/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=SHALLOWEST --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/recHanoi01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:45:40,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:45:40,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:45:40,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:45:40,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:45:40,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:45:40,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:45:40,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:45:40,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:45:40,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:45:40,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:45:40,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:45:40,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:45:40,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:45:40,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:45:40,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:45:40,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:45:40,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:45:40,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:45:40,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:45:40,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:45:40,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:45:40,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:45:40,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:45:40,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:45:40,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:45:40,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:45:40,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:45:40,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:45:40,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:45:40,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:45:40,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:45:40,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:45:40,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:45:40,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:45:40,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:45:40,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:45:40,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:45:40,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:45:40,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:45:40,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:45:40,707 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 [2020-09-24 23:45:40,765 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:45:40,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:45:40,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:45:40,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:45:40,768 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:45:40,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:45:40,769 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:45:40,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:45:40,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:45:40,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:45:40,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:45:40,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:45:40,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:45:40,770 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:45:40,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:45:40,771 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:45:40,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:45:40,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:45:40,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:45:40,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:45:40,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:45:40,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:45:40,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:45:40,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:45:40,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:45:40,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:45:40,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:45:40,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:45:40,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:45:40,775 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-24 23:45:41,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:45:41,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:45:41,324 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:45:41,326 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:45:41,327 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:45:41,328 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi01.c [2020-09-24 23:45:41,413 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddd7c664f/8bcc588591cb451987d79c8b6f0e488b/FLAG837833e60 [2020-09-24 23:45:41,972 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:45:41,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/recHanoi01.c [2020-09-24 23:45:41,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddd7c664f/8bcc588591cb451987d79c8b6f0e488b/FLAG837833e60 [2020-09-24 23:45:42,318 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddd7c664f/8bcc588591cb451987d79c8b6f0e488b [2020-09-24 23:45:42,333 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:45:42,340 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:45:42,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:45:42,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:45:42,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:45:42,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:45:42" (1/1) ... [2020-09-24 23:45:42,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72ed4526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:42, skipping insertion in model container [2020-09-24 23:45:42,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:45:42" (1/1) ... [2020-09-24 23:45:42,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:45:42,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:45:42,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:45:42,619 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:45:42,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:45:42,653 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:45:42,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:42 WrapperNode [2020-09-24 23:45:42,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:45:42,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:45:42,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:45:42,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:45:42,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:42" (1/1) ... [2020-09-24 23:45:42,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:42" (1/1) ... [2020-09-24 23:45:42,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:42" (1/1) ... [2020-09-24 23:45:42,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:42" (1/1) ... [2020-09-24 23:45:42,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:42" (1/1) ... [2020-09-24 23:45:42,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:42" (1/1) ... [2020-09-24 23:45:42,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:42" (1/1) ... [2020-09-24 23:45:42,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:45:42,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:45:42,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:45:42,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:45:42,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:42" (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 [2020-09-24 23:45:42,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:45:42,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:45:42,843 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-09-24 23:45:42,843 INFO L138 BoogieDeclarations]: Found implementation of procedure applyHanoi [2020-09-24 23:45:42,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:45:42,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:45:42,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:45:42,844 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-09-24 23:45:42,844 INFO L130 BoogieDeclarations]: Found specification of procedure applyHanoi [2020-09-24 23:45:42,844 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:45:42,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:45:42,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:45:43,133 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:45:43,134 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 23:45:43,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:45:43 BoogieIcfgContainer [2020-09-24 23:45:43,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:45:43,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:45:43,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:45:43,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:45:43,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:45:42" (1/3) ... [2020-09-24 23:45:43,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37484453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:45:43, skipping insertion in model container [2020-09-24 23:45:43,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:42" (2/3) ... [2020-09-24 23:45:43,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37484453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:45:43, skipping insertion in model container [2020-09-24 23:45:43,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:45:43" (3/3) ... [2020-09-24 23:45:43,148 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi01.c [2020-09-24 23:45:43,159 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:45:43,170 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:45:43,192 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:45:43,219 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:45:43,220 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:45:43,220 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:45:43,220 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:45:43,220 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:45:43,220 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:45:43,221 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:45:43,221 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:45:43,242 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-24 23:45:43,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 23:45:43,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:43,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:43,252 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:43,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:43,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1892500808, now seen corresponding path program 1 times [2020-09-24 23:45:43,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:43,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094935640] [2020-09-24 23:45:43,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:43,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:43,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:43,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:43,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 23:45:43,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:43,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 559 [2020-09-24 23:45:43,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:43,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:45:43,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 23:45:43,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 23:45:43,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 23:45:44,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:44,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:44,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:44,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 23:45:44,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:44,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:45:44,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:44,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:44,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:44,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:44,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:44,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:45:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:44,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:44,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:44,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:45:44,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:44,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 23:45:44,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:44,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:45:44,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:45:44,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:45:44,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:44,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 23:45:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:44,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:44,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:44,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:45:44,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:44,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:45:44,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:44,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:44,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:45:44,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:44,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:44,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:45:44,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094935640] [2020-09-24 23:45:44,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:45:44,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 23:45:44,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038572577] [2020-09-24 23:45:44,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:45:44,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:44,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:45:44,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:45:44,182 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 6 states. [2020-09-24 23:45:44,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:44,421 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2020-09-24 23:45:44,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 23:45:44,423 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-24 23:45:44,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:44,438 INFO L225 Difference]: With dead ends: 70 [2020-09-24 23:45:44,438 INFO L226 Difference]: Without dead ends: 41 [2020-09-24 23:45:44,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:45:44,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-24 23:45:44,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-09-24 23:45:44,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-24 23:45:44,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-09-24 23:45:44,505 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 29 [2020-09-24 23:45:44,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:44,506 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-09-24 23:45:44,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:45:44,507 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-09-24 23:45:44,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 23:45:44,510 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:44,511 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:44,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:45:44,511 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:44,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:44,512 INFO L82 PathProgramCache]: Analyzing trace with hash -165736076, now seen corresponding path program 1 times [2020-09-24 23:45:44,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:44,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694425158] [2020-09-24 23:45:44,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:44,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:44,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:44,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 23:45:44,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:44,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-09-24 23:45:44,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:44,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 23:45:44,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 23:45:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 23:45:44,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:45,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:45,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:45,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:45,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 23:45:45,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:45,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:45:45,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:45,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:45,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:45,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:45,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:45,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:45:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:45,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:45,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:45,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 23:45:45,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:45,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-24 23:45:45,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:45,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:45:45,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:45:45,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 23:45:45,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:45,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:45:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:45,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:45,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:45,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:45:45,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:45,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 23:45:45,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:45,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:45:45,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:45:45,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:45:45,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:45,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 23:45:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:45,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:45,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:45,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:45:45,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:45,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 23:45:45,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:45,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:45:45,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:45:45,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:45:45,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:45,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 23:45:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:45,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:45,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:45,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:45:45,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:45,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 23:45:45,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:45:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:45:45,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:45,440 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-24 23:45:45,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694425158] [2020-09-24 23:45:45,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:45:45,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 23:45:45,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439839885] [2020-09-24 23:45:45,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 23:45:45,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:45,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 23:45:45,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:45:45,445 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 11 states. [2020-09-24 23:45:46,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:46,026 INFO L93 Difference]: Finished difference Result 93 states and 110 transitions. [2020-09-24 23:45:46,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 23:45:46,027 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-09-24 23:45:46,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:46,031 INFO L225 Difference]: With dead ends: 93 [2020-09-24 23:45:46,031 INFO L226 Difference]: Without dead ends: 85 [2020-09-24 23:45:46,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2020-09-24 23:45:46,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-24 23:45:46,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 75. [2020-09-24 23:45:46,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-24 23:45:46,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2020-09-24 23:45:46,053 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 48 [2020-09-24 23:45:46,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:46,054 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2020-09-24 23:45:46,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 23:45:46,054 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2020-09-24 23:45:46,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 23:45:46,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:46,057 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:46,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:45:46,058 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:46,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:46,059 INFO L82 PathProgramCache]: Analyzing trace with hash 492898986, now seen corresponding path program 1 times [2020-09-24 23:45:46,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:46,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948908354] [2020-09-24 23:45:46,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:46,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:46,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:46,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:46,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:48,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:48,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 23:45:48,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:45:48,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2034 [2020-09-24 23:45:48,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:48,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:45:48,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 23:45:48,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 23:45:48,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:48,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:48,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:48,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:48,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 23:45:48,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:48,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:45:48,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:48,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:48,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:48,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:48,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:45:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:48,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:48,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:48,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:48,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 23:45:48,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:48,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-09-24 23:45:48,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:48,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:45:48,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:48,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 23:45:48,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:48,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:45:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:48,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:48,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:48,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:45:48,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:48,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 23:45:48,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:48,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:45:48,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:48,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:45:48,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:48,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 23:45:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:48,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:48,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:48,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:45:48,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:48,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 23:45:48,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:48,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:45:48,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:48,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 23:45:48,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:48,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 23:45:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:48,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:48,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:48,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:48,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 23:45:48,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:48,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 23:45:48,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:48,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:45:48,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:45:48,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 23:45:48,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:48,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:45:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:48,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:48,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:48,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:45:48,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:48,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 23:45:48,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:48,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:45:48,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:48,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:45:48,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:48,678 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 23:45:48,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948908354] [2020-09-24 23:45:48,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:45:48,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 23:45:48,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310581232] [2020-09-24 23:45:48,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 23:45:48,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:48,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 23:45:48,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:45:48,681 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand 11 states. [2020-09-24 23:45:49,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:49,016 INFO L93 Difference]: Finished difference Result 132 states and 171 transitions. [2020-09-24 23:45:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 23:45:49,017 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2020-09-24 23:45:49,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:49,019 INFO L225 Difference]: With dead ends: 132 [2020-09-24 23:45:49,019 INFO L226 Difference]: Without dead ends: 76 [2020-09-24 23:45:49,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-09-24 23:45:49,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-24 23:45:49,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2020-09-24 23:45:49,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 23:45:49,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2020-09-24 23:45:49,035 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 56 [2020-09-24 23:45:49,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:49,035 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2020-09-24 23:45:49,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 23:45:49,035 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2020-09-24 23:45:49,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-24 23:45:49,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:49,038 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:49,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:45:49,038 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:49,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:49,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1310810726, now seen corresponding path program 2 times [2020-09-24 23:45:49,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:49,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486387318] [2020-09-24 23:45:49,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:49,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:49,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:49,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:49,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:50,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:50,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:54,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:54,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 23:45:54,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 23:45:54,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 23:45:54,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:54,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:45:54,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 23:45:54,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 23:45:54,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:54,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:54,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:54,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:54,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 23:45:54,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:54,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:45:54,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:54,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:54,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:54,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:54,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 23:45:54,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:45:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:54,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:54,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:54,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:54,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:54,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:54,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:56,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:56,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 23:45:56,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 23:45:56,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2696 [2020-09-24 23:45:56,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:56,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:45:56,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:56,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 23:45:56,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:56,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:45:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:56,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:56,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:56,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:57,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:57,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 23:45:57,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:45:57,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-09-24 23:45:57,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:57,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:45:57,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:57,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 23:45:57,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:57,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:45:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:57,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:57,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:57,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:45:57,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:57,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:45:57,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:57,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:45:57,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:57,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:45:57,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:57,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 23:45:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:57,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:57,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:57,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:45:57,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:57,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:45:57,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:45:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:45:57,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:57,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 23:45:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:57,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:57,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:57,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:45:57,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:57,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 23:45:57,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:57,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:45:57,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:57,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:45:57,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 23:45:57,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-24 23:45:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:57,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:57,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:57,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:45:57,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:57,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 23:45:57,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:57,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:45:57,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:45:57,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:45:57,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:57,421 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 14 proven. 33 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-24 23:45:57,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486387318] [2020-09-24 23:45:57,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:45:57,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 23:45:57,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364592155] [2020-09-24 23:45:57,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 23:45:57,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:57,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 23:45:57,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 23:45:57,426 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand 10 states. [2020-09-24 23:45:57,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:57,701 INFO L93 Difference]: Finished difference Result 115 states and 143 transitions. [2020-09-24 23:45:57,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 23:45:57,702 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-09-24 23:45:57,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:57,707 INFO L225 Difference]: With dead ends: 115 [2020-09-24 23:45:57,708 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 23:45:57,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-09-24 23:45:57,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 23:45:57,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2020-09-24 23:45:57,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-24 23:45:57,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-09-24 23:45:57,731 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 67 [2020-09-24 23:45:57,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:57,732 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-09-24 23:45:57,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 23:45:57,733 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-09-24 23:45:57,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-24 23:45:57,735 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:57,736 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:57,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:45:57,736 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:57,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:57,738 INFO L82 PathProgramCache]: Analyzing trace with hash -646694506, now seen corresponding path program 2 times [2020-09-24 23:45:57,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:57,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048469199] [2020-09-24 23:45:57,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:57,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:59,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:59,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 23:45:59,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:59,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1254 [2020-09-24 23:45:59,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:59,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 23:45:59,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 23:45:59,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-24 23:45:59,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:59,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:59,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:59,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:59,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 23:45:59,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:59,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:45:59,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:59,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:59,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:59,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:59,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:59,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:45:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:59,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:59,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:59,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 23:45:59,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:59,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 566 [2020-09-24 23:45:59,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:59,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 23:45:59,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:45:59,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 23:45:59,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:59,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:45:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:59,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:59,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:59,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 23:45:59,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:59,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-24 23:45:59,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:45:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:45:59,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 23:45:59,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:59,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:45:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:59,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:59,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:59,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:45:59,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:59,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 23:45:59,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:59,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:45:59,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:45:59,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:45:59,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:59,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 23:46:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:00,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:00,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:00,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:46:00,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:00,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 23:46:00,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:00,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:46:00,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:46:00,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:46:00,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:00,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 23:46:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:00,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:00,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:00,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 23:46:00,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:00,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-24 23:46:00,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:00,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:46:00,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:46:00,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 23:46:00,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:00,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:46:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:00,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:00,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:00,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:46:00,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:00,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 23:46:00,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:00,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:46:00,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:46:00,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:46:00,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:00,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 23:46:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:00,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:00,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:00,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:46:00,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:00,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 23:46:00,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:00,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:46:00,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:46:00,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:46:00,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:00,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-24 23:46:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:00,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:00,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:00,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 23:46:00,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:00,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 23:46:00,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:00,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:46:00,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:00,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 23:46:00,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:00,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:46:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:00,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:00,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:00,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:00,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:00,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:46:00,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:00,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:46:00,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:00,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:46:00,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:00,490 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 6 proven. 63 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-09-24 23:46:00,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048469199] [2020-09-24 23:46:00,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:46:00,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 23:46:00,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317406281] [2020-09-24 23:46:00,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 23:46:00,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:00,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 23:46:00,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-09-24 23:46:00,493 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 17 states. [2020-09-24 23:46:01,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:46:01,260 INFO L93 Difference]: Finished difference Result 102 states and 118 transitions. [2020-09-24 23:46:01,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 23:46:01,261 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 94 [2020-09-24 23:46:01,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:46:01,264 INFO L225 Difference]: With dead ends: 102 [2020-09-24 23:46:01,265 INFO L226 Difference]: Without dead ends: 96 [2020-09-24 23:46:01,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=187, Invalid=1003, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 23:46:01,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-24 23:46:01,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 85. [2020-09-24 23:46:01,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 23:46:01,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 101 transitions. [2020-09-24 23:46:01,291 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 101 transitions. Word has length 94 [2020-09-24 23:46:01,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:46:01,293 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 101 transitions. [2020-09-24 23:46:01,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 23:46:01,294 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 101 transitions. [2020-09-24 23:46:01,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-24 23:46:01,301 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:01,301 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 6, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:46:01,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 23:46:01,301 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:01,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:01,302 INFO L82 PathProgramCache]: Analyzing trace with hash 774145474, now seen corresponding path program 3 times [2020-09-24 23:46:01,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:01,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626388874] [2020-09-24 23:46:01,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:01,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:01,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:01,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:01,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:02,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:02,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:03,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:06,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:06,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-24 23:46:06,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 23:46:06,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-24 23:46:06,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:06,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:46:06,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 23:46:06,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 23:46:06,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 23:46:06,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:06,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:06,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:06,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 23:46:06,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:06,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:46:06,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:06,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:06,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:06,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:06,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:06,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:46:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:06,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:06,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:06,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:06,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:06,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:08,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:08,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:08,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:09,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:09,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:11,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:11,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 23:46:11,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 23:46:11,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 23:46:11,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:11,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:46:11,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 23:46:11,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-24 23:46:11,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:11,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:46:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:11,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:11,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:11,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:11,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 23:46:11,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:46:11,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-24 23:46:11,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:11,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:46:11,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:11,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 23:46:11,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:11,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:46:11,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:11,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:11,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:11,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:46:11,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:11,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 23:46:11,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:11,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:11,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:11,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:46:11,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:11,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 23:46:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:11,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:11,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:11,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:46:11,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:11,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 23:46:11,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:11,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:46:11,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:11,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 23:46:11,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:11,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 23:46:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:11,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:11,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:11,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:13,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:16,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:16,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 23:46:16,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:46:16,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 23:46:16,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:16,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:46:16,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:46:16,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 23:46:16,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:16,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:46:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:16,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:16,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:17,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:17,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 23:46:17,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:46:17,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-09-24 23:46:17,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:17,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:46:17,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:17,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 23:46:17,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:17,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:46:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:17,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:17,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:17,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:46:17,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:17,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:46:17,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:17,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:17,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:17,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:46:17,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:17,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 23:46:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:17,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:17,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:17,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:46:17,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:17,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 23:46:17,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:17,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:46:17,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:17,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 23:46:17,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:17,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 23:46:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:17,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:17,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:17,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 23:46:17,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:17,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 23:46:17,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:17,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:17,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:17,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 23:46:17,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:17,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:46:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:17,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:17,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:17,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:46:17,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:17,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:46:17,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:17,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:17,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:17,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:17,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:17,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 23:46:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:17,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:17,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:17,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:46:17,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:17,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:46:17,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:17,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:17,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:17,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:17,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:17,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-09-24 23:46:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:17,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:17,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:17,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 23:46:17,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:17,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:46:17,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:17,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:17,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 23:46:17,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:17,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:17,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:46:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:17,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:17,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:17,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:17,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:17,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:46:17,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:17,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:17,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:17,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:17,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 112 proven. 171 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-09-24 23:46:17,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626388874] [2020-09-24 23:46:17,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:46:17,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 23:46:17,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058009447] [2020-09-24 23:46:17,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 23:46:17,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:17,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 23:46:17,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-24 23:46:17,283 INFO L87 Difference]: Start difference. First operand 85 states and 101 transitions. Second operand 12 states. [2020-09-24 23:46:17,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:46:17,670 INFO L93 Difference]: Finished difference Result 163 states and 207 transitions. [2020-09-24 23:46:17,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 23:46:17,671 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 132 [2020-09-24 23:46:17,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:46:17,674 INFO L225 Difference]: With dead ends: 163 [2020-09-24 23:46:17,674 INFO L226 Difference]: Without dead ends: 115 [2020-09-24 23:46:17,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2020-09-24 23:46:17,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-24 23:46:17,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 94. [2020-09-24 23:46:17,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-24 23:46:17,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2020-09-24 23:46:17,690 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 132 [2020-09-24 23:46:17,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:46:17,691 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2020-09-24 23:46:17,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 23:46:17,691 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2020-09-24 23:46:17,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-24 23:46:17,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:17,693 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:46:17,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 23:46:17,693 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:17,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:17,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1860925472, now seen corresponding path program 4 times [2020-09-24 23:46:17,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:17,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247911756] [2020-09-24 23:46:17,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:17,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:17,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:17,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:17,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:18,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:22,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:22,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-24 23:46:22,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 23:46:22,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 23:46:22,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:22,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:46:22,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 23:46:22,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 23:46:22,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:22,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:22,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:22,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:22,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 23:46:22,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:22,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:46:22,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:22,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:22,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:22,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:22,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:22,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:46:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:22,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:22,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:22,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:23,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:27,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:27,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 23:46:27,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:46:27,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 23:46:27,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:27,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:46:27,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:27,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 23:46:27,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:27,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:46:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:27,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:27,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:27,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 23:46:27,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:27,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 23:46:27,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:27,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:27,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:27,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 23:46:27,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:27,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:46:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:27,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:27,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:27,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:46:27,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:27,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:46:27,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:27,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:27,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:27,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:27,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:27,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 23:46:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:27,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:27,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:27,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:46:27,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:27,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:46:27,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:27,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:27,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:27,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:27,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:27,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 23:46:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:27,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:27,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:28,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 23:46:28,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:46:28,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-24 23:46:28,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:28,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:46:28,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:28,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 23:46:28,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:28,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:46:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:28,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:28,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:46:28,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:28,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 23:46:28,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:46:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 23:46:28,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:28,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 23:46:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:28,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:28,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:46:28,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:28,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 23:46:28,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:28,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:28,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:28,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:46:28,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:28,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-24 23:46:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:28,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:28,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 23:46:28,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:46:28,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 23:46:28,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:28,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:46:28,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:46:28,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 23:46:28,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:28,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:46:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:28,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:28,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 23:46:28,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:28,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 23:46:28,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:28,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:46:28,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:28,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 23:46:28,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:28,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:46:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:28,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:28,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:28,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:28,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 23:46:28,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:28,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:46:28,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:28,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:28,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:28,453 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 58 proven. 43 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-24 23:46:28,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247911756] [2020-09-24 23:46:28,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:46:28,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 23:46:28,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257715772] [2020-09-24 23:46:28,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 23:46:28,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:28,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 23:46:28,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-24 23:46:28,456 INFO L87 Difference]: Start difference. First operand 94 states and 109 transitions. Second operand 13 states. [2020-09-24 23:46:29,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:46:29,045 INFO L93 Difference]: Finished difference Result 126 states and 151 transitions. [2020-09-24 23:46:29,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 23:46:29,046 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 102 [2020-09-24 23:46:29,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:46:29,048 INFO L225 Difference]: With dead ends: 126 [2020-09-24 23:46:29,048 INFO L226 Difference]: Without dead ends: 94 [2020-09-24 23:46:29,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2020-09-24 23:46:29,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-24 23:46:29,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2020-09-24 23:46:29,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-24 23:46:29,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 105 transitions. [2020-09-24 23:46:29,060 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 105 transitions. Word has length 102 [2020-09-24 23:46:29,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:46:29,060 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 105 transitions. [2020-09-24 23:46:29,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 23:46:29,060 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 105 transitions. [2020-09-24 23:46:29,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-24 23:46:29,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:29,062 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 6, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:46:29,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 23:46:29,062 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:29,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:29,063 INFO L82 PathProgramCache]: Analyzing trace with hash 837957098, now seen corresponding path program 5 times [2020-09-24 23:46:29,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:29,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419033054] [2020-09-24 23:46:29,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:29,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:29,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:29,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:29,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:30,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:30,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:30,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:30,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:30,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:30,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking...