/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:09:22,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:09:22,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:09:22,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:09:22,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:09:22,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:09:22,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:09:23,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:09:23,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:09:23,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:09:23,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:09:23,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:09:23,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:09:23,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:09:23,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:09:23,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:09:23,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:09:23,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:09:23,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:09:23,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:09:23,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:09:23,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:09:23,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:09:23,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:09:23,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:09:23,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:09:23,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:09:23,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:09:23,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:09:23,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:09:23,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:09:23,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:09:23,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:09:23,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:09:23,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:09:23,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:09:23,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:09:23,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:09:23,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:09:23,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:09:23,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:09:23,054 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 03:09:23,109 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:09:23,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:09:23,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:09:23,112 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:09:23,112 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:09:23,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:09:23,113 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:09:23,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:09:23,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:09:23,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:09:23,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:09:23,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:09:23,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:09:23,115 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:09:23,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:09:23,116 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:09:23,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:09:23,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:09:23,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:09:23,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:09:23,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:09:23,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:09:23,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:09:23,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:09:23,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:09:23,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:09:23,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:09:23,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:09:23,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:09:23,119 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-09-25 03:09:23,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:09:23,682 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:09:23,689 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:09:23,692 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:09:23,692 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:09:23,694 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_25-2.c [2020-09-25 03:09:23,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68e845e99/8604d2bc5b554cee8027c3396e56c54b/FLAGae2cd4e5e [2020-09-25 03:09:24,323 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:09:24,324 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_25-2.c [2020-09-25 03:09:24,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68e845e99/8604d2bc5b554cee8027c3396e56c54b/FLAGae2cd4e5e [2020-09-25 03:09:24,673 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68e845e99/8604d2bc5b554cee8027c3396e56c54b [2020-09-25 03:09:24,689 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:09:24,698 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:09:24,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:09:24,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:09:24,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:09:24,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:09:24" (1/1) ... [2020-09-25 03:09:24,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d4521a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:24, skipping insertion in model container [2020-09-25 03:09:24,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:09:24" (1/1) ... [2020-09-25 03:09:24,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:09:24,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:09:24,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:09:24,982 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:09:25,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:09:25,023 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:09:25,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:25 WrapperNode [2020-09-25 03:09:25,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:09:25,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:09:25,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:09:25,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:09:25,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:25" (1/1) ... [2020-09-25 03:09:25,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:25" (1/1) ... [2020-09-25 03:09:25,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:25" (1/1) ... [2020-09-25 03:09:25,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:25" (1/1) ... [2020-09-25 03:09:25,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:25" (1/1) ... [2020-09-25 03:09:25,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:25" (1/1) ... [2020-09-25 03:09:25,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:25" (1/1) ... [2020-09-25 03:09:25,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:09:25,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:09:25,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:09:25,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:09:25,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:09:25,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:09:25,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:09:25,208 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 03:09:25,209 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:09:25,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:09:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:09:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 03:09:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:09:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:09:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:09:25,526 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:09:25,527 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:09:25,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:09:25 BoogieIcfgContainer [2020-09-25 03:09:25,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:09:25,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:09:25,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:09:25,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:09:25,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:09:24" (1/3) ... [2020-09-25 03:09:25,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52522039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:09:25, skipping insertion in model container [2020-09-25 03:09:25,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:25" (2/3) ... [2020-09-25 03:09:25,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52522039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:09:25, skipping insertion in model container [2020-09-25 03:09:25,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:09:25" (3/3) ... [2020-09-25 03:09:25,555 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_25-2.c [2020-09-25 03:09:25,564 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:09:25,572 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:09:25,593 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:09:25,624 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:09:25,624 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:09:25,624 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:09:25,624 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:09:25,624 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:09:25,625 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:09:25,625 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:09:25,625 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:09:25,646 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 03:09:25,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 03:09:25,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:25,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:25,656 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:25,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:25,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 03:09:25,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:25,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079849031] [2020-09-25 03:09:25,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:25,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:25,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:25,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:09:25,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:25,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 03:09:25,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:25,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:25,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:09:25,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:09:25,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:09:25,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:25,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:25,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:25,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:25,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:25,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:09:25,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:25,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:25,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:25,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:25,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:25,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:25,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:25,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:25,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:25,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:25,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 03:09:25,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:25,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:25,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:25,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:25,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:25,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:09:25,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079849031] [2020-09-25 03:09:25,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:09:25,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:09:25,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427053319] [2020-09-25 03:09:25,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:09:25,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:26,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:09:26,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:09:26,017 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 03:09:26,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:26,138 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 03:09:26,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:09:26,140 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 03:09:26,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:26,153 INFO L225 Difference]: With dead ends: 44 [2020-09-25 03:09:26,153 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 03:09:26,157 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 03:09:26,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 03:09:26,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 03:09:26,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 03:09:26,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 03:09:26,216 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 03:09:26,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:26,217 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 03:09:26,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:09:26,217 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 03:09:26,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 03:09:26,220 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:26,220 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 03:09:26,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:09:26,221 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:26,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:26,222 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 03:09:26,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:26,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705464100] [2020-09-25 03:09:26,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:26,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:26,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 03:09:26,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:26,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 03:09:26,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:26,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:26,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:09:26,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:26,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:26,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:26,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:26,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:26,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:26,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:09:26,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:26,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:26,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:26,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:26,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:26,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:26,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:26,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:26,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:26,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 03:09:26,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:26,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:26,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:26,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:26,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:09:26,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705464100] [2020-09-25 03:09:26,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:09:26,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:09:26,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750861562] [2020-09-25 03:09:26,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:09:26,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:26,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:09:26,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:09:26,498 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 03:09:26,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:26,569 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 03:09:26,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:09:26,570 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 03:09:26,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:26,572 INFO L225 Difference]: With dead ends: 36 [2020-09-25 03:09:26,572 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 03:09:26,573 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 03:09:26,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 03:09:26,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 03:09:26,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 03:09:26,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 03:09:26,583 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 03:09:26,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:26,583 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 03:09:26,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:09:26,584 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 03:09:26,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:09:26,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:26,586 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 03:09:26,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:09:26,586 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:26,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:26,587 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 03:09:26,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:26,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33640358] [2020-09-25 03:09:26,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:26,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:27,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:27,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 03:09:27,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:27,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-09-25 03:09:27,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:27,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:27,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:09:27,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 03:09:27,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:27,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:27,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:27,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:27,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:27,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:27,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:09:27,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:27,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:27,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:27,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:27,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:27,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:27,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:27,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:27,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:27,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:27,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:09:27,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:27,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-09-25 03:09:27,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:27,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:27,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:27,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:09:27,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:27,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:27,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:27,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:27,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:27,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:27,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:09:27,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:27,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:27,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:09:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:27,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:27,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:27,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:27,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:27,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:09:27,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:27,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:27,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:27,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:27,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 03:09:27,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33640358] [2020-09-25 03:09:27,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:27,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:09:27,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536535937] [2020-09-25 03:09:27,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:09:27,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:27,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:09:27,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:09:27,610 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-25 03:09:27,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:27,708 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2020-09-25 03:09:27,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:09:27,709 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 03:09:27,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:27,711 INFO L225 Difference]: With dead ends: 62 [2020-09-25 03:09:27,712 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 03:09:27,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:09:27,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 03:09:27,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-09-25 03:09:27,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 03:09:27,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 03:09:27,723 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 33 [2020-09-25 03:09:27,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:27,724 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 03:09:27,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:09:27,725 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 03:09:27,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 03:09:27,727 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:27,727 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 03:09:27,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:09:27,728 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:27,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:27,728 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 03:09:27,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:27,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887126068] [2020-09-25 03:09:27,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:27,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:27,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:27,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:28,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 03:09:28,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:09:28,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-09-25 03:09:28,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:09:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:09:28,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:28,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:28,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:28,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:28,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:28,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:28,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:28,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:28,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:28,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:28,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:28,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:09:28,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:09:28,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 598 [2020-09-25 03:09:28,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:28,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:28,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:28,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:09:28,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:28,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:28,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:28,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:28,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:28,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 03:09:28,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:28,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:28,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:28,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:09:28,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:29,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:29,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:29,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:29,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:29,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:29,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:09:29,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:29,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:29,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:29,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:29,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:29,045 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 03:09:29,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887126068] [2020-09-25 03:09:29,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:29,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:09:29,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813073734] [2020-09-25 03:09:29,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:09:29,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:29,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:09:29,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:09:29,051 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 7 states. [2020-09-25 03:09:29,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:29,193 INFO L93 Difference]: Finished difference Result 94 states and 129 transitions. [2020-09-25 03:09:29,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:09:29,194 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 03:09:29,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:29,198 INFO L225 Difference]: With dead ends: 94 [2020-09-25 03:09:29,198 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 03:09:29,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:09:29,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 03:09:29,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-09-25 03:09:29,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 03:09:29,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2020-09-25 03:09:29,217 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 35 [2020-09-25 03:09:29,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:29,218 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2020-09-25 03:09:29,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:09:29,218 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2020-09-25 03:09:29,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 03:09:29,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:29,221 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 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 03:09:29,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:09:29,222 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:29,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:29,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-25 03:09:29,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:29,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215140711] [2020-09-25 03:09:29,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:29,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:29,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:29,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:29,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:29,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:29,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:29,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:34,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:09:34,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:09:34,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 03:09:34,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:34,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:34,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:09:34,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:09:34,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:34,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:34,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:34,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:34,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:34,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:09:34,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:34,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:34,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:34,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:34,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:34,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:34,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:37,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:37,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:09:37,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:09:37,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2982 [2020-09-25 03:09:37,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:37,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:37,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:37,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:09:37,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:37,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:37,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:37,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:37,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:37,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:09:37,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:37,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 03:09:37,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:37,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:09:37,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:37,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:09:37,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:37,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:37,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:37,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:37,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:37,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:37,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:09:37,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:37,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:37,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:37,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:37,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:37,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:09:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:37,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:37,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:37,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:37,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:37,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:09:37,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:37,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:37,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:37,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:37,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:37,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 03:09:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:37,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:37,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:37,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:37,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:37,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:09:37,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:37,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:37,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:37,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:37,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:37,489 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 03:09:37,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215140711] [2020-09-25 03:09:37,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:37,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 03:09:37,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079037801] [2020-09-25 03:09:37,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:09:37,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:37,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:09:37,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:09:37,493 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand 8 states. [2020-09-25 03:09:37,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:37,679 INFO L93 Difference]: Finished difference Result 108 states and 148 transitions. [2020-09-25 03:09:37,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:09:37,680 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-09-25 03:09:37,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:37,682 INFO L225 Difference]: With dead ends: 108 [2020-09-25 03:09:37,682 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 03:09:37,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:09:37,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 03:09:37,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 46. [2020-09-25 03:09:37,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-25 03:09:37,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-09-25 03:09:37,709 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 51 [2020-09-25 03:09:37,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:37,709 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-09-25 03:09:37,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:09:37,716 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-09-25 03:09:37,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 03:09:37,718 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:37,719 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 03:09:37,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:09:37,719 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:37,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:37,720 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-25 03:09:37,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:37,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266186363] [2020-09-25 03:09:37,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:37,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:37,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:37,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:39,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 03:09:39,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:39,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1656 [2020-09-25 03:09:39,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:39,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:39,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:09:39,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:09:39,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:39,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:39,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:39,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:39,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:39,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:39,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:39,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:39,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:39,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:39,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 03:09:39,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:39,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:41,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:41,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:09:41,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:41,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1600 [2020-09-25 03:09:41,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:41,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:41,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:41,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 03:09:41,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:41,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:41,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:41,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:41,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:09:41,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:41,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 03:09:41,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:41,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:41,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:41,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:09:41,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:41,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:41,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:41,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:41,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:41,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:41,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:09:41,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:41,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:41,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:41,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:41,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:41,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:41,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:41,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:41,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:41,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:41,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:09:41,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:41,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:41,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:41,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:41,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:41,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:09:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:41,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:41,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:41,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:41,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:41,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 03:09:41,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:41,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:41,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:41,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:09:41,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:41,225 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 03:09:41,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266186363] [2020-09-25 03:09:41,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:41,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:09:41,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160981733] [2020-09-25 03:09:41,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:09:41,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:41,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:09:41,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:09:41,229 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 7 states. [2020-09-25 03:09:41,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:41,422 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2020-09-25 03:09:41,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:09:41,426 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-25 03:09:41,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:41,429 INFO L225 Difference]: With dead ends: 62 [2020-09-25 03:09:41,429 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 03:09:41,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:09:41,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 03:09:41,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2020-09-25 03:09:41,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 03:09:41,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2020-09-25 03:09:41,455 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 52 [2020-09-25 03:09:41,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:41,455 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2020-09-25 03:09:41,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:09:41,456 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2020-09-25 03:09:41,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 03:09:41,464 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:41,465 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 03:09:41,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:09:41,465 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:41,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:41,466 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 3 times [2020-09-25 03:09:41,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:41,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658752587] [2020-09-25 03:09:41,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:41,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:41,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:41,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:41,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:41,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:41,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:42,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:42,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:46,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:46,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 03:09:46,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 03:09:46,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 03:09:46,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:46,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:09:46,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:09:46,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 03:09:46,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:46,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:46,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:46,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:46,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:46,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:46,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:46,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:46,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:46,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:46,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:46,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:46,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:46,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:46,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:46,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:46,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:46,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:46,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:47,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:47,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:47,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:48,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:51,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:51,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:51,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 03:09:51,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 03:09:51,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 03:09:51,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:51,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:09:51,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 03:09:51,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 03:09:51,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:51,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:51,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:51,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:51,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:51,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:09:51,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:51,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 03:09:51,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:51,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:51,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:51,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:09:51,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:51,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:51,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:51,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:51,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:51,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:51,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 03:09:51,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:51,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:51,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:51,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:09:51,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:51,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:51,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:51,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:51,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:51,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:51,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:09:51,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:51,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:51,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:51,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:51,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:51,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:09:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:51,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:51,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:51,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:51,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:51,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:54,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:54,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:09:54,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:09:54,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2437 [2020-09-25 03:09:54,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:54,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:54,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:54,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 03:09:54,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:54,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:54,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:54,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:54,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:54,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:54,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:09:54,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:54,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-25 03:09:54,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:09:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:09:54,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:54,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:54,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:54,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:54,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:54,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:54,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:54,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 03:09:54,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:54,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:54,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:54,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:09:54,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:54,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:54,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:54,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:54,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:54,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:54,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:09:54,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:54,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:54,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:54,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:54,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:54,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:09:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:54,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:54,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:54,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:54,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:54,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:09:54,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:54,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:54,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:54,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:54,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:54,743 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 78 proven. 67 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-09-25 03:09:54,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658752587] [2020-09-25 03:09:54,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:54,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:09:54,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694015150] [2020-09-25 03:09:54,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:09:54,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:54,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:09:54,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:09:54,746 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand 9 states. [2020-09-25 03:09:55,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:55,038 INFO L93 Difference]: Finished difference Result 125 states and 171 transitions. [2020-09-25 03:09:55,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:09:55,038 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-09-25 03:09:55,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:55,040 INFO L225 Difference]: With dead ends: 125 [2020-09-25 03:09:55,040 INFO L226 Difference]: Without dead ends: 83 [2020-09-25 03:09:55,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:09:55,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-25 03:09:55,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 61. [2020-09-25 03:09:55,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 03:09:55,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2020-09-25 03:09:55,066 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 87 [2020-09-25 03:09:55,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:55,067 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2020-09-25 03:09:55,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:09:55,067 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2020-09-25 03:09:55,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-25 03:09:55,072 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:55,072 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:55,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:09:55,074 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:55,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:55,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1607002557, now seen corresponding path program 4 times [2020-09-25 03:09:55,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:55,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826074436] [2020-09-25 03:09:55,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:55,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:55,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:55,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:55,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:55,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:55,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:55,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:56,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:57,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:57,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:57,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:57,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:57,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:57,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:57,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:57,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:00,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:00,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 03:10:00,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-09-25 03:10:00,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 03:10:00,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:00,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:10:00,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:00,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-25 03:10:00,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:00,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:00,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:00,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:00,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:00,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:00,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:00,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:00,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:00,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:00,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:00,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:00,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:00,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:00,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:00,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:00,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:00,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:00,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:00,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:00,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:00,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:00,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:01,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:01,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:05,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 03:10:05,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 03:10:05,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 03:10:05,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:05,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 03:10:05,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 03:10:05,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 03:10:05,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:05,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:05,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:07,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:07,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 03:10:07,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:10:07,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1966 [2020-09-25 03:10:07,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:07,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:07,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:07,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:10:07,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:07,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:07,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:07,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:07,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:07,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:10:07,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:07,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 03:10:07,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:07,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:10:07,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:07,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:07,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:07,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:07,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:07,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:07,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:10:07,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:07,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:07,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:07,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:07,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:07,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:07,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:07,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:07,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:07,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:07,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:10:07,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:07,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:07,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:07,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:07,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:07,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 03:10:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:07,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:07,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:07,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:07,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:07,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:10:07,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:07,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:07,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:07,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:07,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:07,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 03:10:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:07,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:07,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:07,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:07,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:07,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:07,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:08,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:08,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:08,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:11,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:11,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:12,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:12,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 03:10:12,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 03:10:12,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 03:10:12,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:12,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 03:10:12,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:12,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 03:10:12,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:12,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:12,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:12,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:12,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:12,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:12,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:12,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:13,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:13,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 03:10:13,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:10:13,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 938 [2020-09-25 03:10:13,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:13,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:10:13,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:13,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:10:13,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:13,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:13,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:13,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:13,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:13,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:13,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:10:13,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:13,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-25 03:10:13,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:13,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:13,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:13,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:10:13,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:13,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:13,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:13,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:13,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:13,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:13,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:10:13,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:13,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:13,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:13,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:13,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:13,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:13,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:13,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:13,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:13,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:13,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:10:13,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:13,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:13,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:13,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:13,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:13,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 03:10:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:13,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:13,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:13,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:13,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:13,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:10:13,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:13,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:13,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:13,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:13,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:13,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 03:10:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:13,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:13,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:13,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:13,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:13,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:10:13,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:13,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:13,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:13,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:13,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:13,713 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 200 proven. 70 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-09-25 03:10:13,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826074436] [2020-09-25 03:10:13,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:13,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 03:10:13,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859468329] [2020-09-25 03:10:13,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:10:13,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:13,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:10:13,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:10:13,716 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand 13 states. [2020-09-25 03:10:13,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:13,943 INFO L93 Difference]: Finished difference Result 109 states and 138 transitions. [2020-09-25 03:10:13,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:10:13,945 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 119 [2020-09-25 03:10:13,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:13,946 INFO L225 Difference]: With dead ends: 109 [2020-09-25 03:10:13,946 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 03:10:13,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:10:13,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 03:10:13,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-25 03:10:13,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 03:10:13,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2020-09-25 03:10:13,969 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 119 [2020-09-25 03:10:13,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:13,970 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2020-09-25 03:10:13,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:10:13,970 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2020-09-25 03:10:13,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 03:10:13,975 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:13,975 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 03:10:13,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:10:13,976 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:13,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:13,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 5 times [2020-09-25 03:10:13,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:13,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056699900] [2020-09-25 03:10:13,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:14,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:14,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:14,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:14,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:14,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:14,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:14,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:14,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:14,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:15,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking...