/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=NARROWEST --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-simple/fibo_7-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:02:58,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:02:58,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:02:58,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:02:58,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:02:58,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:02:58,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:02:58,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:02:58,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:02:58,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:02:58,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:02:58,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:02:58,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:02:58,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:02:58,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:02:58,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:02:58,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:02:58,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:02:58,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:02:58,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:02:58,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:02:58,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:02:58,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:02:58,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:02:58,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:02:58,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:02:58,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:02:58,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:02:58,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:02:58,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:02:58,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:02:58,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:02:58,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:02:58,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:02:58,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:02:58,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:02:58,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:02:58,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:02:58,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:02:58,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:02:58,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:02:58,627 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 02:02:58,677 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:02:58,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:02:58,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:02:58,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:02:58,679 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:02:58,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:02:58,680 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:02:58,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:02:58,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:02:58,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:02:58,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:02:58,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:02:58,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:02:58,682 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:02:58,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:02:58,683 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:02:58,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:02:58,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:02:58,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:02:58,684 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:02:58,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:02:58,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:02:58,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:02:58,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:02:58,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:02:58,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:02:58,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:02:58,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:02:58,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:02:58,686 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:02:59,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:02:59,124 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:02:59,129 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:02:59,130 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:02:59,131 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:02:59,132 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_7-2.c [2020-09-25 02:02:59,217 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35502847a/bc45f44092b347ffa32278b06ba77fb6/FLAGee196fbe3 [2020-09-25 02:02:59,735 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:02:59,736 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_7-2.c [2020-09-25 02:02:59,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35502847a/bc45f44092b347ffa32278b06ba77fb6/FLAGee196fbe3 [2020-09-25 02:03:00,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35502847a/bc45f44092b347ffa32278b06ba77fb6 [2020-09-25 02:03:00,077 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:03:00,081 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:03:00,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:03:00,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:03:00,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:03:00,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:03:00" (1/1) ... [2020-09-25 02:03:00,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1585d1f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:00, skipping insertion in model container [2020-09-25 02:03:00,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:03:00" (1/1) ... [2020-09-25 02:03:00,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:03:00,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:03:00,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:03:00,353 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:03:00,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:03:00,391 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:03:00,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:00 WrapperNode [2020-09-25 02:03:00,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:03:00,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:03:00,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:03:00,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:03:00,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:00" (1/1) ... [2020-09-25 02:03:00,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:00" (1/1) ... [2020-09-25 02:03:00,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:00" (1/1) ... [2020-09-25 02:03:00,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:00" (1/1) ... [2020-09-25 02:03:00,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:00" (1/1) ... [2020-09-25 02:03:00,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:00" (1/1) ... [2020-09-25 02:03:00,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:00" (1/1) ... [2020-09-25 02:03:00,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:03:00,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:03:00,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:03:00,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:03:00,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:00" (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 02:03:00,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:03:00,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:03:00,578 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 02:03:00,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:03:00,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:03:00,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:03:00,579 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 02:03:00,579 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:03:00,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:03:00,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:03:00,789 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:03:00,792 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:03:00,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:03:00 BoogieIcfgContainer [2020-09-25 02:03:00,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:03:00,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:03:00,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:03:00,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:03:00,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:03:00" (1/3) ... [2020-09-25 02:03:00,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d19dfca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:03:00, skipping insertion in model container [2020-09-25 02:03:00,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:00" (2/3) ... [2020-09-25 02:03:00,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d19dfca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:03:00, skipping insertion in model container [2020-09-25 02:03:00,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:03:00" (3/3) ... [2020-09-25 02:03:00,830 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_7-2.c [2020-09-25 02:03:00,855 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:03:00,875 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:03:00,907 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:03:00,940 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:03:00,940 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:03:00,940 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:03:00,940 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:03:00,941 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:03:00,941 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:03:00,941 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:03:00,941 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:03:00,960 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 02:03:00,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 02:03:00,967 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:00,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:00,969 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:00,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:00,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 02:03:00,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:00,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752234227] [2020-09-25 02:03:00,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:01,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:01,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 02:03:01,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:03:01,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-25 02:03:01,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:01,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:03:01,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:01,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:03:01,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:03:01,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:01,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:01,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:01,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:01,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:03:01,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:01,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:01,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:01,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:01,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:01,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:01,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:01,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:01,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:01,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:03:01,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:01,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:03:01,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:01,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:01,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:01,434 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 02:03:01,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752234227] [2020-09-25 02:03:01,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:03:01,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:03:01,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637822187] [2020-09-25 02:03:01,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:03:01,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:01,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:03:01,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:03:01,467 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 02:03:01,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:01,571 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 02:03:01,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:03:01,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 02:03:01,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:01,587 INFO L225 Difference]: With dead ends: 44 [2020-09-25 02:03:01,587 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 02:03:01,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:03:01,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 02:03:01,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 02:03:01,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 02:03:01,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 02:03:01,648 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 02:03:01,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:01,649 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 02:03:01,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:03:01,649 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 02:03:01,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 02:03:01,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:01,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:01,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:03:01,652 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:01,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:01,653 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 02:03:01,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:01,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065428431] [2020-09-25 02:03:01,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:01,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:01,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 02:03:01,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:03:01,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 02:03:01,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:01,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:03:01,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 02:03:01,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:01,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:03:01,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:01,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:01,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:01,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:01,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:03:01,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:01,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:01,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:01,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:01,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:01,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:01,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:01,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:01,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:01,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 02:03:01,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:01,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:03:01,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:01,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:01,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:01,983 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 02:03:01,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065428431] [2020-09-25 02:03:01,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:03:01,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:03:01,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935621623] [2020-09-25 02:03:01,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:03:01,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:01,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:03:01,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:03:01,993 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 02:03:02,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:02,042 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 02:03:02,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:03:02,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 02:03:02,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:02,047 INFO L225 Difference]: With dead ends: 36 [2020-09-25 02:03:02,047 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:03:02,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:03:02,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:03:02,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 02:03:02,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 02:03:02,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 02:03:02,056 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 02:03:02,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:02,056 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 02:03:02,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:03:02,057 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 02:03:02,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 02:03:02,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:02,059 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 02:03:02,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:03:02,059 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:02,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:02,060 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 02:03:02,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:02,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199883925] [2020-09-25 02:03:02,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:02,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:02,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:02,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:02,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:03,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:03,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 02:03:03,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:03:03,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1887 [2020-09-25 02:03:03,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:03,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:03,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:03:03,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:03,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:03,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:03,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:03,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:03,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:03,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:03,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:03:03,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:03,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:03,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:03,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:03,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:03,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:03,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:04,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 02:03:04,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:04,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 02:03:04,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:04,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:04,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 02:03:04,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:04,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:04,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:04,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:04,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:04,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:04,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:03:04,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:04,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:03:04,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:04,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:04,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:04,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:03:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:04,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:04,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:04,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:04,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:03:04,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:04,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:04,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:03:04,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:04,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:04,118 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 02:03:04,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199883925] [2020-09-25 02:03:04,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:04,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 02:03:04,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706545591] [2020-09-25 02:03:04,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:03:04,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:04,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:03:04,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:03:04,128 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-09-25 02:03:04,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:04,272 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-09-25 02:03:04,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:03:04,273 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 02:03:04,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:04,274 INFO L225 Difference]: With dead ends: 52 [2020-09-25 02:03:04,274 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:03:04,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:03:04,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:03:04,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 02:03:04,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 02:03:04,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 02:03:04,295 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2020-09-25 02:03:04,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:04,298 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 02:03:04,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:03:04,298 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 02:03:04,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 02:03:04,300 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:04,300 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 02:03:04,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:03:04,301 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:04,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:04,302 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-25 02:03:04,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:04,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669297110] [2020-09-25 02:03:04,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:04,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:05,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:05,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 02:03:05,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:03:05,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 987 [2020-09-25 02:03:05,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:05,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:03:05,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:05,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:03:05,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:05,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:05,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:05,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:05,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:05,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:05,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:03:05,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:05,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:05,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:05,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:05,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:05,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:05,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:05,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:05,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:05,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:03:05,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:03:05,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-09-25 02:03:05,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:05,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:03:05,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:05,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:03:05,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:05,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:05,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:05,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:05,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:05,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:05,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:03:05,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:03:05,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:05,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:05,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:05,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:03:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:05,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:05,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:05,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:05,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:05,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:03:05,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:05,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:05,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:05,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:05,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:05,698 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 02:03:05,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669297110] [2020-09-25 02:03:05,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:05,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 02:03:05,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116672437] [2020-09-25 02:03:05,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:03:05,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:05,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:03:05,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:03:05,705 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2020-09-25 02:03:05,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:05,805 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-09-25 02:03:05,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:03:05,808 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-09-25 02:03:05,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:05,814 INFO L225 Difference]: With dead ends: 42 [2020-09-25 02:03:05,814 INFO L226 Difference]: Without dead ends: 36 [2020-09-25 02:03:05,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:03:05,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-25 02:03:05,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-09-25 02:03:05,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 02:03:05,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-25 02:03:05,832 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 34 [2020-09-25 02:03:05,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:05,833 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-25 02:03:05,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:03:05,834 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-25 02:03:05,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 02:03:05,835 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:05,836 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] [2020-09-25 02:03:05,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:03:05,836 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:05,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:05,837 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 02:03:05,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:05,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662909174] [2020-09-25 02:03:05,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:05,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:05,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:05,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:06,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:06,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:07,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:07,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 02:03:07,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:03:07,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1630 [2020-09-25 02:03:07,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:07,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:03:07,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:07,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:03:07,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:03:07,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:07,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:07,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:07,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:07,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:07,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:03:07,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:07,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:07,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:07,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:07,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:07,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:07,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:07,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:07,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:07,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:07,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:07,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:03:07,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:03:07,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-09-25 02:03:07,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:07,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:03:07,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:03:07,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:03:07,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:07,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:07,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:07,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:07,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:07,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:07,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 02:03:07,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:07,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:03:07,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:07,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:03:07,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:08,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:03:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:08,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:08,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:08,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:08,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:08,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:03:08,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 02:03:08,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:08,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:03:08,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:08,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:08,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 02:03:08,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662909174] [2020-09-25 02:03:08,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:08,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 02:03:08,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733969231] [2020-09-25 02:03:08,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:03:08,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:08,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:03:08,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:03:08,092 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 8 states. [2020-09-25 02:03:08,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:08,238 INFO L93 Difference]: Finished difference Result 74 states and 96 transitions. [2020-09-25 02:03:08,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:03:08,239 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-09-25 02:03:08,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:08,241 INFO L225 Difference]: With dead ends: 74 [2020-09-25 02:03:08,241 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 02:03:08,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:03:08,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 02:03:08,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-25 02:03:08,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 02:03:08,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 02:03:08,251 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 35 [2020-09-25 02:03:08,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:08,251 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 02:03:08,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:03:08,252 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 02:03:08,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 02:03:08,254 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:08,254 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:08,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:03:08,254 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:08,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:08,255 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-25 02:03:08,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:08,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442055929] [2020-09-25 02:03:08,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:08,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:08,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:08,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:09,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:13,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:13,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 02:03:13,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:03:13,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 02:03:13,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:13,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:03:13,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:13,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 02:03:13,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:13,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:13,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:13,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:13,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:13,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:13,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:03:13,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:13,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:13,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:13,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:13,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:13,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:13,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:13,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:13,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:15,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:15,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:03:15,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:03:15,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1836 [2020-09-25 02:03:15,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:15,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:03:15,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:15,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:03:15,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:15,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:15,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:15,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:15,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:15,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:03:15,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:03:15,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-25 02:03:15,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:15,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:03:15,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:15,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:03:15,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:15,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:15,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:15,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:15,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:15,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:15,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:03:15,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:15,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:15,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:15,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:03:15,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:15,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:03:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:15,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:15,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:15,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:15,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:15,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:03:15,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:15,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:03:15,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:15,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:15,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:15,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:03:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:15,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:15,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:15,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:15,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:15,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:03:15,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:15,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:03:15,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:15,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:15,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:15,484 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 28 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 02:03:15,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442055929] [2020-09-25 02:03:15,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:15,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 02:03:15,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560777717] [2020-09-25 02:03:15,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:03:15,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:15,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:03:15,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:03:15,487 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 8 states. [2020-09-25 02:03:15,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:15,731 INFO L93 Difference]: Finished difference Result 104 states and 142 transitions. [2020-09-25 02:03:15,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:03:15,732 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-09-25 02:03:15,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:15,734 INFO L225 Difference]: With dead ends: 104 [2020-09-25 02:03:15,734 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 02:03:15,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:03:15,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 02:03:15,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 60. [2020-09-25 02:03:15,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 02:03:15,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 78 transitions. [2020-09-25 02:03:15,762 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 78 transitions. Word has length 52 [2020-09-25 02:03:15,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:15,763 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 78 transitions. [2020-09-25 02:03:15,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:03:15,767 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 78 transitions. [2020-09-25 02:03:15,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 02:03:15,774 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:15,774 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:15,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:03:15,775 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:15,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:15,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1108116753, now seen corresponding path program 3 times [2020-09-25 02:03:15,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:15,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781724832] [2020-09-25 02:03:15,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:15,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:15,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:15,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:15,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:15,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:16,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:16,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:16,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:16,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:16,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:17,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:17,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:17,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:17,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:17,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:20,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 02:03:20,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 02:03:20,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 02:03:20,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:20,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:03:20,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:20,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 02:03:20,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:20,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:20,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:20,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:20,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:20,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:03:20,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:20,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:20,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:20,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:20,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:20,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:20,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:21,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:21,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:21,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:21,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:21,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:23,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:23,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:23,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:23,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:24,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:25,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:25,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:25,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 02:03:25,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 02:03:25,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 02:03:25,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:25,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:03:25,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-25 02:03:25,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 02:03:25,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:25,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:25,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:25,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:25,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:25,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:25,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:27,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:27,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 02:03:27,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:03:27,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1142 [2020-09-25 02:03:27,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:27,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:27,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:27,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:27,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:27,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:27,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:27,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:27,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:03:27,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:27,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:03:27,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:27,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:27,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:27,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:27,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:27,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:27,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:27,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:27,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:27,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:27,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:27,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:03:27,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:27,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:27,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:03:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:27,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:27,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:27,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:27,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:27,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:03:27,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:27,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:27,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:27,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:27,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:27,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:03:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:27,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:27,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:27,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:27,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:27,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:03:27,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:27,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:27,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:27,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:27,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:27,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 02:03:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:27,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:27,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:27,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:27,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:27,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:27,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:27,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:27,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:27,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:32,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:32,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 02:03:32,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 02:03:32,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 02:03:32,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:03:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 02:03:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 02:03:32,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:32,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:32,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:32,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:32,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:32,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:33,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:33,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 02:03:33,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:03:33,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-09-25 02:03:33,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:33,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:03:33,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:03:33,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 02:03:33,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:33,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:33,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:33,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:33,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:33,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:33,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:03:33,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:03:33,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-25 02:03:33,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:33,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:03:33,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:33,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:03:33,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:33,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:33,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:33,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:33,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:33,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:33,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:03:33,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 02:03:33,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:33,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:33,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:33,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:03:33,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:33,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:03:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:33,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:33,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:33,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:33,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:33,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:03:33,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:33,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:03:33,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:33,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:33,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:33,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:03:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:33,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:33,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:33,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:33,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:33,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:03:33,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:33,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:03:33,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:33,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:33,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:33,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 02:03:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:33,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:33,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:33,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:33,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:33,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:03:33,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:33,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:33,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 02:03:33,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:33,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:33,443 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 207 proven. 27 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2020-09-25 02:03:33,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781724832] [2020-09-25 02:03:33,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:33,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 02:03:33,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189828278] [2020-09-25 02:03:33,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:03:33,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:33,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:03:33,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:03:33,446 INFO L87 Difference]: Start difference. First operand 60 states and 78 transitions. Second operand 10 states. [2020-09-25 02:03:33,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:33,586 INFO L93 Difference]: Finished difference Result 115 states and 163 transitions. [2020-09-25 02:03:33,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 02:03:33,586 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 121 [2020-09-25 02:03:33,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:33,588 INFO L225 Difference]: With dead ends: 115 [2020-09-25 02:03:33,588 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 02:03:33,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-09-25 02:03:33,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 02:03:33,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-25 02:03:33,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 02:03:33,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2020-09-25 02:03:33,602 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 121 [2020-09-25 02:03:33,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:33,602 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2020-09-25 02:03:33,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:03:33,602 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2020-09-25 02:03:33,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 02:03:33,604 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:33,604 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:33,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:03:33,605 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:33,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:33,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 4 times [2020-09-25 02:03:33,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:33,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979125609] [2020-09-25 02:03:33,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:33,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:33,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:33,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:33,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:33,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:33,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:33,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:34,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:34,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:35,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:35,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:38,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:38,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 02:03:38,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 02:03:38,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 02:03:38,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:38,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:03:38,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:38,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 02:03:38,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:38,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:38,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:38,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:38,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:38,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:38,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:03:38,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:38,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:38,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:38,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:38,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:38,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:38,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:38,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:38,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:38,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:41,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:41,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:41,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:41,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:41,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:43,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:43,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 02:03:43,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 02:03:43,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 02:03:43,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:43,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:03:43,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 02:03:43,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:03:43,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:43,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:43,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:43,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:43,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:03:43,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:43,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:03:43,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:43,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:43,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:43,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:43,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:43,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:43,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:43,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:43,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:03:43,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:43,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:03:43,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:43,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:43,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:43,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:43,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:43,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:43,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:43,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:03:43,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:43,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:43,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:43,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:43,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:43,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:03:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:43,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:43,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:43,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:43,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:43,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:03:43,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:43,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:43,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:43,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:43,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:43,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:03:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:43,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:43,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:43,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:43,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:43,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:03:43,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:43,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:43,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:43,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:43,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:43,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:03:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:43,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:43,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:43,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:43,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:43,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:45,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:45,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 02:03:45,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:03:45,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1790 [2020-09-25 02:03:45,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:45,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:03:45,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:03:45,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:03:45,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:45,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:45,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:45,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:45,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:45,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:45,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:45,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:48,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:48,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:03:48,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:03:48,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3260 [2020-09-25 02:03:48,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:48,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:03:48,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:48,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:03:48,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:48,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:48,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:48,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:48,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:49,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:49,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:03:49,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:03:49,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-25 02:03:49,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:49,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:03:49,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:49,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:03:49,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:49,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:49,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:49,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:49,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:49,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:49,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:03:49,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:49,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:49,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:49,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:03:49,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:49,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:03:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:49,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:49,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:49,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:49,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:49,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:03:49,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:49,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:03:49,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:49,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:49,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:49,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:03:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:49,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:49,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:49,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:49,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:49,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:03:49,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:03:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:49,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:49,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:03:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:49,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:49,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:49,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:49,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:49,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:03:49,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:49,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:03:49,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:49,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:49,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:49,236 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 240 proven. 40 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2020-09-25 02:03:49,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979125609] [2020-09-25 02:03:49,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:49,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 02:03:49,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966180125] [2020-09-25 02:03:49,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 02:03:49,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:49,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 02:03:49,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:03:49,238 INFO L87 Difference]: Start difference. First operand 63 states and 77 transitions. Second operand 12 states. [2020-09-25 02:03:49,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:49,501 INFO L93 Difference]: Finished difference Result 134 states and 188 transitions. [2020-09-25 02:03:49,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:03:49,504 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 123 [2020-09-25 02:03:49,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:49,509 INFO L225 Difference]: With dead ends: 134 [2020-09-25 02:03:49,509 INFO L226 Difference]: Without dead ends: 80 [2020-09-25 02:03:49,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:03:49,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-25 02:03:49,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 72. [2020-09-25 02:03:49,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 02:03:49,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2020-09-25 02:03:49,535 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 123 [2020-09-25 02:03:49,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:49,535 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2020-09-25 02:03:49,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 02:03:49,536 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2020-09-25 02:03:49,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 02:03:49,540 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:49,540 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:49,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:03:49,541 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:49,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:49,541 INFO L82 PathProgramCache]: Analyzing trace with hash 866676589, now seen corresponding path program 5 times [2020-09-25 02:03:49,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:49,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688389195] [2020-09-25 02:03:49,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:49,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:49,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:49,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:49,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:51,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:54,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:54,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 02:03:54,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:03:54,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:03:54,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:54,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:03:54,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:54,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 02:03:54,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:54,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:54,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:54,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:54,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:54,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:54,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:03:54,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:54,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:54,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:54,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:54,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:54,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:54,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:54,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:54,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:54,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:54,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking...