/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_2calls_8-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:10:25,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:10:25,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:10:25,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:10:25,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:10:25,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:10:25,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:10:25,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:10:25,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:10:25,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:10:25,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:10:25,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:10:25,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:10:25,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:10:25,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:10:25,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:10:25,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:10:25,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:10:25,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:10:25,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:10:25,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:10:25,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:10:25,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:10:25,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:10:25,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:10:25,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:10:25,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:10:25,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:10:25,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:10:25,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:10:25,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:10:25,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:10:25,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:10:25,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:10:25,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:10:25,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:10:25,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:10:25,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:10:25,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:10:25,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:10:25,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:10:25,861 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 03:10:25,888 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:10:25,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:10:25,889 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:10:25,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:10:25,890 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:10:25,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:10:25,890 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:10:25,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:10:25,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:10:25,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:10:25,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:10:25,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:10:25,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:10:25,892 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:10:25,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:10:25,892 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:10:25,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:10:25,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:10:25,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:10:25,893 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:10:25,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:10:25,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:10:25,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:10:25,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:10:25,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:10:25,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:10:25,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:10:25,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:10:25,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:10:25,895 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 03:10:26,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:10:26,403 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:10:26,407 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:10:26,409 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:10:26,410 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:10:26,411 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c [2020-09-25 03:10:26,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29b69e731/49a53b7e1e50452a87fa08d896807b58/FLAGe57800944 [2020-09-25 03:10:26,993 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:10:26,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c [2020-09-25 03:10:27,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29b69e731/49a53b7e1e50452a87fa08d896807b58/FLAGe57800944 [2020-09-25 03:10:27,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29b69e731/49a53b7e1e50452a87fa08d896807b58 [2020-09-25 03:10:27,341 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:10:27,348 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:10:27,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:10:27,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:10:27,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:10:27,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:10:27" (1/1) ... [2020-09-25 03:10:27,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b03ff29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:27, skipping insertion in model container [2020-09-25 03:10:27,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:10:27" (1/1) ... [2020-09-25 03:10:27,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:10:27,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:10:27,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:10:27,701 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:10:27,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:10:27,733 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:10:27,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:27 WrapperNode [2020-09-25 03:10:27,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:10:27,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:10:27,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:10:27,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:10:27,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:27" (1/1) ... [2020-09-25 03:10:27,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:27" (1/1) ... [2020-09-25 03:10:27,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:27" (1/1) ... [2020-09-25 03:10:27,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:27" (1/1) ... [2020-09-25 03:10:27,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:27" (1/1) ... [2020-09-25 03:10:27,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:27" (1/1) ... [2020-09-25 03:10:27,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:27" (1/1) ... [2020-09-25 03:10:27,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:10:27,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:10:27,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:10:27,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:10:27,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:27" (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 03:10:27,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:10:27,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:10:27,938 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 03:10:27,938 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 03:10:27,938 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:10:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:10:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:10:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 03:10:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 03:10:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:10:27,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:10:27,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:10:28,184 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:10:28,185 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:10:28,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:10:28 BoogieIcfgContainer [2020-09-25 03:10:28,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:10:28,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:10:28,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:10:28,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:10:28,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:10:27" (1/3) ... [2020-09-25 03:10:28,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6baaca7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:10:28, skipping insertion in model container [2020-09-25 03:10:28,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:27" (2/3) ... [2020-09-25 03:10:28,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6baaca7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:10:28, skipping insertion in model container [2020-09-25 03:10:28,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:10:28" (3/3) ... [2020-09-25 03:10:28,202 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-1.c [2020-09-25 03:10:28,223 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:10:28,236 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:10:28,263 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:10:28,300 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:10:28,301 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:10:28,301 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:10:28,301 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:10:28,301 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:10:28,301 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:10:28,302 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:10:28,302 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:10:28,329 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 03:10:28,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 03:10:28,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:28,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:28,341 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:28,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:28,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 03:10:28,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:28,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688427070] [2020-09-25 03:10:28,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:28,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:28,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:28,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:10:28,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:28,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 03:10:28,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:28,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:28,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:28,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:28,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:10:28,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:28,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:28,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:28,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:28,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:28,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:10:28,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:28,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:28,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:28,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:28,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:28,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:28,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:28,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:28,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:28,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:28,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 03:10:28,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:28,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:28,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:28,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:28,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:28,690 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 03:10:28,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688427070] [2020-09-25 03:10:28,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:28,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:10:28,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323334168] [2020-09-25 03:10:28,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:10:28,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:28,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:10:28,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:10:28,720 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 03:10:28,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:28,858 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 03:10:28,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:10:28,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 03:10:28,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:28,874 INFO L225 Difference]: With dead ends: 58 [2020-09-25 03:10:28,874 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 03:10:28,879 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 03:10:28,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 03:10:28,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 03:10:28,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 03:10:28,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 03:10:28,944 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 03:10:28,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:28,944 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 03:10:28,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:10:28,945 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 03:10:28,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 03:10:28,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:28,948 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 03:10:28,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:10:28,948 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:28,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:28,949 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 03:10:28,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:28,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490578451] [2020-09-25 03:10:28,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:28,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:29,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:29,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 03:10:29,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:29,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 03:10:29,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:29,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:29,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:29,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:29,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:29,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:29,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:29,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:29,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:29,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:29,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:10:29,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:29,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:29,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:29,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:29,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:29,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:29,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:29,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:29,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:29,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:29,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 03:10:29,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:29,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:29,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:29,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:10:29,237 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 03:10:29,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490578451] [2020-09-25 03:10:29,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:29,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:10:29,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941727579] [2020-09-25 03:10:29,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:10:29,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:29,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:10:29,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:10:29,241 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 03:10:29,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:29,316 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 03:10:29,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:10:29,317 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 03:10:29,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:29,319 INFO L225 Difference]: With dead ends: 50 [2020-09-25 03:10:29,319 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 03:10:29,321 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 03:10:29,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 03:10:29,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 03:10:29,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 03:10:29,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 03:10:29,335 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 03:10:29,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:29,336 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 03:10:29,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:10:29,336 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 03:10:29,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:10:29,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:29,338 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:29,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:10:29,339 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:29,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:29,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 03:10:29,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:29,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669009581] [2020-09-25 03:10:29,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:29,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:29,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:29,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:29,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:29,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 03:10:29,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:29,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-09-25 03:10:30,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:30,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:30,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:30,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 03:10:30,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:10:30,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:30,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:30,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:30,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:30,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:10:30,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:30,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:30,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:30,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:30,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:30,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:30,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:30,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:10:30,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:30,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-09-25 03:10:30,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:30,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:30,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:30,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:10:30,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:30,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:30,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:30,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:30,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:30,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:10:30,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:30,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:30,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:30,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:30,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:30,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:30,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:30,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:30,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:30,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:10:30,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:30,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:30,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:30,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:30,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:30,463 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 03:10:30,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669009581] [2020-09-25 03:10:30,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:30,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:10:30,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023741149] [2020-09-25 03:10:30,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:10:30,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:30,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:10:30,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:10:30,469 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 03:10:30,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:30,642 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2020-09-25 03:10:30,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:10:30,643 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 03:10:30,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:30,645 INFO L225 Difference]: With dead ends: 69 [2020-09-25 03:10:30,646 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 03:10:30,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:10:30,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 03:10:30,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-09-25 03:10:30,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 03:10:30,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2020-09-25 03:10:30,670 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 33 [2020-09-25 03:10:30,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:30,671 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2020-09-25 03:10:30,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:10:30,671 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2020-09-25 03:10:30,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 03:10:30,676 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:30,677 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:30,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:10:30,677 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:30,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:30,678 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 03:10:30,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:30,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423463501] [2020-09-25 03:10:30,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:30,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:31,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 03:10:31,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:31,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 602 [2020-09-25 03:10:31,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:31,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:31,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:31,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:10:31,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:31,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:31,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:31,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:31,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:31,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:10:31,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:31,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:31,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:31,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:31,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:31,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:31,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:31,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:10:31,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:31,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-09-25 03:10:31,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:31,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:31,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:31,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:10:31,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:31,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:31,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:31,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:31,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:31,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 03:10:31,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:31,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:31,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:31,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:10:31,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:31,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:31,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:31,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:31,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:31,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:10:31,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:31,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:31,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:31,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:31,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:31,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 03:10:31,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423463501] [2020-09-25 03:10:31,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:31,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:10:31,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621192640] [2020-09-25 03:10:31,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:10:31,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:31,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:10:31,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:10:31,970 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand 7 states. [2020-09-25 03:10:32,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:32,093 INFO L93 Difference]: Finished difference Result 85 states and 110 transitions. [2020-09-25 03:10:32,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:10:32,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 03:10:32,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:32,097 INFO L225 Difference]: With dead ends: 85 [2020-09-25 03:10:32,097 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 03:10:32,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:10:32,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 03:10:32,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2020-09-25 03:10:32,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 03:10:32,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2020-09-25 03:10:32,113 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 35 [2020-09-25 03:10:32,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:32,113 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2020-09-25 03:10:32,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:10:32,113 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2020-09-25 03:10:32,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 03:10:32,116 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:32,117 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:32,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:10:32,117 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:32,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:32,118 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 03:10:32,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:32,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2906132] [2020-09-25 03:10:32,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:32,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:37,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:10:37,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:10:37,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:10:37,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:37,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:37,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:37,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:10:37,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:37,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:37,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:37,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:37,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:37,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:37,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:37,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:37,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:37,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:37,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:37,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:37,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:39,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:40,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:40,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:10:40,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:10:40,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3631 [2020-09-25 03:10:40,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:40,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:40,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:40,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:10:40,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:40,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:40,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:40,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:40,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:41,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:41,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:10:41,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:41,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-09-25 03:10:41,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:10:41,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:41,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:10:41,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 26 [2020-09-25 03:10:41,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:41,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:41,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:41,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:41,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:41,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:10:41,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:41,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:41,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:41,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:41,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:41,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:41,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:41,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:41,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:41,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:41,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:10:41,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:41,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:41,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:41,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:41,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:41,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 03:10:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:41,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:41,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:41,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:41,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:41,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:10:41,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:41,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:41,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:41,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:41,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:41,213 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 03:10:41,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2906132] [2020-09-25 03:10:41,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:41,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:10:41,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578185144] [2020-09-25 03:10:41,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:10:41,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:41,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:10:41,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:10:41,217 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand 9 states. [2020-09-25 03:10:41,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:41,472 INFO L93 Difference]: Finished difference Result 99 states and 138 transitions. [2020-09-25 03:10:41,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:10:41,473 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-25 03:10:41,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:41,476 INFO L225 Difference]: With dead ends: 99 [2020-09-25 03:10:41,476 INFO L226 Difference]: Without dead ends: 93 [2020-09-25 03:10:41,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:10:41,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-25 03:10:41,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2020-09-25 03:10:41,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 03:10:41,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 109 transitions. [2020-09-25 03:10:41,493 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 109 transitions. Word has length 51 [2020-09-25 03:10:41,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:41,494 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 109 transitions. [2020-09-25 03:10:41,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:10:41,494 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 109 transitions. [2020-09-25 03:10:41,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 03:10:41,498 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:41,498 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:41,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:10:41,498 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:41,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:41,499 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 03:10:41,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:41,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956508721] [2020-09-25 03:10:41,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:41,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:41,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:41,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:41,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:41,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:41,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:42,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:44,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:46,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:46,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:46,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:46,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:46,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 03:10:46,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 03:10:46,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 03:10:46,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 03:10:46,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:46,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:46,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:46,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:46,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:46,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:46,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:10:46,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:46,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:46,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:46,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:46,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:46,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:46,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:46,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:46,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:46,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:46,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:46,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:49,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:49,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:51,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:51,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 03:10:51,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:10:51,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:10:51,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:51,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:10:51,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 03:10:51,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 03:10:51,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:51,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:51,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:51,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:51,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:51,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:51,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:51,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-25 03:10:51,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:51,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:51,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:51,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:10:51,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:51,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:51,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:51,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:51,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:51,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:51,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:10:51,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:51,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:51,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:51,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:51,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:51,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:51,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:51,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:51,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:51,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:51,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:10:51,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:51,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:51,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:51,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:51,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:51,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:10:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:51,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:51,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:51,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:52,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:52,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:52,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:52,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-09-25 03:10:52,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:10:52,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:52,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:52,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:52,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:52,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:52,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:52,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:10:52,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:52,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:52,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:52,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:52,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:52,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:52,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:52,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:52,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:52,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:52,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:10:52,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:52,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:52,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:52,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:52,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:52,196 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-25 03:10:52,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956508721] [2020-09-25 03:10:52,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:52,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:10:52,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104461744] [2020-09-25 03:10:52,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:10:52,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:52,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:10:52,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:10:52,198 INFO L87 Difference]: Start difference. First operand 81 states and 109 transitions. Second operand 10 states. [2020-09-25 03:10:52,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:52,544 INFO L93 Difference]: Finished difference Result 183 states and 289 transitions. [2020-09-25 03:10:52,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 03:10:52,546 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-09-25 03:10:52,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:52,548 INFO L225 Difference]: With dead ends: 183 [2020-09-25 03:10:52,548 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 03:10:52,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:10:52,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 03:10:52,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 71. [2020-09-25 03:10:52,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-25 03:10:52,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 86 transitions. [2020-09-25 03:10:52,575 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 86 transitions. Word has length 69 [2020-09-25 03:10:52,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:52,575 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 86 transitions. [2020-09-25 03:10:52,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:10:52,576 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 86 transitions. [2020-09-25 03:10:52,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 03:10:52,579 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:52,580 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:52,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:10:52,580 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:52,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:52,580 INFO L82 PathProgramCache]: Analyzing trace with hash 261409208, now seen corresponding path program 2 times [2020-09-25 03:10:52,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:52,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858423727] [2020-09-25 03:10:52,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:52,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:52,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:52,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:52,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:52,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:52,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:56,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:57,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 03:10:57,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:10:57,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 03:10:57,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:57,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:57,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:57,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 03:10:57,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:57,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:57,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:57,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:57,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:57,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:57,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:57,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:57,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:57,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:57,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:57,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:57,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:59,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:59,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:59,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:02,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:02,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 03:11:02,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:11:02,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 03:11:02,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:02,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:11:02,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:11:02,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 03:11:02,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:02,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:02,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:02,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:02,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:02,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:02,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:11:02,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:11:02,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 03:11:02,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:11:02,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:02,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:11:02,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:02,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:02,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:02,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:02,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:02,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:02,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:11:02,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:02,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:02,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:02,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:02,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:02,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:02,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:02,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:02,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:02,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:02,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:11:02,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:02,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:02,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:02,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:02,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:02,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 03:11:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:02,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:02,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:02,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:02,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:11:02,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:11:02,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 03:11:02,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:02,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:11:02,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:02,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:11:02,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:02,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:02,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:02,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:02,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:02,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:02,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 03:11:02,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:02,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:11:02,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:02,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:11:02,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:02,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:02,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:02,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:02,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:03,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:03,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:11:03,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:03,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:11:03,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:03,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:03,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:03,007 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 03:11:03,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858423727] [2020-09-25 03:11:03,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:11:03,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 03:11:03,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572679317] [2020-09-25 03:11:03,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:11:03,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:03,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:11:03,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:11:03,010 INFO L87 Difference]: Start difference. First operand 71 states and 86 transitions. Second operand 8 states. [2020-09-25 03:11:03,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:11:03,184 INFO L93 Difference]: Finished difference Result 103 states and 135 transitions. [2020-09-25 03:11:03,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:11:03,185 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-09-25 03:11:03,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:11:03,189 INFO L225 Difference]: With dead ends: 103 [2020-09-25 03:11:03,189 INFO L226 Difference]: Without dead ends: 97 [2020-09-25 03:11:03,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:11:03,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-25 03:11:03,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 89. [2020-09-25 03:11:03,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-09-25 03:11:03,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 117 transitions. [2020-09-25 03:11:03,216 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 117 transitions. Word has length 70 [2020-09-25 03:11:03,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:11:03,217 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 117 transitions. [2020-09-25 03:11:03,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:11:03,217 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 117 transitions. [2020-09-25 03:11:03,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 03:11:03,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:03,221 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2020-09-25 03:11:03,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:11:03,224 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:03,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:03,224 INFO L82 PathProgramCache]: Analyzing trace with hash 2103958142, now seen corresponding path program 1 times [2020-09-25 03:11:03,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:03,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322058111] [2020-09-25 03:11:03,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:03,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:08,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 03:11:08,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 03:11:08,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 03:11:08,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:08,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:11:08,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:11:08,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 03:11:08,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:08,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:08,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:08,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:08,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:08,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:11:08,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:08,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:08,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:08,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:08,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:08,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:11:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:08,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:09,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:09,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:09,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:10,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:10,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:10,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:11,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:11,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:11,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:11,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:12,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:13,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 03:11:13,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-09-25 03:11:13,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 03:11:13,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:13,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 03:11:13,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 03:11:13,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 03:11:13,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:13,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:13,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:15,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:15,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:11:15,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 03:11:15,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1894 [2020-09-25 03:11:15,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:15,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:11:15,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:15,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 03:11:15,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:11:15,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:15,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:15,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:15,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:15,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:11:15,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:11:15,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 03:11:15,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:15,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:11:15,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:15,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:11:15,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:15,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:15,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:15,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:15,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:15,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:15,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:11:15,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:15,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:15,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:15,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:15,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:15,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:11:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:15,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:15,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:15,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:15,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:15,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:11:15,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:15,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:15,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:15,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:15,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:15,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 03:11:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:15,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:15,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:15,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:15,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:15,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:11:15,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 03:11:15,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:15,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:11:15,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:15,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:11:15,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:15,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 03:11:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:15,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:15,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:15,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:15,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:15,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:15,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:16,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:16,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 03:11:16,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:11:16,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 881 [2020-09-25 03:11:16,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:16,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:11:16,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:11:16,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 03:11:16,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:16,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:16,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:16,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:16,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:16,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:16,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:11:16,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:11:16,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-25 03:11:16,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:16,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:11:16,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:16,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:11:16,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:16,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:16,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:16,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:16,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:16,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:16,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:11:16,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:16,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:11:16,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:16,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:16,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:16,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:11:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:16,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:16,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:16,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:16,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:16,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:11:16,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:16,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:11:16,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:16,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:16,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:16,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 03:11:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:16,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:16,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:16,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:16,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:16,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:11:16,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:16,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:11:16,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:16,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:11:16,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:16,650 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 55 proven. 33 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-09-25 03:11:16,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322058111] [2020-09-25 03:11:16,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:11:16,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 03:11:16,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527157242] [2020-09-25 03:11:16,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 03:11:16,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:16,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 03:11:16,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:11:16,653 INFO L87 Difference]: Start difference. First operand 89 states and 117 transitions. Second operand 15 states. [2020-09-25 03:11:17,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:11:17,064 INFO L93 Difference]: Finished difference Result 168 states and 240 transitions. [2020-09-25 03:11:17,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:11:17,065 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 102 [2020-09-25 03:11:17,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:11:17,067 INFO L225 Difference]: With dead ends: 168 [2020-09-25 03:11:17,067 INFO L226 Difference]: Without dead ends: 85 [2020-09-25 03:11:17,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-09-25 03:11:17,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-25 03:11:17,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2020-09-25 03:11:17,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-25 03:11:17,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 100 transitions. [2020-09-25 03:11:17,079 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 100 transitions. Word has length 102 [2020-09-25 03:11:17,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:11:17,080 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 100 transitions. [2020-09-25 03:11:17,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 03:11:17,080 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 100 transitions. [2020-09-25 03:11:17,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-25 03:11:17,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:17,082 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:11:17,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:11:17,082 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:17,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:17,083 INFO L82 PathProgramCache]: Analyzing trace with hash 307755032, now seen corresponding path program 1 times [2020-09-25 03:11:17,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:17,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657233553] [2020-09-25 03:11:17,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:17,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:17,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:17,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:17,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:17,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:18,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:18,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:21,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:21,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:22,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:22,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-25 03:11:22,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:11:22,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:11:22,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:22,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:11:22,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:11:22,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 03:11:22,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:22,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:22,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:22,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:22,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:22,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:22,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:11:22,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:22,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:22,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:22,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:22,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:22,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:11:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:22,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:22,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:22,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:22,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking...