25 03:09:25,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 03:09:25,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-09-25 03:09:25,869 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 58 [2020-09-25 03:09:25,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:25,870 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-09-25 03:09:25,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:09:25,870 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-09-25 03:09:25,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 03:09:25,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:25,871 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:25,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 03:09:25,871 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:25,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:25,872 INFO L82 PathProgramCache]: Analyzing trace with hash 304923956, now seen corresponding path program 4 times [2020-09-25 03:09:25,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:25,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509159823] [2020-09-25 03:09:25,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:25,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:25,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:27,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:27,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:30,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:30,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 03:09:30,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 03:09:30,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 03:09:30,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:30,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 03:09:30,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:09:30,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 03:09:30,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:30,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:30,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:30,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:30,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:30,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:30,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:30,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:30,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:30,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:30,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:30,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:30,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:09:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:30,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:31,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:31,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 03:09:31,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:31,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-09-25 03:09:31,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:31,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 03:09:31,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:31,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 03:09:31,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:31,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:31,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:31,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:31,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 03:09:31,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:31,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 03:09:31,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:31,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 03:09:31,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:31,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 03:09:31,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:31,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:31,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:31,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:31,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 03:09:31,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:31,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 03:09:31,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:31,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 03:09:31,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:31,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:09:31,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:31,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:31,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:31,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:31,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:09:31,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:31,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 03:09:31,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:31,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:31,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:31,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:09:31,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:31,844 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 03:09:31,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509159823] [2020-09-25 03:09:31,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:31,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 03:09:31,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759098359] [2020-09-25 03:09:31,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 03:09:31,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:31,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 03:09:31,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:09:31,847 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 18 states. [2020-09-25 03:09:32,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:32,308 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2020-09-25 03:09:32,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 03:09:32,309 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 58 [2020-09-25 03:09:32,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:32,310 INFO L225 Difference]: With dead ends: 73 [2020-09-25 03:09:32,310 INFO L226 Difference]: Without dead ends: 67 [2020-09-25 03:09:32,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2020-09-25 03:09:32,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-25 03:09:32,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-09-25 03:09:32,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 03:09:32,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2020-09-25 03:09:32,327 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 58 [2020-09-25 03:09:32,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:32,328 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2020-09-25 03:09:32,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 03:09:32,328 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2020-09-25 03:09:32,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 03:09:32,329 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:32,329 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:32,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 03:09:32,329 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:32,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:32,330 INFO L82 PathProgramCache]: Analyzing trace with hash -609776486, now seen corresponding path program 5 times [2020-09-25 03:09:32,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:32,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692756561] [2020-09-25 03:09:32,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:32,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:32,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:32,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:32,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:32,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:32,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:32,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:32,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:32,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:32,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:37,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:37,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 03:09:37,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 03:09:37,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:09:37,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 03:09:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:09:37,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 03:09:37,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:37,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:37,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:37,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:37,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:37,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:37,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:37,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:37,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:37,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:37,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:37,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:37,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:09:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:37,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:37,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:37,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 03:09:37,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:37,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-09-25 03:09:37,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:37,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 03:09:37,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:37,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 03:09:37,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:37,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:37,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:37,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:37,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 03:09:37,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:37,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 03:09:37,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:37,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 03:09:37,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:37,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 03:09:37,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:37,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:37,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:38,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:38,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 03:09:38,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:38,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 03:09:38,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:38,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 03:09:38,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:38,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:09:38,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:38,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:38,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:38,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:38,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:09:38,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:38,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 03:09:38,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:38,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:38,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:38,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:09:38,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:38,223 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 13 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 03:09:38,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692756561] [2020-09-25 03:09:38,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:38,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 03:09:38,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568796703] [2020-09-25 03:09:38,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 03:09:38,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:38,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 03:09:38,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:09:38,225 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand 16 states. [2020-09-25 03:09:38,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:38,764 INFO L93 Difference]: Finished difference Result 83 states and 95 transitions. [2020-09-25 03:09:38,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 03:09:38,764 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-09-25 03:09:38,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:38,765 INFO L225 Difference]: With dead ends: 83 [2020-09-25 03:09:38,765 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 03:09:38,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2020-09-25 03:09:38,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 03:09:38,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2020-09-25 03:09:38,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 03:09:38,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2020-09-25 03:09:38,772 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 58 [2020-09-25 03:09:38,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:38,773 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2020-09-25 03:09:38,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 03:09:38,773 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2020-09-25 03:09:38,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 03:09:38,774 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:38,774 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:38,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 03:09:38,774 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:38,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:38,775 INFO L82 PathProgramCache]: Analyzing trace with hash -411905612, now seen corresponding path program 6 times [2020-09-25 03:09:38,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:38,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156919260] [2020-09-25 03:09:38,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:38,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:38,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:38,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:38,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:43,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:43,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 03:09:43,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 03:09:43,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 03:09:43,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:43,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 03:09:43,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:09:43,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 03:09:43,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:43,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:43,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:43,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:43,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:43,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:43,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:43,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:43,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:43,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:43,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:43,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:43,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:09:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:43,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:43,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:43,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:43,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:43,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking...