/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=BIGGEST --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/Ackermann04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:22:49,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:22:49,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:22:49,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:22:49,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:22:49,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:22:49,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:22:49,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:22:49,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:22:49,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:22:49,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:22:49,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:22:49,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:22:49,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:22:49,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:22:49,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:22:49,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:22:49,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:22:49,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:22:49,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:22:49,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:22:49,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:22:49,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:22:49,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:22:49,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:22:49,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:22:49,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:22:49,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:22:49,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:22:49,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:22:49,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:22:49,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:22:49,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:22:49,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:22:49,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:22:49,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:22:49,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:22:49,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:22:49,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:22:49,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:22:49,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:22:49,206 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 20:22:49,253 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:22:49,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:22:49,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:22:49,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:22:49,256 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:22:49,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:22:49,257 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:22:49,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:22:49,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:22:49,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:22:49,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:22:49,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:22:49,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:22:49,260 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:22:49,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:22:49,260 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:22:49,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:22:49,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:22:49,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:22:49,261 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:22:49,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:22:49,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:22:49,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:22:49,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:22:49,263 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:22:49,263 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:22:49,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:22:49,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:22:49,263 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:22:49,264 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:22:49,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:22:49,716 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:22:49,720 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:22:49,722 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:22:49,722 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:22:49,724 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann04.c [2020-09-24 20:22:49,806 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4690202bd/d43ae03ef9b644aa9dd8a719200db925/FLAG9b1697eb9 [2020-09-24 20:22:50,346 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:22:50,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Ackermann04.c [2020-09-24 20:22:50,354 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4690202bd/d43ae03ef9b644aa9dd8a719200db925/FLAG9b1697eb9 [2020-09-24 20:22:50,698 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4690202bd/d43ae03ef9b644aa9dd8a719200db925 [2020-09-24 20:22:50,711 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:22:50,718 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:22:50,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:22:50,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:22:50,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:22:50,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:22:50" (1/1) ... [2020-09-24 20:22:50,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57c4c539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:50, skipping insertion in model container [2020-09-24 20:22:50,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:22:50" (1/1) ... [2020-09-24 20:22:50,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:22:50,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:22:51,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:22:51,048 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:22:51,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:22:51,084 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:22:51,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:51 WrapperNode [2020-09-24 20:22:51,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:22:51,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:22:51,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:22:51,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:22:51,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:51" (1/1) ... [2020-09-24 20:22:51,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:51" (1/1) ... [2020-09-24 20:22:51,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:51" (1/1) ... [2020-09-24 20:22:51,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:51" (1/1) ... [2020-09-24 20:22:51,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:51" (1/1) ... [2020-09-24 20:22:51,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:51" (1/1) ... [2020-09-24 20:22:51,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:51" (1/1) ... [2020-09-24 20:22:51,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:22:51,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:22:51,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:22:51,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:22:51,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:51" (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 20:22:51,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:22:51,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:22:51,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-09-24 20:22:51,272 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:22:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:22:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:22:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-09-24 20:22:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:22:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:22:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:22:51,549 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:22:51,550 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:22:51,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:22:51 BoogieIcfgContainer [2020-09-24 20:22:51,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:22:51,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:22:51,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:22:51,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:22:51,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:22:50" (1/3) ... [2020-09-24 20:22:51,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c35711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:22:51, skipping insertion in model container [2020-09-24 20:22:51,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:51" (2/3) ... [2020-09-24 20:22:51,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c35711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:22:51, skipping insertion in model container [2020-09-24 20:22:51,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:22:51" (3/3) ... [2020-09-24 20:22:51,591 INFO L109 eAbstractionObserver]: Analyzing ICFG Ackermann04.c [2020-09-24 20:22:51,618 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:22:51,645 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:22:51,665 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:22:51,697 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:22:51,698 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:22:51,698 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:22:51,698 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:22:51,698 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:22:51,698 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:22:51,699 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:22:51,699 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:22:51,724 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-24 20:22:51,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 20:22:51,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:51,733 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] [2020-09-24 20:22:51,734 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:51,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:51,741 INFO L82 PathProgramCache]: Analyzing trace with hash -852610024, now seen corresponding path program 1 times [2020-09-24 20:22:51,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:51,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899218147] [2020-09-24 20:22:51,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:51,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:52,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:52,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:22:52,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:52,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-24 20:22:52,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:52,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:22:52,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:22:52,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:22:52,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:22:52,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:22:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:52,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:52,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:52,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:22:52,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:52,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:22:52,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:52,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:22:52,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:52,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:22:52,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:52,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:22:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:52,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:52,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:52,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:22:52,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:52,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 20:22:52,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:52,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:22:52,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:52,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:22:52,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:52,319 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 20:22:52,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899218147] [2020-09-24 20:22:52,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:22:52,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:22:52,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102610801] [2020-09-24 20:22:52,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:22:52,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:22:52,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:22:52,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:22:52,355 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 5 states. [2020-09-24 20:22:52,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:22:52,538 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2020-09-24 20:22:52,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:22:52,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-09-24 20:22:52,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:22:52,557 INFO L225 Difference]: With dead ends: 88 [2020-09-24 20:22:52,557 INFO L226 Difference]: Without dead ends: 45 [2020-09-24 20:22:52,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:22:52,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-24 20:22:52,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-24 20:22:52,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-24 20:22:52,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-09-24 20:22:52,620 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 24 [2020-09-24 20:22:52,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:22:52,621 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-09-24 20:22:52,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:22:52,622 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-09-24 20:22:52,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 20:22:52,626 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:52,626 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:22:52,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:22:52,627 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:52,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:52,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1574290279, now seen corresponding path program 1 times [2020-09-24 20:22:52,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:52,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016479854] [2020-09-24 20:22:52,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:52,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:52,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:53,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:53,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 20:22:53,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:22:53,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-09-24 20:22:53,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:53,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:22:53,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:22:53,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 20:22:53,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:22:53,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:22:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:53,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:53,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:53,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:22:53,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:53,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:22:53,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:53,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:22:53,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:53,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:22:53,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:53,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:22:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:53,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:53,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:53,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:22:53,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:53,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-24 20:22:53,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:22:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 20:22:53,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:53,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:22:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:53,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:53,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:53,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:22:53,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:53,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 20:22:53,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:22:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:22:53,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:53,480 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 20:22:53,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016479854] [2020-09-24 20:22:53,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:22:53,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 20:22:53,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707445506] [2020-09-24 20:22:53,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:22:53,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:22:53,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:22:53,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:22:53,490 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 6 states. [2020-09-24 20:22:53,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:22:53,685 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-09-24 20:22:53,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:22:53,686 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-09-24 20:22:53,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:22:53,690 INFO L225 Difference]: With dead ends: 68 [2020-09-24 20:22:53,691 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 20:22:53,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:22:53,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 20:22:53,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-24 20:22:53,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 20:22:53,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2020-09-24 20:22:53,710 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 34 [2020-09-24 20:22:53,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:22:53,711 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2020-09-24 20:22:53,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:22:53,711 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2020-09-24 20:22:53,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 20:22:53,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:53,714 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-09-24 20:22:53,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:22:53,715 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:53,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:53,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1453709960, now seen corresponding path program 2 times [2020-09-24 20:22:53,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:53,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527815275] [2020-09-24 20:22:53,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:53,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:53,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:53,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:53,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 20:22:53,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:22:53,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-09-24 20:22:53,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:53,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:22:53,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:22:53,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 20:22:53,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:22:53,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:22:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:54,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:54,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:54,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:22:54,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:54,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:22:54,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:54,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:22:54,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:54,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:22:54,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:22:54,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:22:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:54,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:54,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:54,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:54,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 20:22:54,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:22:54,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-24 20:22:54,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:54,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:22:54,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:54,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 20:22:54,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:54,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:22:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:54,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:54,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:54,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:54,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:22:54,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:22:54,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 20:22:54,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:22:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 20:22:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:22:54,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:54,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:22:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:54,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:54,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:54,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:22:54,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:54,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:22:54,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:54,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:22:54,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:54,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:22:54,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:54,253 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 20:22:54,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527815275] [2020-09-24 20:22:54,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:22:54,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 20:22:54,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994596552] [2020-09-24 20:22:54,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:22:54,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:22:54,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:22:54,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:22:54,257 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand 5 states. [2020-09-24 20:22:54,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:22:54,350 INFO L93 Difference]: Finished difference Result 119 states and 178 transitions. [2020-09-24 20:22:54,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:22:54,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-09-24 20:22:54,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:22:54,354 INFO L225 Difference]: With dead ends: 119 [2020-09-24 20:22:54,354 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 20:22:54,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:22:54,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 20:22:54,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-24 20:22:54,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 20:22:54,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 88 transitions. [2020-09-24 20:22:54,375 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 88 transitions. Word has length 44 [2020-09-24 20:22:54,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:22:54,376 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 88 transitions. [2020-09-24 20:22:54,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:22:54,376 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 88 transitions. [2020-09-24 20:22:54,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-24 20:22:54,382 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:54,382 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:22:54,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:22:54,383 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:54,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:54,383 INFO L82 PathProgramCache]: Analyzing trace with hash 990403329, now seen corresponding path program 1 times [2020-09-24 20:22:54,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:54,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42995148] [2020-09-24 20:22:54,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:54,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:54,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:58,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:58,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-24 20:22:58,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:22:58,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4123 [2020-09-24 20:22:58,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:58,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:22:58,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 20:22:58,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:22:58,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:58,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:22:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:58,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:58,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:58,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:22:58,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:58,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:22:58,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:58,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:22:58,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:22:58,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:58,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:22:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:58,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:59,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:59,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-24 20:22:59,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:59,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-09-24 20:22:59,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:59,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:22:59,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 20:22:59,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:22:59,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:22:59,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:22:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:59,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:59,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:59,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 20:22:59,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:59,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-09-24 20:22:59,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:59,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:22:59,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:59,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 20:22:59,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:59,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:22:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:59,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:59,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:59,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:22:59,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:59,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-24 20:22:59,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:59,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:22:59,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:59,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:22:59,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:22:59,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:22:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:59,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:59,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:59,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:22:59,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:59,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 20:22:59,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:59,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:22:59,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:59,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:22:59,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:59,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:22:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:59,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:59,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:59,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:22:59,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:59,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:22:59,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:59,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:22:59,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:59,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:22:59,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:59,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 20:22:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:59,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:59,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:59,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:22:59,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:59,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:22:59,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:59,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:22:59,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:22:59,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:59,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 20:22:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:59,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:00,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:00,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:23:00,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:00,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 20:23:00,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:00,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:00,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 20:23:00,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:23:00,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:00,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:00,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:00,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:00,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:00,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:00,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:23:00,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:00,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:00,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:00,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:00,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:00,107 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 48 proven. 45 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-24 20:23:00,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42995148] [2020-09-24 20:23:00,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:00,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 20:23:00,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722677673] [2020-09-24 20:23:00,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 20:23:00,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:00,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 20:23:00,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:23:00,111 INFO L87 Difference]: Start difference. First operand 66 states and 88 transitions. Second operand 13 states. [2020-09-24 20:23:00,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:00,691 INFO L93 Difference]: Finished difference Result 178 states and 308 transitions. [2020-09-24 20:23:00,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 20:23:00,692 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 92 [2020-09-24 20:23:00,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:00,697 INFO L225 Difference]: With dead ends: 178 [2020-09-24 20:23:00,697 INFO L226 Difference]: Without dead ends: 125 [2020-09-24 20:23:00,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2020-09-24 20:23:00,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-24 20:23:00,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 107. [2020-09-24 20:23:00,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-24 20:23:00,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 171 transitions. [2020-09-24 20:23:00,723 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 171 transitions. Word has length 92 [2020-09-24 20:23:00,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:00,724 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 171 transitions. [2020-09-24 20:23:00,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 20:23:00,724 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 171 transitions. [2020-09-24 20:23:00,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-24 20:23:00,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:00,732 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:00,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:23:00,733 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:00,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:00,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1234816194, now seen corresponding path program 2 times [2020-09-24 20:23:00,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:00,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708799820] [2020-09-24 20:23:00,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:00,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:01,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-24 20:23:03,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:03,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2906 [2020-09-24 20:23:03,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:23:03,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 20:23:03,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 20:23:03,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:03,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:03,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:03,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:03,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:03,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:03,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:03,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:03,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-24 20:23:04,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:04,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 734 [2020-09-24 20:23:04,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:23:04,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 20:23:04,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 20:23:04,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:04,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 20:23:04,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:04,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-09-24 20:23:04,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:04,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 20:23:04,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:04,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:05,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:23:05,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:05,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-24 20:23:05,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:05,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:23:05,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:05,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:23:05,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:05,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:05,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:05,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:23:05,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:05,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 20:23:05,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:05,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:05,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:05,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:23:05,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:05,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:05,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:05,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:05,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:05,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:23:05,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:05,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:05,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:05,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:05,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:05,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 20:23:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:05,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:05,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:05,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:05,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:23:05,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:05,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:05,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:05,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:05,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:05,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 20:23:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:05,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:05,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:23:05,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:05,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-24 20:23:05,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:05,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:05,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 20:23:05,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:23:05,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:05,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:05,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:05,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:23:05,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:05,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 20:23:05,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 20:23:05,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:05,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:05,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:05,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:05,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:05,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:23:05,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:05,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:05,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:05,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 20:23:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:05,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:05,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:05,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:05,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:23:05,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:05,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:05,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:05,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:05,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:05,536 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 73 proven. 82 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-09-24 20:23:05,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708799820] [2020-09-24 20:23:05,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:05,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 20:23:05,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251244199] [2020-09-24 20:23:05,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 20:23:05,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:05,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 20:23:05,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:23:05,540 INFO L87 Difference]: Start difference. First operand 107 states and 171 transitions. Second operand 14 states. [2020-09-24 20:23:06,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:06,531 INFO L93 Difference]: Finished difference Result 306 states and 647 transitions. [2020-09-24 20:23:06,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-24 20:23:06,532 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 111 [2020-09-24 20:23:06,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:06,548 INFO L225 Difference]: With dead ends: 306 [2020-09-24 20:23:06,548 INFO L226 Difference]: Without dead ends: 212 [2020-09-24 20:23:06,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=319, Invalid=1163, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 20:23:06,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-09-24 20:23:06,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 168. [2020-09-24 20:23:06,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-09-24 20:23:06,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 312 transitions. [2020-09-24 20:23:06,623 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 312 transitions. Word has length 111 [2020-09-24 20:23:06,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:06,625 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 312 transitions. [2020-09-24 20:23:06,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 20:23:06,626 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 312 transitions. [2020-09-24 20:23:06,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-09-24 20:23:06,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:06,639 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:06,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:23:06,640 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:06,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:06,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1430781353, now seen corresponding path program 3 times [2020-09-24 20:23:06,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:06,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441308457] [2020-09-24 20:23:06,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:06,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:07,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-24 20:23:10,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:10,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3553 [2020-09-24 20:23:10,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 20:23:10,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 20:23:10,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 20:23:10,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:10,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:10,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:10,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:23:10,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:10,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:10,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:10,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:10,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:11,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-24 20:23:11,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:11,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 858 [2020-09-24 20:23:11,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:11,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 20:23:11,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 20:23:11,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 20:23:11,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:11,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:11,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:11,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 20:23:11,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:11,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-09-24 20:23:11,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:11,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:11,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:11,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 20:23:11,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:11,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:11,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:11,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:23:11,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:11,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-24 20:23:11,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:11,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:23:11,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:11,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:23:11,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:11,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:11,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:11,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:23:11,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:11,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 20:23:11,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:11,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:11,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:11,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:23:11,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:11,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:11,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:11,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:11,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:11,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:23:11,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:11,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:11,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:11,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:11,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:11,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 20:23:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:11,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:11,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:11,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:11,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:23:11,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:11,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:11,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:11,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:11,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:11,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 20:23:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:11,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:12,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 20:23:12,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:12,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-24 20:23:12,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:12,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:12,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 20:23:12,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 20:23:12,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:12,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:12,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:12,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:23:12,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:12,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-24 20:23:12,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:12,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:12,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:12,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 20:23:12,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:12,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:12,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:12,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:23:12,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:12,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 20:23:12,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:12,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:12,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:12,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 20:23:12,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:12,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:12,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:12,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:12,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:12,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:23:12,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:12,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:12,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:12,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:12,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:12,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 20:23:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:12,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:12,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:12,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:12,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:23:12,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:12,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:12,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:12,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:12,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:12,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-24 20:23:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:12,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:12,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:12,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:12,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:23:12,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:12,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:12,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:12,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:12,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:12,527 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 98 proven. 144 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2020-09-24 20:23:12,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441308457] [2020-09-24 20:23:12,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:12,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 20:23:12,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770175305] [2020-09-24 20:23:12,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 20:23:12,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:12,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 20:23:12,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-09-24 20:23:12,531 INFO L87 Difference]: Start difference. First operand 168 states and 312 transitions. Second operand 18 states. [2020-09-24 20:23:14,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:14,347 INFO L93 Difference]: Finished difference Result 564 states and 1306 transitions. [2020-09-24 20:23:14,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-09-24 20:23:14,348 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 130 [2020-09-24 20:23:14,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:14,366 INFO L225 Difference]: With dead ends: 564 [2020-09-24 20:23:14,367 INFO L226 Difference]: Without dead ends: 409 [2020-09-24 20:23:14,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=532, Invalid=2660, Unknown=0, NotChecked=0, Total=3192 [2020-09-24 20:23:14,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-09-24 20:23:14,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 283. [2020-09-24 20:23:14,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-09-24 20:23:14,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 650 transitions. [2020-09-24 20:23:14,450 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 650 transitions. Word has length 130 [2020-09-24 20:23:14,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:14,452 INFO L479 AbstractCegarLoop]: Abstraction has 283 states and 650 transitions. [2020-09-24 20:23:14,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 20:23:14,452 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 650 transitions. [2020-09-24 20:23:14,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-24 20:23:14,462 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:14,462 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:14,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:23:14,463 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:14,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:14,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1512245041, now seen corresponding path program 4 times [2020-09-24 20:23:14,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:14,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390608149] [2020-09-24 20:23:14,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:14,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:15,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:18,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:18,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:19,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:19,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-24 20:23:19,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 20:23:19,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-24 20:23:19,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:19,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:23:19,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 20:23:19,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 20:23:19,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:19,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:19,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:19,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:19,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:19,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:19,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:19,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:19,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:19,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:19,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:19,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:19,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:19,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:19,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:19,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:19,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:19,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:20,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:24,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:24,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-24 20:23:24,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:23:24,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 20:23:24,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:24,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:24,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 20:23:24,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 20:23:24,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:24,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:24,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:24,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:24,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:24,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:24,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:27,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:29,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-24 20:23:29,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:23:29,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 20:23:29,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:29,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:29,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 20:23:29,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 20:23:29,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:29,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:29,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:30,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:30,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:34,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 20:23:34,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:23:34,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 20:23:34,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:34,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:34,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 20:23:34,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 20:23:34,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:34,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:34,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:34,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:23:34,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:34,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 20:23:34,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:34,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:34,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:34,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:23:34,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:34,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:34,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:34,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:34,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:34,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:23:34,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:34,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:34,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 20:23:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:34,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:35,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:23:35,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:23:35,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1038 [2020-09-24 20:23:35,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:35,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:23:35,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 20:23:35,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:23:35,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:35,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:35,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:35,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:35,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:35,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 20:23:35,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:35,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:35,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:35,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:35,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:23:35,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:35,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 20:23:35,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:35,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:35,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:35,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 20:23:35,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:35,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:35,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:35,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:35,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:35,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:23:35,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:35,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:35,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:35,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:35,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:35,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-24 20:23:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:35,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:35,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:23:35,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:35,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 20:23:35,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:35,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:35,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 20:23:35,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:35,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:35,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:35,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:35,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:35,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:35,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:23:35,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:35,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:35,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:35,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:35,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:36,001 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 102 proven. 79 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-09-24 20:23:36,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390608149] [2020-09-24 20:23:36,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:36,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 20:23:36,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697451685] [2020-09-24 20:23:36,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 20:23:36,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:36,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 20:23:36,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:23:36,004 INFO L87 Difference]: Start difference. First operand 283 states and 650 transitions. Second operand 13 states. [2020-09-24 20:23:36,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:36,581 INFO L93 Difference]: Finished difference Result 679 states and 2195 transitions. [2020-09-24 20:23:36,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 20:23:36,582 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 121 [2020-09-24 20:23:36,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:36,596 INFO L225 Difference]: With dead ends: 679 [2020-09-24 20:23:36,596 INFO L226 Difference]: Without dead ends: 371 [2020-09-24 20:23:36,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2020-09-24 20:23:36,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-09-24 20:23:36,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 310. [2020-09-24 20:23:36,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-09-24 20:23:36,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 770 transitions. [2020-09-24 20:23:36,652 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 770 transitions. Word has length 121 [2020-09-24 20:23:36,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:36,652 INFO L479 AbstractCegarLoop]: Abstraction has 310 states and 770 transitions. [2020-09-24 20:23:36,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 20:23:36,653 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 770 transitions. [2020-09-24 20:23:36,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-24 20:23:36,661 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:36,661 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 8, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:36,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:23:36,662 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:36,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:36,662 INFO L82 PathProgramCache]: Analyzing trace with hash -736640086, now seen corresponding path program 5 times [2020-09-24 20:23:36,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:36,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416837889] [2020-09-24 20:23:36,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:36,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:37,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-24 20:23:37,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:37,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-24 20:23:37,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:37,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:23:37,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-09-24 20:23:37,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:37,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:37,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:37,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:37,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:37,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:37,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:37,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:37,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:37,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:37,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:37,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:37,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:37,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-24 20:23:37,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:37,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-09-24 20:23:37,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:37,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:37,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:37,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-09-24 20:23:37,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:37,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:37,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:37,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 20:23:37,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:37,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 20:23:37,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:37,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:37,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:37,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 20:23:37,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:37,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:37,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:37,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:23:37,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:37,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 20:23:37,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:37,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:37,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:37,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 20:23:37,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:37,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:37,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:37,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:23:37,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:37,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:23:37,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:37,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:37,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:37,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:37,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:37,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:37,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:37,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:37,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:37,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:23:37,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:37,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:37,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:37,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:37,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:37,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 20:23:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:37,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:37,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:37,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:37,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:23:37,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:37,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:37,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:37,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:37,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:37,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 20:23:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:37,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:37,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-24 20:23:37,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:37,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 20:23:37,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:37,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:37,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:37,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-24 20:23:37,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:37,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:37,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:37,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 20:23:37,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:37,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 20:23:37,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:37,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:37,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:37,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:37,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:37,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:37,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:37,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:23:37,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:37,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:23:37,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:37,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:37,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:37,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:37,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:37,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:37,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:37,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:23:37,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:37,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:23:37,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:37,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:37,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:37,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:37,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:37,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:37,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:37,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:37,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:37,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:23:37,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:37,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:37,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:37,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:37,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:37,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 20:23:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:37,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:37,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:37,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:37,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:23:37,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:37,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:37,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:37,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:37,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:37,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-24 20:23:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:37,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:37,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:37,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:37,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:23:37,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:37,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:37,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:37,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:37,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:37,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-24 20:23:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:37,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:37,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:37,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:37,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:23:37,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:37,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:37,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:37,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:37,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:37,834 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 53 proven. 71 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2020-09-24 20:23:37,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416837889] [2020-09-24 20:23:37,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:37,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 20:23:37,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680158978] [2020-09-24 20:23:37,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:23:37,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:37,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:23:37,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:23:37,836 INFO L87 Difference]: Start difference. First operand 310 states and 770 transitions. Second operand 7 states. [2020-09-24 20:23:37,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:37,967 INFO L93 Difference]: Finished difference Result 316 states and 775 transitions. [2020-09-24 20:23:37,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 20:23:37,968 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2020-09-24 20:23:37,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:37,983 INFO L225 Difference]: With dead ends: 316 [2020-09-24 20:23:37,983 INFO L226 Difference]: Without dead ends: 310 [2020-09-24 20:23:37,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:23:37,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-09-24 20:23:38,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2020-09-24 20:23:38,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-09-24 20:23:38,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 767 transitions. [2020-09-24 20:23:38,026 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 767 transitions. Word has length 149 [2020-09-24 20:23:38,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:38,027 INFO L479 AbstractCegarLoop]: Abstraction has 310 states and 767 transitions. [2020-09-24 20:23:38,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:23:38,027 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 767 transitions. [2020-09-24 20:23:38,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2020-09-24 20:23:38,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:38,052 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 53, 31, 22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:38,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:23:38,053 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:38,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:38,053 INFO L82 PathProgramCache]: Analyzing trace with hash 707752195, now seen corresponding path program 6 times [2020-09-24 20:23:38,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:38,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184626815] [2020-09-24 20:23:38,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:38,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:38,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:38,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:38,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:38,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:40,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking...