/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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/id_o100.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:01:56,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:01:56,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:01:56,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:01:56,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:01:56,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:01:56,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:01:56,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:01:56,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:01:56,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:01:56,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:01:56,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:01:56,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:01:56,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:01:56,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:01:56,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:01:56,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:01:56,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:01:56,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:01:56,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:01:56,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:01:56,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:01:56,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:01:56,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:01:56,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:01:56,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:01:56,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:01:56,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:01:56,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:01:56,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:01:56,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:01:56,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:01:56,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:01:56,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:01:56,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:01:56,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:01:56,860 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:01:56,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:01:56,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:01:56,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:01:56,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:01:56,864 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 10:01:56,890 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:01:56,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:01:56,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:01:56,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:01:56,892 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:01:56,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:01:56,893 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:01:56,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:01:56,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:01:56,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:01:56,894 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:01:56,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:01:56,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:01:56,894 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:01:56,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:01:56,895 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:01:56,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:01:56,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:01:56,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:01:56,898 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:01:56,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:01:56,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:01:56,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:01:56,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:01:56,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:01:56,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:01:56,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:01:56,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:01:56,903 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:01:56,904 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:01:57,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:01:57,397 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:01:57,402 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:01:57,404 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:01:57,406 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:01:57,407 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o100.c [2020-09-25 10:01:57,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/732a4d48d/3f743286394748c9bd5cd8d7f9605645/FLAG64c1ee668 [2020-09-25 10:01:58,037 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:01:58,038 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_o100.c [2020-09-25 10:01:58,044 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/732a4d48d/3f743286394748c9bd5cd8d7f9605645/FLAG64c1ee668 [2020-09-25 10:01:58,398 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/732a4d48d/3f743286394748c9bd5cd8d7f9605645 [2020-09-25 10:01:58,413 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:01:58,419 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:01:58,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:01:58,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:01:58,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:01:58,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:01:58" (1/1) ... [2020-09-25 10:01:58,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@447ed8f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:58, skipping insertion in model container [2020-09-25 10:01:58,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:01:58" (1/1) ... [2020-09-25 10:01:58,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:01:58,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:01:58,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:01:58,684 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:01:58,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:01:58,720 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:01:58,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:58 WrapperNode [2020-09-25 10:01:58,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:01:58,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:01:58,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:01:58,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:01:58,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:58" (1/1) ... [2020-09-25 10:01:58,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:58" (1/1) ... [2020-09-25 10:01:58,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:58" (1/1) ... [2020-09-25 10:01:58,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:58" (1/1) ... [2020-09-25 10:01:58,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:58" (1/1) ... [2020-09-25 10:01:58,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:58" (1/1) ... [2020-09-25 10:01:58,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:58" (1/1) ... [2020-09-25 10:01:58,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:01:58,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:01:58,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:01:58,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:01:58,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:58" (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 10:01:58,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:01:58,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:01:58,927 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 10:01:58,927 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:01:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 10:01:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:01:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 10:01:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:01:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:01:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:01:59,122 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:01:59,123 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 10:01:59,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:01:59 BoogieIcfgContainer [2020-09-25 10:01:59,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:01:59,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:01:59,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:01:59,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:01:59,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:01:58" (1/3) ... [2020-09-25 10:01:59,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d17597f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:01:59, skipping insertion in model container [2020-09-25 10:01:59,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:58" (2/3) ... [2020-09-25 10:01:59,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d17597f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:01:59, skipping insertion in model container [2020-09-25 10:01:59,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:01:59" (3/3) ... [2020-09-25 10:01:59,138 INFO L109 eAbstractionObserver]: Analyzing ICFG id_o100.c [2020-09-25 10:01:59,150 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:01:59,161 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:01:59,187 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:01:59,228 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:01:59,229 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:01:59,231 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:01:59,231 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:01:59,231 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:01:59,231 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:01:59,231 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:01:59,232 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:01:59,274 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-25 10:01:59,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 10:01:59,283 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:59,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:59,285 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:59,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:59,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1651991454, now seen corresponding path program 1 times [2020-09-25 10:01:59,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:59,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233097663] [2020-09-25 10:01:59,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:59,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:59,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:59,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:01:59,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:59,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 10:01:59,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:59,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:59,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:01:59,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:01:59,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:01:59,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:01:59,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:59,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:59,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:59,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:59,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:59,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:01:59,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:59,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:59,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:59,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:59,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:59,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:59,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 10:01:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:59,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:59,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:59,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:59,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:59,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:01:59,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:59,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:59,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:01:59,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:59,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:01:59,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:59,684 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 10:01:59,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233097663] [2020-09-25 10:01:59,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:01:59,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:01:59,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584940448] [2020-09-25 10:01:59,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:01:59,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:59,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:01:59,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:01:59,716 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-25 10:01:59,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:59,793 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-25 10:01:59,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:01:59,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 10:01:59,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:59,810 INFO L225 Difference]: With dead ends: 37 [2020-09-25 10:01:59,811 INFO L226 Difference]: Without dead ends: 22 [2020-09-25 10:01:59,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:01:59,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-25 10:01:59,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-25 10:01:59,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-25 10:01:59,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-25 10:01:59,870 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2020-09-25 10:01:59,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:59,871 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-25 10:01:59,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:01:59,871 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-25 10:01:59,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 10:01:59,875 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:59,875 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:59,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:01:59,876 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:59,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:59,877 INFO L82 PathProgramCache]: Analyzing trace with hash 189324707, now seen corresponding path program 1 times [2020-09-25 10:01:59,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:59,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093136576] [2020-09-25 10:01:59,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:59,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:00,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:00,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:02:00,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:00,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-25 10:02:00,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:00,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:00,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:02:00,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 10:02:00,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:02:00,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:00,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:02:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:00,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:00,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:00,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:02:00,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:00,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:02:00,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:00,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:00,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:00,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:00,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:00,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:00,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 10:02:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:00,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:00,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:00,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:02:00,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:00,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 10:02:00,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:00,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:00,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:02:00,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:00,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:02:00,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:00,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:00,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:00,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:00,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:02:00,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:00,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:02:00,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:00,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:00,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:02:00,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:00,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:02:00,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:00,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 10:02:00,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093136576] [2020-09-25 10:02:00,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:02:00,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:02:00,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125100256] [2020-09-25 10:02:00,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:02:00,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:02:00,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:02:00,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:02:00,392 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2020-09-25 10:02:00,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:02:00,462 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-25 10:02:00,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:02:00,463 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-25 10:02:00,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:02:00,464 INFO L225 Difference]: With dead ends: 31 [2020-09-25 10:02:00,464 INFO L226 Difference]: Without dead ends: 26 [2020-09-25 10:02:00,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:02:00,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-25 10:02:00,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-25 10:02:00,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-25 10:02:00,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-25 10:02:00,474 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2020-09-25 10:02:00,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:02:00,475 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-25 10:02:00,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:02:00,476 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-25 10:02:00,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 10:02:00,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:02:00,477 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] [2020-09-25 10:02:00,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:02:00,478 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:02:00,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:02:00,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1416732684, now seen corresponding path program 2 times [2020-09-25 10:02:00,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:02:00,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423760274] [2020-09-25 10:02:00,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:02:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:00,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:00,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:00,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 10:02:00,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:00,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-09-25 10:02:00,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:00,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:02:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 10:02:00,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:02:00,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:00,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:02:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:00,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:00,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:00,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:02:00,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:00,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:02:00,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:00,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:00,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:00,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:00,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:00,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:00,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 10:02:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:00,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:00,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:00,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 10:02:00,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:00,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 10:02:00,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:00,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:00,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:02:00,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:00,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:02:00,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:01,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:01,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:01,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:01,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:02:01,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:01,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 10:02:01,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:01,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:01,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:02:01,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:01,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:02:01,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:02:01,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:01,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:01,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:01,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:02:01,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:01,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 10:02:01,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:01,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:01,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:02:01,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:01,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:02:01,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:02:01,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423760274] [2020-09-25 10:02:01,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:02:01,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:02:01,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880656723] [2020-09-25 10:02:01,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:02:01,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:02:01,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:02:01,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:02:01,214 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-09-25 10:02:01,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:02:01,321 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-09-25 10:02:01,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:02:01,322 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-25 10:02:01,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:02:01,325 INFO L225 Difference]: With dead ends: 35 [2020-09-25 10:02:01,325 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 10:02:01,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:02:01,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 10:02:01,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 10:02:01,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 10:02:01,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-25 10:02:01,338 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 30 [2020-09-25 10:02:01,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:02:01,338 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-25 10:02:01,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:02:01,339 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-25 10:02:01,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 10:02:01,341 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:02:01,342 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:02:01,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:02:01,342 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:02:01,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:02:01,343 INFO L82 PathProgramCache]: Analyzing trace with hash -209476043, now seen corresponding path program 3 times [2020-09-25 10:02:01,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:02:01,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164394455] [2020-09-25 10:02:01,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:02:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:01,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:01,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:01,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 10:02:01,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:01,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-09-25 10:02:01,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:01,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:01,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:02:01,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 10:02:01,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:02:01,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:01,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:02:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:01,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:01,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:01,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:02:01,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:01,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:02:01,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:01,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:01,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:01,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:01,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:01,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:01,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 10:02:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:01,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:01,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:01,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 10:02:01,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:01,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 10:02:01,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:01,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:01,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:02:01,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:01,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 10:02:01,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:01,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:02,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:02,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:02,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 10:02:02,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:02,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 10:02:02,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:02,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:02,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:02:02,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:02,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:02:02,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:02,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:02,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:02,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:02,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:02:02,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:02,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 10:02:02,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:02,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:02,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:02:02,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:02,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:02:02,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:02,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:02,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:02,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:02,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:02:02,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:02,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:02:02,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:02,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:02,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:02:02,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:02,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:02:02,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:02:02,308 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 10:02:02,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164394455] [2020-09-25 10:02:02,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:02:02,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:02:02,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517782298] [2020-09-25 10:02:02,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:02:02,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:02:02,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:02:02,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:02:02,313 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-09-25 10:02:02,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:02:02,448 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 10:02:02,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:02:02,448 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-09-25 10:02:02,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:02:02,450 INFO L225 Difference]: With dead ends: 39 [2020-09-25 10:02:02,450 INFO L226 Difference]: Without dead ends: 34 [2020-09-25 10:02:02,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:02:02,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-25 10:02:02,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-25 10:02:02,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 10:02:02,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-25 10:02:02,458 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 37 [2020-09-25 10:02:02,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:02:02,458 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-25 10:02:02,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:02:02,458 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-25 10:02:02,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 10:02:02,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:02:02,460 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:02:02,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:02:02,460 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:02:02,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:02:02,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1007399302, now seen corresponding path program 4 times [2020-09-25 10:02:02,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:02:02,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912534385] [2020-09-25 10:02:02,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:02:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:02,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:02,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:02,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 10:02:02,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:02,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-09-25 10:02:02,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:02,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:02,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 10:02:02,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 10:02:02,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 10:02:02,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:02,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:02:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:02,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:02,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:02,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:02:02,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:02,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:02:02,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:02,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:02,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:02,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:02,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:02,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:02,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 10:02:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:02,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:03,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:03,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 10:02:03,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:03,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-25 10:02:03,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:03,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:02:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 10:02:03,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:03,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:03,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:03,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:03,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 10:02:03,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:03,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 10:02:03,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:03,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:03,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:02:03,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:03,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 10:02:03,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:03,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:03,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:03,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:03,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 10:02:03,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:03,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 10:02:03,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:03,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:03,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:02:03,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:03,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:02:03,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:03,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:03,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:03,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:03,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:02:03,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:03,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 10:02:03,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:03,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:03,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:02:03,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:03,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:02:03,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:03,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:03,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:03,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:03,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:02:03,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:03,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:02:03,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:03,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:03,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:02:03,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:03,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:02:03,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 10:02:03,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912534385] [2020-09-25 10:02:03,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:02:03,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:02:03,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826381693] [2020-09-25 10:02:03,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:02:03,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:02:03,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:02:03,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:02:03,497 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-09-25 10:02:03,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:02:03,720 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-25 10:02:03,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 10:02:03,721 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-25 10:02:03,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:02:03,723 INFO L225 Difference]: With dead ends: 43 [2020-09-25 10:02:03,723 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 10:02:03,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-09-25 10:02:03,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 10:02:03,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 10:02:03,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 10:02:03,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 10:02:03,732 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 44 [2020-09-25 10:02:03,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:02:03,732 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 10:02:03,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:02:03,733 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 10:02:03,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 10:02:03,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:02:03,734 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:02:03,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:02:03,735 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:02:03,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:02:03,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1787659065, now seen corresponding path program 5 times [2020-09-25 10:02:03,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:02:03,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095855566] [2020-09-25 10:02:03,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:02:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:03,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:04,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:04,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 10:02:04,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:04,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-09-25 10:02:04,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:04,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:04,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:02:04,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 10:02:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:02:04,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:04,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:02:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:04,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:04,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:04,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:02:04,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:04,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:02:04,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:04,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:04,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:04,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:04,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:04,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:04,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 10:02:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:04,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:04,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:04,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 10:02:04,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:04,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-09-25 10:02:04,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:04,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:04,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:02:04,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:04,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 10:02:04,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:04,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:04,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:04,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:04,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 10:02:04,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:04,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-25 10:02:04,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:04,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:04,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:02:04,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:04,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 10:02:04,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:04,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:04,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:04,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:04,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 10:02:04,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:04,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 10:02:04,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:04,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:04,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:02:04,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:04,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 10:02:04,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:05,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:05,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:05,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:05,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 10:02:05,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:05,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 10:02:05,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:05,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:05,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:02:05,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:05,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:02:05,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:05,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:05,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:05,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:05,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:02:05,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:05,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 10:02:05,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:05,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:05,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:02:05,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:05,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:02:05,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:05,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:05,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:05,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:05,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:02:05,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:05,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:02:05,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:05,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:05,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:02:05,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:05,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:02:05,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:05,343 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 10:02:05,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095855566] [2020-09-25 10:02:05,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:02:05,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 10:02:05,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974824758] [2020-09-25 10:02:05,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:02:05,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:02:05,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:02:05,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:02:05,346 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 15 states. [2020-09-25 10:02:05,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:02:05,581 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-25 10:02:05,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 10:02:05,581 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-09-25 10:02:05,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:02:05,583 INFO L225 Difference]: With dead ends: 47 [2020-09-25 10:02:05,583 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 10:02:05,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:02:05,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 10:02:05,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 10:02:05,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 10:02:05,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-25 10:02:05,590 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 51 [2020-09-25 10:02:05,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:02:05,590 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-25 10:02:05,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:02:05,591 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-25 10:02:05,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 10:02:05,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:02:05,592 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:02:05,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:02:05,593 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:02:05,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:02:05,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1360883432, now seen corresponding path program 6 times [2020-09-25 10:02:05,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:02:05,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568905097] [2020-09-25 10:02:05,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:02:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:05,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:06,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:06,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:02:06,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:06,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-09-25 10:02:06,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:06,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:06,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 10:02:06,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 10:02:06,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:02:06,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:06,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:02:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:06,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:06,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:06,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:02:06,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:06,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:02:06,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:06,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:06,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:06,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:06,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:06,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:06,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 10:02:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:06,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:06,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:06,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 10:02:06,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:06,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-09-25 10:02:06,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:06,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:06,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:02:06,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:06,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 10:02:06,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:06,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:06,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:06,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:06,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 10:02:06,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:06,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-09-25 10:02:06,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:06,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:02:06,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:06,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 10:02:06,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:06,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:06,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:07,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:07,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 10:02:07,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:07,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-25 10:02:07,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:07,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:02:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 10:02:07,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:07,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:07,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:07,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:07,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 10:02:07,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:07,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 10:02:07,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:07,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:07,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:02:07,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:07,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 10:02:07,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:07,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:07,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:07,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:07,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 10:02:07,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:07,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 10:02:07,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:07,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:07,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:02:07,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:07,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:02:07,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:07,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:07,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:07,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:07,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:02:07,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:07,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 10:02:07,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:07,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:07,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:02:07,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:07,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:02:07,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:07,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:07,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:07,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:07,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:02:07,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:07,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:02:07,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:07,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:07,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:02:07,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:07,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:02:07,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:07,655 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 10:02:07,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568905097] [2020-09-25 10:02:07,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:02:07,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 10:02:07,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239644042] [2020-09-25 10:02:07,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 10:02:07,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:02:07,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 10:02:07,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:02:07,660 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 17 states. [2020-09-25 10:02:07,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:02:07,953 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-25 10:02:07,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 10:02:07,954 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-25 10:02:07,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:02:07,956 INFO L225 Difference]: With dead ends: 51 [2020-09-25 10:02:07,958 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 10:02:07,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-09-25 10:02:07,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 10:02:07,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-25 10:02:07,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-25 10:02:07,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-09-25 10:02:07,971 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 58 [2020-09-25 10:02:07,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:02:07,974 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-09-25 10:02:07,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 10:02:07,974 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-09-25 10:02:07,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 10:02:07,980 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:02:07,980 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:02:07,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:02:07,981 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:02:07,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:02:07,982 INFO L82 PathProgramCache]: Analyzing trace with hash -807968423, now seen corresponding path program 7 times [2020-09-25 10:02:07,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:02:07,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668986920] [2020-09-25 10:02:07,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:02:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:08,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:08,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:08,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 10:02:08,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:08,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 644 [2020-09-25 10:02:08,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:08,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:08,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 10:02:08,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 10:02:08,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 10:02:08,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:08,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:02:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:08,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:08,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:08,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:02:08,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:08,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:02:08,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:08,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:08,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:08,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:08,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:08,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:08,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 10:02:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:08,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:09,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:09,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 10:02:09,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:09,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-09-25 10:02:09,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:09,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:09,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 10:02:09,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:09,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 10:02:09,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:09,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:09,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:09,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:09,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 10:02:09,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:09,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-09-25 10:02:09,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:09,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:09,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:02:09,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:09,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 10:02:09,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:09,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:09,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:10,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:10,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 10:02:10,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:10,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-09-25 10:02:10,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:10,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:10,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:02:10,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:10,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 10:02:10,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:10,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:10,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:10,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:10,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 10:02:10,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:10,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-25 10:02:10,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:10,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:10,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:02:10,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:10,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 10:02:10,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:10,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:10,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:10,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:10,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 10:02:10,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:10,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 10:02:10,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:10,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:10,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:02:10,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:10,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 10:02:10,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:10,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:10,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:10,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:10,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 10:02:10,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:10,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 10:02:10,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:10,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:10,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:02:10,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:10,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:02:10,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:10,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:10,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:10,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:10,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:02:10,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:10,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 10:02:10,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:10,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:10,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:02:10,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:10,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:02:10,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:10,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:10,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:10,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:10,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:02:10,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:10,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:02:10,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:10,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:10,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:02:10,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:10,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:02:10,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:10,772 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-25 10:02:10,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668986920] [2020-09-25 10:02:10,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:02:10,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 10:02:10,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718344760] [2020-09-25 10:02:10,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 10:02:10,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:02:10,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 10:02:10,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:02:10,775 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 19 states. [2020-09-25 10:02:11,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:02:11,193 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-25 10:02:11,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 10:02:11,194 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-25 10:02:11,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:02:11,195 INFO L225 Difference]: With dead ends: 55 [2020-09-25 10:02:11,196 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 10:02:11,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2020-09-25 10:02:11,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 10:02:11,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 10:02:11,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 10:02:11,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-25 10:02:11,209 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 65 [2020-09-25 10:02:11,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:02:11,209 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-25 10:02:11,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 10:02:11,210 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-25 10:02:11,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 10:02:11,212 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:02:11,212 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:02:11,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:02:11,214 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:02:11,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:02:11,214 INFO L82 PathProgramCache]: Analyzing trace with hash -705364310, now seen corresponding path program 8 times [2020-09-25 10:02:11,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:02:11,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200903377] [2020-09-25 10:02:11,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:02:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:11,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:11,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:11,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 10:02:11,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:11,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 752 [2020-09-25 10:02:11,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:11,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:11,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 10:02:11,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 10:02:11,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 10:02:11,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:12,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:02:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:12,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:12,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:12,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:02:12,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:12,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:02:12,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:12,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:12,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:12,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:12,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:12,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:12,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 10:02:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:12,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:12,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:12,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 10:02:12,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:12,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 600 [2020-09-25 10:02:12,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:12,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:12,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 10:02:12,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:12,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 10:02:12,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:12,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:12,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:13,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:13,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 10:02:13,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:13,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-09-25 10:02:13,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:13,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 10:02:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 10:02:13,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:13,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:13,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:13,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:13,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 10:02:13,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:13,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-09-25 10:02:13,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:13,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:13,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:02:13,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:13,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 10:02:13,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:13,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:13,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:13,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:13,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 10:02:13,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:13,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-09-25 10:02:13,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:13,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:13,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:02:13,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:13,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 10:02:13,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:13,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:13,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:14,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:14,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 10:02:14,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:14,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 10:02:14,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:14,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:14,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:02:14,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:14,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 10:02:14,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:14,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:14,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:14,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:14,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 10:02:14,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:14,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 10:02:14,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:14,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:14,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:02:14,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:14,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 10:02:14,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:14,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:14,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:14,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:14,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 10:02:14,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:14,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 10:02:14,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:14,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:14,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:02:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:02:14,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:14,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:14,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:14,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:14,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:02:14,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:14,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 10:02:14,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:14,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:14,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:02:14,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:14,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:02:14,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:14,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:14,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:14,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:14,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:02:14,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:14,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:02:14,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:14,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:14,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:02:14,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:14,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:02:14,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:14,675 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-25 10:02:14,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200903377] [2020-09-25 10:02:14,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:02:14,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 10:02:14,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862011758] [2020-09-25 10:02:14,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 10:02:14,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:02:14,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 10:02:14,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:02:14,678 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-09-25 10:02:15,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:02:15,180 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-25 10:02:15,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 10:02:15,180 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-09-25 10:02:15,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:02:15,182 INFO L225 Difference]: With dead ends: 59 [2020-09-25 10:02:15,182 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 10:02:15,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2020-09-25 10:02:15,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 10:02:15,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-25 10:02:15,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 10:02:15,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-25 10:02:15,191 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 72 [2020-09-25 10:02:15,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:02:15,191 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-25 10:02:15,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 10:02:15,191 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-25 10:02:15,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 10:02:15,192 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:02:15,192 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:02:15,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 10:02:15,193 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:02:15,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:02:15,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1418439701, now seen corresponding path program 9 times [2020-09-25 10:02:15,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:02:15,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431348487] [2020-09-25 10:02:15,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:02:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:15,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:16,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:16,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 10:02:16,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:16,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 886 [2020-09-25 10:02:16,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:16,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:16,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 10:02:16,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-25 10:02:16,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 10:02:16,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:16,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:02:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:16,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:16,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:16,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:02:16,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:16,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:02:16,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:16,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:16,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:16,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:16,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:16,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:16,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 10:02:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:16,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:16,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:16,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 10:02:16,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:16,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 800 [2020-09-25 10:02:16,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:16,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:16,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 10:02:16,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:16,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 10:02:16,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:17,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:17,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:17,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:17,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 10:02:17,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:17,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 627 [2020-09-25 10:02:17,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:17,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:17,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 10:02:17,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:17,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 10:02:17,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:17,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:17,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:18,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:18,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 10:02:18,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:18,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 454 [2020-09-25 10:02:18,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:18,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:18,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 10:02:18,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:18,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 10:02:18,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:18,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:18,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:18,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:18,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 10:02:18,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:18,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-25 10:02:18,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:18,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:18,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:02:18,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:18,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 10:02:18,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:18,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:18,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:18,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:18,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 10:02:18,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:18,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-09-25 10:02:18,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:18,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:18,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:02:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 10:02:18,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:18,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:18,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:19,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:19,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 10:02:19,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:19,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 10:02:19,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:19,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:19,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:02:19,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:19,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 10:02:19,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:19,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:19,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:19,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:19,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 10:02:19,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:19,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 10:02:19,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:19,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:19,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:02:19,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:19,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 10:02:19,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:19,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:19,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:19,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:19,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 10:02:19,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:19,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 10:02:19,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:19,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:19,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:02:19,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:19,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:02:19,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:19,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:19,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:19,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:19,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:02:19,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:19,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:02:19,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:19,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:19,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:02:19,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:19,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:02:19,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:19,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:19,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:19,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:19,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:02:19,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:19,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:02:19,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:19,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:19,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:02:19,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:19,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:02:19,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:19,648 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-25 10:02:19,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431348487] [2020-09-25 10:02:19,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:02:19,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 10:02:19,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344423187] [2020-09-25 10:02:19,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 10:02:19,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:02:19,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 10:02:19,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-25 10:02:19,651 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 23 states. [2020-09-25 10:02:20,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:02:20,279 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-09-25 10:02:20,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 10:02:20,279 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-09-25 10:02:20,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:02:20,281 INFO L225 Difference]: With dead ends: 63 [2020-09-25 10:02:20,281 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 10:02:20,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 10:02:20,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 10:02:20,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 10:02:20,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 10:02:20,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-25 10:02:20,289 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 79 [2020-09-25 10:02:20,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:02:20,290 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-25 10:02:20,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 10:02:20,290 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-25 10:02:20,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 10:02:20,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:02:20,294 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:02:20,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 10:02:20,295 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:02:20,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:02:20,295 INFO L82 PathProgramCache]: Analyzing trace with hash -182126020, now seen corresponding path program 10 times [2020-09-25 10:02:20,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:02:20,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997971555] [2020-09-25 10:02:20,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:02:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:20,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:21,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:21,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 10:02:21,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:21,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 926 [2020-09-25 10:02:21,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:21,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:21,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 10:02:21,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 10:02:21,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 10:02:21,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:21,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:02:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:21,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:21,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:21,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:02:21,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:21,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:02:21,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:21,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:21,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:21,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:21,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:21,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:21,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 10:02:21,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:21,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:22,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:22,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 10:02:22,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:22,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 752 [2020-09-25 10:02:22,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:22,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:22,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 10:02:22,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:22,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 10:02:22,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:22,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:22,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:22,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:22,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 10:02:22,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:22,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 786 [2020-09-25 10:02:22,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:22,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 10:02:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 10:02:22,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:22,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:22,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:23,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:23,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 10:02:23,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:23,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-09-25 10:02:23,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:23,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:23,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 10:02:23,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:23,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 10:02:23,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:23,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:23,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:23,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:23,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 10:02:23,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:23,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-09-25 10:02:23,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:23,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:23,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 10:02:23,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:23,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 10:02:23,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:23,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:23,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:24,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:24,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 10:02:24,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:24,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-25 10:02:24,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:24,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:24,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:02:24,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:24,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 10:02:24,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:24,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:24,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:24,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:24,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 10:02:24,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:24,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-25 10:02:24,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:24,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:02:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 10:02:24,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:24,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:24,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:24,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:24,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 10:02:24,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:24,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 10:02:24,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:24,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:24,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:02:24,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:24,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 10:02:24,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:24,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:24,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:24,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:24,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 10:02:24,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:24,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 10:02:24,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:24,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:24,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:02:24,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:24,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 10:02:24,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:24,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:24,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:24,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:24,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 10:02:24,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:24,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 10:02:24,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:24,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:24,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:02:24,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:24,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:02:24,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:24,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:25,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:25,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:25,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:02:25,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:25,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 10:02:25,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:25,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:02:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:02:25,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:25,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:25,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:25,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:25,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:02:25,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:25,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:02:25,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:25,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:25,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:02:25,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:25,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:02:25,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:25,179 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-25 10:02:25,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997971555] [2020-09-25 10:02:25,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:02:25,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 10:02:25,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57860630] [2020-09-25 10:02:25,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 10:02:25,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:02:25,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 10:02:25,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-25 10:02:25,182 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 25 states. [2020-09-25 10:02:25,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:02:25,910 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-09-25 10:02:25,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-25 10:02:25,911 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-09-25 10:02:25,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:02:25,913 INFO L225 Difference]: With dead ends: 67 [2020-09-25 10:02:25,913 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 10:02:25,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 10:02:25,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 10:02:25,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-25 10:02:25,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 10:02:25,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-09-25 10:02:25,922 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 86 [2020-09-25 10:02:25,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:02:25,922 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-09-25 10:02:25,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 10:02:25,923 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-09-25 10:02:25,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-25 10:02:25,924 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:02:25,924 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:02:25,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 10:02:25,925 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:02:25,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:02:25,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1527469181, now seen corresponding path program 11 times [2020-09-25 10:02:25,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:02:25,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55260371] [2020-09-25 10:02:25,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:02:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:25,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:27,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:27,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-25 10:02:27,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:27,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1087 [2020-09-25 10:02:27,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:27,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:27,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 10:02:27,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 10:02:27,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 10:02:27,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:27,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:02:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:27,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:27,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:27,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:02:27,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:27,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:02:27,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:27,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:27,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:27,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:27,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:27,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:27,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 10:02:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:27,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:28,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:28,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 10:02:28,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:28,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 961 [2020-09-25 10:02:28,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:28,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:28,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 10:02:28,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:28,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 10:02:28,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:28,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:28,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:28,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:28,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:28,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 10:02:28,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:28,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 760 [2020-09-25 10:02:28,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:28,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:28,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 10:02:28,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:28,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 10:02:28,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:28,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:28,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:29,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:29,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 10:02:29,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:29,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 628 [2020-09-25 10:02:29,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:29,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 10:02:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:29,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 10:02:29,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:29,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:29,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:30,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:30,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 10:02:30,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:30,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-09-25 10:02:30,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:30,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:30,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 10:02:30,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:30,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 10:02:30,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:30,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:30,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:30,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:30,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 10:02:30,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:30,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-09-25 10:02:30,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:30,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:30,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 10:02:30,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:30,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 10:02:30,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:30,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:30,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:30,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:30,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 10:02:30,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:30,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-09-25 10:02:30,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:30,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:30,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:02:30,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:30,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 10:02:30,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:30,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:30,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:31,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:31,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 10:02:31,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:31,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-25 10:02:31,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:31,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:31,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:02:31,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:31,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 10:02:31,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:31,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:31,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:31,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:31,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 10:02:31,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:31,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 10:02:31,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:31,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:31,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:02:31,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:31,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 10:02:31,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:31,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:31,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:31,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:31,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 10:02:31,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:31,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 10:02:31,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:31,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:31,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:02:31,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:31,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 10:02:31,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:31,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:31,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:31,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:31,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 10:02:31,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:31,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 10:02:31,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:31,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:31,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:02:31,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:31,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:02:31,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:31,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:31,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:31,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:31,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:02:31,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:31,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 10:02:31,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:31,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:02:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:02:31,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:31,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:31,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:31,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:31,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:02:31,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:31,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:02:31,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:31,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:31,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:02:31,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:31,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:02:31,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:31,932 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-25 10:02:31,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55260371] [2020-09-25 10:02:31,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:02:31,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 10:02:31,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400100414] [2020-09-25 10:02:31,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 10:02:31,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:02:31,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 10:02:31,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-09-25 10:02:31,934 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 27 states. [2020-09-25 10:02:32,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:02:32,771 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-25 10:02:32,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-25 10:02:32,772 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 93 [2020-09-25 10:02:32,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:02:32,773 INFO L225 Difference]: With dead ends: 71 [2020-09-25 10:02:32,773 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 10:02:32,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=1383, Unknown=0, NotChecked=0, Total=1482 [2020-09-25 10:02:32,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 10:02:32,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-25 10:02:32,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 10:02:32,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-09-25 10:02:32,788 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 93 [2020-09-25 10:02:32,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:02:32,789 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-09-25 10:02:32,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 10:02:32,789 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-09-25 10:02:32,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-25 10:02:32,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:02:32,791 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:02:32,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 10:02:32,791 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:02:32,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:02:32,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1034648626, now seen corresponding path program 12 times [2020-09-25 10:02:32,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:02:32,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759514584] [2020-09-25 10:02:32,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:02:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:32,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:34,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:34,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 10:02:34,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:34,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1270 [2020-09-25 10:02:34,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:34,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:34,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 10:02:34,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-25 10:02:34,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 10:02:34,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:34,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:02:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:34,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:34,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:34,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:02:34,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:34,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:02:34,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:34,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:34,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:34,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:34,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:34,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:34,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 10:02:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:34,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:35,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:35,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 10:02:35,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:35,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1100 [2020-09-25 10:02:35,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:35,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:35,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 10:02:35,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:35,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 10:02:35,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:35,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:35,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:36,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:36,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 10:02:36,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:36,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 981 [2020-09-25 10:02:36,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:36,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:36,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 10:02:36,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:36,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 10:02:36,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:36,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:36,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:37,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:37,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 10:02:37,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:37,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 725 [2020-09-25 10:02:37,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:37,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:37,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 10:02:37,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:37,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 10:02:37,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:37,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:37,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:37,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:37,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 10:02:37,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:37,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-09-25 10:02:37,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:37,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:37,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 10:02:37,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:37,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 10:02:37,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:37,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:37,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:38,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:38,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 10:02:38,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:38,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-09-25 10:02:38,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:38,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:38,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 10:02:38,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:38,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 10:02:38,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:38,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:38,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:38,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:38,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 10:02:38,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:38,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-09-25 10:02:38,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:38,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:38,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 10:02:38,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:38,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 10:02:38,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:38,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:38,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:39,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:39,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 10:02:39,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:39,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-09-25 10:02:39,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:39,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:39,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:02:39,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:39,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 10:02:39,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:39,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:39,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:39,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:39,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 10:02:39,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:39,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 10:02:39,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:39,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:39,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:02:39,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:39,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 10:02:39,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:39,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:39,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:39,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:39,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 10:02:39,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:39,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 10:02:39,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:39,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:39,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:02:39,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:39,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 10:02:39,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:39,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:39,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:39,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:39,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 10:02:39,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:39,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 10:02:39,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:39,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:39,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:02:39,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:39,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 10:02:39,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:39,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:39,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:39,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:39,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 10:02:39,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:39,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 10:02:39,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:39,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:39,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:02:39,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:39,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:02:39,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:40,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:40,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:40,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:40,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:02:40,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:40,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:02:40,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:40,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:40,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:02:40,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:40,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:02:40,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:40,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:40,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:40,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:40,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:02:40,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:40,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:02:40,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:40,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:40,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:02:40,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:40,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:02:40,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:40,267 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-09-25 10:02:40,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759514584] [2020-09-25 10:02:40,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:02:40,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-25 10:02:40,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070528418] [2020-09-25 10:02:40,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-25 10:02:40,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:02:40,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-25 10:02:40,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-09-25 10:02:40,271 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 29 states. [2020-09-25 10:02:41,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:02:41,259 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2020-09-25 10:02:41,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-25 10:02:41,259 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2020-09-25 10:02:41,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:02:41,260 INFO L225 Difference]: With dead ends: 75 [2020-09-25 10:02:41,260 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 10:02:41,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=107, Invalid=1615, Unknown=0, NotChecked=0, Total=1722 [2020-09-25 10:02:41,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 10:02:41,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-25 10:02:41,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 10:02:41,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-25 10:02:41,276 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 100 [2020-09-25 10:02:41,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:02:41,279 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-25 10:02:41,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-25 10:02:41,279 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-25 10:02:41,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 10:02:41,280 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:02:41,280 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:02:41,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 10:02:41,281 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:02:41,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:02:41,281 INFO L82 PathProgramCache]: Analyzing trace with hash 996041487, now seen corresponding path program 13 times [2020-09-25 10:02:41,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:02:41,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359401111] [2020-09-25 10:02:41,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:02:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:41,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:42,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:42,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 10:02:42,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:42,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1473 [2020-09-25 10:02:42,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:42,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:42,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-25 10:02:42,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 10:02:42,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 10:02:42,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:42,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:02:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:42,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:42,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:42,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:02:42,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:42,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:02:42,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:42,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:42,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:42,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:42,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:42,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:42,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 10:02:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:42,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:44,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:44,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 10:02:44,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:44,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1307 [2020-09-25 10:02:44,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:44,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-25 10:02:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:44,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 10:02:44,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:44,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:44,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:45,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:45,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 10:02:45,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:45,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1122 [2020-09-25 10:02:45,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:45,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:45,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 10:02:45,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:45,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 10:02:45,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:45,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:45,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:46,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:46,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 10:02:46,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:46,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 972 [2020-09-25 10:02:46,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:46,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:46,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 10:02:46,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:46,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 10:02:46,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:46,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:46,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:47,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:47,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 10:02:47,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:47,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 742 [2020-09-25 10:02:47,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:47,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:47,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 10:02:47,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:47,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 10:02:47,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:47,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:47,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:47,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:47,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 10:02:47,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:47,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-09-25 10:02:47,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:47,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:47,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 10:02:47,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:47,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 10:02:47,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:47,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:47,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:48,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:48,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 10:02:48,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:48,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-09-25 10:02:48,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:48,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:48,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 10:02:48,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:48,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 10:02:48,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:48,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:48,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:48,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:48,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 10:02:48,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:48,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-09-25 10:02:48,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:48,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:48,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 10:02:48,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:48,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 10:02:48,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:48,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:48,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:49,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:49,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 10:02:49,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:49,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-09-25 10:02:49,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:49,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:49,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:02:49,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:49,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 10:02:49,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:49,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:49,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:49,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:49,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 10:02:49,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:49,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-09-25 10:02:49,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:49,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:49,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:02:49,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:49,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 10:02:49,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:49,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:49,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:49,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:49,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 10:02:49,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:49,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 10:02:49,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:49,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:02:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 10:02:49,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:49,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:49,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:49,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:49,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 10:02:49,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:49,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 10:02:49,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:49,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:02:49,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:49,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 10:02:49,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:49,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:49,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:49,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:49,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 10:02:49,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:49,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 10:02:49,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:49,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:02:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:02:49,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:49,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:49,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:49,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:49,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:02:49,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:49,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:02:49,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:50,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:02:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:02:50,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:50,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:50,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:50,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:50,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:02:50,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:50,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:02:50,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:50,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:50,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:02:50,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:50,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:02:50,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:50,210 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-09-25 10:02:50,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359401111] [2020-09-25 10:02:50,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:02:50,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-25 10:02:50,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986879856] [2020-09-25 10:02:50,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-25 10:02:50,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:02:50,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-25 10:02:50,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-09-25 10:02:50,213 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 31 states. [2020-09-25 10:02:51,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:02:51,244 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-25 10:02:51,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-25 10:02:51,245 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 107 [2020-09-25 10:02:51,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:02:51,246 INFO L225 Difference]: With dead ends: 79 [2020-09-25 10:02:51,247 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 10:02:51,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=115, Invalid=1865, Unknown=0, NotChecked=0, Total=1980 [2020-09-25 10:02:51,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 10:02:51,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-25 10:02:51,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 10:02:51,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-09-25 10:02:51,254 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 107 [2020-09-25 10:02:51,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:02:51,254 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-09-25 10:02:51,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-25 10:02:51,254 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-09-25 10:02:51,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 10:02:51,256 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:02:51,256 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:02:51,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 10:02:51,256 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:02:51,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:02:51,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1701157728, now seen corresponding path program 14 times [2020-09-25 10:02:51,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:02:51,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604319229] [2020-09-25 10:02:51,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:02:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:51,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:53,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:53,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 10:02:53,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:53,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1758 [2020-09-25 10:02:53,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:53,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:53,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-25 10:02:53,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-25 10:02:53,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 10:02:53,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:53,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:02:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:53,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:53,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:53,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:02:53,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:53,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:02:53,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:53,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:53,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:53,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 10:02:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:53,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:54,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:54,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 10:02:54,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:54,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1532 [2020-09-25 10:02:54,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:54,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:54,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-25 10:02:54,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:54,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 10:02:54,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:54,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:54,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking...