/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-simple/id_i20_o20-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:26:06,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:26:06,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:26:06,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:26:06,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:26:06,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:26:06,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:26:06,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:26:06,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:26:06,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:26:06,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:26:06,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:26:06,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:26:06,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:26:06,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:26:06,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:26:06,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:26:06,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:26:06,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:26:06,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:26:06,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:26:06,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:26:06,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:26:06,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:26:06,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:26:06,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:26:06,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:26:06,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:26:06,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:26:06,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:26:06,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:26:06,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:26:06,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:26:06,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:26:06,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:26:06,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:26:06,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:26:06,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:26:06,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:26:06,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:26:06,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:26:06,459 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 20:26:06,505 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:26:06,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:26:06,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:26:06,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:26:06,508 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:26:06,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:26:06,508 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:26:06,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:26:06,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:26:06,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:26:06,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:26:06,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:26:06,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:26:06,511 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:26:06,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:26:06,511 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:26:06,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:26:06,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:26:06,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:26:06,512 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:26:06,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:26:06,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:26:06,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:26:06,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:26:06,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:26:06,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:26:06,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:26:06,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:26:06,514 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:26:06,514 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 20:26:06,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:26:06,995 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:26:06,999 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:26:07,002 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:26:07,002 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:26:07,003 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i20_o20-2.c [2020-09-24 20:26:07,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cff282d4/04de3368128b4ec29fe1ddffe8da14e0/FLAG761e7647a [2020-09-24 20:26:07,591 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:26:07,592 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i20_o20-2.c [2020-09-24 20:26:07,600 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cff282d4/04de3368128b4ec29fe1ddffe8da14e0/FLAG761e7647a [2020-09-24 20:26:07,948 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cff282d4/04de3368128b4ec29fe1ddffe8da14e0 [2020-09-24 20:26:07,961 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:26:07,966 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:26:07,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:26:07,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:26:07,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:26:07,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:26:07" (1/1) ... [2020-09-24 20:26:07,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd8ad23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:07, skipping insertion in model container [2020-09-24 20:26:07,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:26:07" (1/1) ... [2020-09-24 20:26:07,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:26:08,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:26:08,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:26:08,220 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:26:08,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:26:08,255 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:26:08,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:08 WrapperNode [2020-09-24 20:26:08,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:26:08,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:26:08,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:26:08,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:26:08,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:08" (1/1) ... [2020-09-24 20:26:08,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:08" (1/1) ... [2020-09-24 20:26:08,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:08" (1/1) ... [2020-09-24 20:26:08,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:08" (1/1) ... [2020-09-24 20:26:08,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:08" (1/1) ... [2020-09-24 20:26:08,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:08" (1/1) ... [2020-09-24 20:26:08,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:08" (1/1) ... [2020-09-24 20:26:08,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:26:08,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:26:08,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:26:08,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:26:08,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:08" (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 20:26:08,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:26:08,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:26:08,423 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 20:26:08,423 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:26:08,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:26:08,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:26:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 20:26:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:26:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:26:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:26:08,626 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:26:08,626 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:26:08,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:26:08 BoogieIcfgContainer [2020-09-24 20:26:08,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:26:08,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:26:08,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:26:08,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:26:08,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:26:07" (1/3) ... [2020-09-24 20:26:08,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e3b609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:26:08, skipping insertion in model container [2020-09-24 20:26:08,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:26:08" (2/3) ... [2020-09-24 20:26:08,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e3b609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:26:08, skipping insertion in model container [2020-09-24 20:26:08,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:26:08" (3/3) ... [2020-09-24 20:26:08,668 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i20_o20-2.c [2020-09-24 20:26:08,697 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:26:08,708 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:26:08,737 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:26:08,763 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:26:08,763 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:26:08,764 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:26:08,764 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:26:08,764 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:26:08,765 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:26:08,765 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:26:08,765 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:26:08,784 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-24 20:26:08,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 20:26:08,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:08,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:08,792 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:08,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:08,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1037734449, now seen corresponding path program 1 times [2020-09-24 20:26:08,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:08,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509561441] [2020-09-24 20:26:08,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:08,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:08,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:09,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:09,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 20:26:09,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:09,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-24 20:26:09,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:09,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:26:09,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 20:26:09,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:26:09,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 20:26:09,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:09,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:09,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:09,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:09,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:09,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:26:09,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:09,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:09,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:09,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:09,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:09,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:09,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:09,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:09,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:09,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:09,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 20:26:09,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:09,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:09,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:09,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:09,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:09,260 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 20:26:09,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509561441] [2020-09-24 20:26:09,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:26:09,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:26:09,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729606213] [2020-09-24 20:26:09,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:26:09,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:09,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:26:09,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:26:09,292 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-24 20:26:09,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:09,380 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-24 20:26:09,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:26:09,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 20:26:09,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:09,397 INFO L225 Difference]: With dead ends: 37 [2020-09-24 20:26:09,397 INFO L226 Difference]: Without dead ends: 23 [2020-09-24 20:26:09,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:26:09,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-24 20:26:09,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-24 20:26:09,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-24 20:26:09,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-09-24 20:26:09,452 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2020-09-24 20:26:09,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:09,452 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-09-24 20:26:09,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:26:09,453 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-09-24 20:26:09,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 20:26:09,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:09,455 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:09,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:26:09,456 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:09,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:09,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1478812441, now seen corresponding path program 1 times [2020-09-24 20:26:09,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:09,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36711193] [2020-09-24 20:26:09,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:09,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:09,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:09,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:09,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 20:26:09,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:09,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-09-24 20:26:09,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:09,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:26:09,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 20:26:09,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:26:09,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:26:09,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:09,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:09,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:09,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:09,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:09,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:26:09,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:09,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:09,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:09,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:09,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:09,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:09,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:09,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:09,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:26:09,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:09,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 20:26:09,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:09,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:09,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:09,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:26:09,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:10,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:10,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:10,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:10,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:10,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:10,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:26:10,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:10,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:10,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:10,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:10,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:10,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 20:26:10,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36711193] [2020-09-24 20:26:10,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:10,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 20:26:10,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914059877] [2020-09-24 20:26:10,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:26:10,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:10,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:26:10,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:26:10,067 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-09-24 20:26:10,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:10,133 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-09-24 20:26:10,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 20:26:10,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-24 20:26:10,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:10,135 INFO L225 Difference]: With dead ends: 34 [2020-09-24 20:26:10,135 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 20:26:10,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:26:10,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 20:26:10,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 20:26:10,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 20:26:10,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-24 20:26:10,144 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2020-09-24 20:26:10,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:10,145 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-24 20:26:10,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:26:10,145 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-24 20:26:10,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 20:26:10,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:10,147 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:10,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:26:10,147 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:10,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:10,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1463730447, now seen corresponding path program 2 times [2020-09-24 20:26:10,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:10,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711845303] [2020-09-24 20:26:10,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:10,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:10,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:10,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:10,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 20:26:10,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:10,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 549 [2020-09-24 20:26:10,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:26:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 20:26:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:26:10,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:10,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:10,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:10,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:10,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:10,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:10,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:10,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:10,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:10,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:10,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:10,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:10,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:10,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:10,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:10,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 20:26:10,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:10,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 20:26:10,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:10,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:10,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:10,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 20:26:10,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:10,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:10,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:10,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:10,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:26:10,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:10,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 20:26:10,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:10,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:10,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:10,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:26:10,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:10,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:10,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:10,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:10,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:10,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:10,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:26:10,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:10,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:10,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:10,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:10,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:10,958 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 20:26:10,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711845303] [2020-09-24 20:26:10,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:10,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 20:26:10,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509914033] [2020-09-24 20:26:10,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:26:10,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:10,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:26:10,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:26:10,961 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 9 states. [2020-09-24 20:26:11,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:11,040 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-24 20:26:11,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 20:26:11,041 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-24 20:26:11,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:11,042 INFO L225 Difference]: With dead ends: 39 [2020-09-24 20:26:11,042 INFO L226 Difference]: Without dead ends: 33 [2020-09-24 20:26:11,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:26:11,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-24 20:26:11,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-24 20:26:11,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-24 20:26:11,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-24 20:26:11,050 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2020-09-24 20:26:11,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:11,052 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-24 20:26:11,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:26:11,052 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-24 20:26:11,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 20:26:11,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:11,055 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:11,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:26:11,056 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:11,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:11,057 INFO L82 PathProgramCache]: Analyzing trace with hash 23346727, now seen corresponding path program 3 times [2020-09-24 20:26:11,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:11,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716776052] [2020-09-24 20:26:11,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:11,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:11,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:11,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:11,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:26:11,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:11,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 905 [2020-09-24 20:26:11,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:11,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:26:11,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 20:26:11,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 20:26:11,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:12,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:12,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:12,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:12,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:12,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:26:12,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:12,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:12,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:12,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:12,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:12,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:12,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:12,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 20:26:12,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:12,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-24 20:26:12,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:12,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:12,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 20:26:12,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:12,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:12,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:12,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 20:26:12,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:12,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 20:26:12,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:12,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:12,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:12,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 20:26:12,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:12,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:12,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:12,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:26:12,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:12,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 20:26:12,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:12,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:12,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:12,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:26:12,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:12,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:12,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:12,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:12,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:12,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:26:12,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:12,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:12,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:12,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:12,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:12,383 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 20:26:12,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716776052] [2020-09-24 20:26:12,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:12,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 20:26:12,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970178472] [2020-09-24 20:26:12,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:26:12,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:12,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:26:12,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:26:12,387 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2020-09-24 20:26:12,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:12,501 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-09-24 20:26:12,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 20:26:12,501 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-09-24 20:26:12,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:12,503 INFO L225 Difference]: With dead ends: 44 [2020-09-24 20:26:12,503 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 20:26:12,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:26:12,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 20:26:12,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-24 20:26:12,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 20:26:12,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-24 20:26:12,511 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 40 [2020-09-24 20:26:12,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:12,512 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-24 20:26:12,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:26:12,512 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-24 20:26:12,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 20:26:12,514 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:12,514 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:12,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:26:12,514 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:12,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:12,515 INFO L82 PathProgramCache]: Analyzing trace with hash -649675855, now seen corresponding path program 4 times [2020-09-24 20:26:12,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:12,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231463722] [2020-09-24 20:26:12,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:12,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:13,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 20:26:13,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:13,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1380 [2020-09-24 20:26:13,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:13,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:26:13,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-24 20:26:13,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 20:26:13,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:13,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:13,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:13,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:13,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:13,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:13,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:13,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:13,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:13,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:13,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:13,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:13,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:14,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:14,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:26:14,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:14,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-24 20:26:14,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:14,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:26:14,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:14,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 20:26:14,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:14,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:14,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:14,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:14,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 20:26:14,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:14,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-24 20:26:14,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:14,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:14,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:14,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 20:26:14,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:14,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:14,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:14,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:14,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 20:26:14,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:14,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 20:26:14,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:14,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:14,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:14,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 20:26:14,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:14,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:14,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:14,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:14,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:26:14,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:14,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 20:26:14,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:14,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:14,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:14,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:26:14,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:14,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:14,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:14,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:14,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:14,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:14,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:26:14,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:14,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:14,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:14,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:14,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:14,545 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-24 20:26:14,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231463722] [2020-09-24 20:26:14,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:14,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 20:26:14,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718752779] [2020-09-24 20:26:14,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 20:26:14,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:14,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 20:26:14,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:26:14,548 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 13 states. [2020-09-24 20:26:14,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:14,673 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-24 20:26:14,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 20:26:14,673 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-09-24 20:26:14,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:14,675 INFO L225 Difference]: With dead ends: 49 [2020-09-24 20:26:14,675 INFO L226 Difference]: Without dead ends: 43 [2020-09-24 20:26:14,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-09-24 20:26:14,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-24 20:26:14,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-24 20:26:14,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-24 20:26:14,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-24 20:26:14,690 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 48 [2020-09-24 20:26:14,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:14,690 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-24 20:26:14,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 20:26:14,690 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-24 20:26:14,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 20:26:14,694 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:14,694 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:14,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:26:14,694 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:14,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:14,695 INFO L82 PathProgramCache]: Analyzing trace with hash 899977063, now seen corresponding path program 5 times [2020-09-24 20:26:14,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:14,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402742048] [2020-09-24 20:26:14,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:14,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:14,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:16,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:16,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 20:26:16,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:16,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1949 [2020-09-24 20:26:16,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:16,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 20:26:16,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 20:26:16,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 20:26:16,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:16,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:16,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:16,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:16,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:16,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:16,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:16,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:16,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:16,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:16,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:16,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:16,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:16,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:16,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:16,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 20:26:16,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:16,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-24 20:26:16,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:16,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:26:16,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:16,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 20:26:16,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:16,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:16,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:17,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:17,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:26:17,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:17,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-24 20:26:17,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:17,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:26:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 20:26:17,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:17,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:17,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:17,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:17,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 20:26:17,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:17,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 20:26:17,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:17,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:17,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:17,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 20:26:17,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:17,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:17,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:17,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:17,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 20:26:17,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:17,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 20:26:17,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:17,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:17,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:17,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 20:26:17,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:17,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:17,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:17,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:17,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:26:17,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:17,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 20:26:17,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:17,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:17,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:17,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:26:17,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:17,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:17,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:17,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:17,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:17,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:17,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:26:17,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:17,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:17,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:17,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:17,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:17,467 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-24 20:26:17,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402742048] [2020-09-24 20:26:17,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:17,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 20:26:17,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371823030] [2020-09-24 20:26:17,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 20:26:17,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:17,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 20:26:17,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:26:17,470 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 15 states. [2020-09-24 20:26:17,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:17,601 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-09-24 20:26:17,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 20:26:17,602 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-24 20:26:17,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:17,603 INFO L225 Difference]: With dead ends: 54 [2020-09-24 20:26:17,604 INFO L226 Difference]: Without dead ends: 48 [2020-09-24 20:26:17,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2020-09-24 20:26:17,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-24 20:26:17,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-24 20:26:17,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 20:26:17,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-09-24 20:26:17,611 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 56 [2020-09-24 20:26:17,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:17,612 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-09-24 20:26:17,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 20:26:17,612 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-09-24 20:26:17,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 20:26:17,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:17,614 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:17,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:26:17,615 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:17,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:17,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1000802417, now seen corresponding path program 6 times [2020-09-24 20:26:17,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:17,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972757662] [2020-09-24 20:26:17,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:17,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:17,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:20,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:20,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 20:26:20,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:20,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2593 [2020-09-24 20:26:20,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:20,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:26:20,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:26:20,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 20:26:20,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:20,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:20,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:20,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:20,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:20,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:20,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:20,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:20,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:20,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:20,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:20,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:20,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:20,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:20,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:20,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 20:26:20,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:20,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-09-24 20:26:20,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:20,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:26:20,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:26:20,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 20:26:20,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:20,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:20,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:20,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:20,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 20:26:20,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:20,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-09-24 20:26:20,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:20,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:26:20,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:20,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 20:26:20,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:20,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:20,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:21,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:21,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:26:21,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:21,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-24 20:26:21,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:21,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:26:21,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:21,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 20:26:21,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:21,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:21,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:21,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:21,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 20:26:21,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:21,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-24 20:26:21,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:21,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:26:21,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:21,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 20:26:21,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:21,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:21,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:21,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:21,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 20:26:21,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:21,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 20:26:21,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:21,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:21,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:21,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:26:21,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:21,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:21,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:21,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:21,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:26:21,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:21,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 20:26:21,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:21,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:21,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:21,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:26:21,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:21,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:21,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:21,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:21,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:21,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:21,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:26:21,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:21,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:21,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:21,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:26:21,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:21,443 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 15 proven. 87 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-09-24 20:26:21,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972757662] [2020-09-24 20:26:21,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:21,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 20:26:21,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050840911] [2020-09-24 20:26:21,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:26:21,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:21,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:26:21,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:26:21,448 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 12 states. [2020-09-24 20:26:21,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:21,591 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-24 20:26:21,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 20:26:21,592 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-09-24 20:26:21,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:21,593 INFO L225 Difference]: With dead ends: 59 [2020-09-24 20:26:21,593 INFO L226 Difference]: Without dead ends: 53 [2020-09-24 20:26:21,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-09-24 20:26:21,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-24 20:26:21,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-24 20:26:21,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 20:26:21,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-09-24 20:26:21,602 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 64 [2020-09-24 20:26:21,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:21,603 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-09-24 20:26:21,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:26:21,603 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-09-24 20:26:21,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 20:26:21,604 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:21,604 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:21,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:26:21,605 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:21,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:21,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1977618599, now seen corresponding path program 7 times [2020-09-24 20:26:21,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:21,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914685459] [2020-09-24 20:26:21,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:21,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:21,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:25,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:25,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 20:26:25,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:25,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3458 [2020-09-24 20:26:25,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:25,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 20:26:25,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:26:25,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 20:26:25,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:25,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:25,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:25,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:25,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:25,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:25,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:25,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:25,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:25,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:25,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:25,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:25,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:25,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:25,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:25,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 20:26:25,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:25,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-09-24 20:26:25,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:25,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 20:26:25,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:26:25,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 20:26:25,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:25,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:25,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:25,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:25,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 20:26:25,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:25,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-09-24 20:26:25,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:25,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:26:25,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:25,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 20:26:25,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:25,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:25,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:26,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:26,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 20:26:26,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:26,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-24 20:26:26,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:26,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:26:26,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:26,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 20:26:26,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:26,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:26,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:26,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:26,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:26:26,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:26,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-24 20:26:26,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:26,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:26:26,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:26,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 20:26:26,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:26,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:26,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:26,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:26,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 20:26:26,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:26,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 20:26:26,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:26:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:26,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 20:26:26,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:26,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:26,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:26,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:26,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 20:26:26,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:26,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 20:26:26,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:26,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:26,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:26,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:26:26,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:26,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:26,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:26,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:26,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:26:26,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:26,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 20:26:26,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:26,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:26,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:26,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:26:26,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:26,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:26,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:26,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:26,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:26,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:26,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:26:26,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:26,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:26,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:26:26,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:26,658 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 8 proven. 139 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-09-24 20:26:26,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914685459] [2020-09-24 20:26:26,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:26,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 20:26:26,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205899093] [2020-09-24 20:26:26,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 20:26:26,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:26,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 20:26:26,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:26:26,662 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 13 states. [2020-09-24 20:26:26,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:26,828 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-09-24 20:26:26,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 20:26:26,829 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 72 [2020-09-24 20:26:26,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:26,830 INFO L225 Difference]: With dead ends: 64 [2020-09-24 20:26:26,830 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 20:26:26,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-09-24 20:26:26,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 20:26:26,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-24 20:26:26,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 20:26:26,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-24 20:26:26,839 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 72 [2020-09-24 20:26:26,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:26,839 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-24 20:26:26,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 20:26:26,840 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-24 20:26:26,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 20:26:26,841 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:26,841 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:26,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:26:26,842 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:26,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:26,842 INFO L82 PathProgramCache]: Analyzing trace with hash 555623729, now seen corresponding path program 8 times [2020-09-24 20:26:26,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:26,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786351991] [2020-09-24 20:26:26,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:26,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:27,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:31,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:31,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-24 20:26:31,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:31,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4511 [2020-09-24 20:26:31,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:31,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 20:26:31,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-24 20:26:31,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 20:26:31,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:31,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:31,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:31,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:31,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:31,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:31,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:26:31,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:31,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:31,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:31,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:31,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:31,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:31,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:31,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:31,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 20:26:31,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:31,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-09-24 20:26:31,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:31,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:26:31,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:31,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 20:26:31,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:31,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:31,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:32,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:32,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 20:26:32,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:32,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-09-24 20:26:32,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:32,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:26:32,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:32,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 20:26:32,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:32,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:32,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:32,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:32,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 20:26:32,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:32,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-24 20:26:32,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:32,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:26:32,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:32,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 20:26:32,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:32,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:32,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:32,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:32,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 20:26:32,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:32,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-24 20:26:32,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:32,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:26:32,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:32,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 20:26:32,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:32,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:32,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:32,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:32,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:26:32,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:32,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-24 20:26:32,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:32,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:26:32,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:32,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 20:26:32,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:32,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:32,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:32,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:32,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 20:26:32,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:32,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 20:26:32,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:32,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:32,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:32,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 20:26:32,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:32,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:32,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:32,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:32,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 20:26:32,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:32,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 20:26:32,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:32,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:32,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:32,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 20:26:32,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:32,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:32,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:33,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:33,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:26:33,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:33,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 20:26:33,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:33,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:33,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:33,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:26:33,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:33,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:33,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:33,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:33,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:33,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:33,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:26:33,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:33,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:33,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:33,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:33,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:33,126 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-24 20:26:33,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786351991] [2020-09-24 20:26:33,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:33,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 20:26:33,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619914530] [2020-09-24 20:26:33,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 20:26:33,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:33,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 20:26:33,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-24 20:26:33,129 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 21 states. [2020-09-24 20:26:33,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:33,288 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-09-24 20:26:33,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 20:26:33,289 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 80 [2020-09-24 20:26:33,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:33,290 INFO L225 Difference]: With dead ends: 69 [2020-09-24 20:26:33,290 INFO L226 Difference]: Without dead ends: 63 [2020-09-24 20:26:33,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2020-09-24 20:26:33,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-24 20:26:33,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-24 20:26:33,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-24 20:26:33,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-09-24 20:26:33,305 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2020-09-24 20:26:33,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:33,305 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-09-24 20:26:33,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 20:26:33,305 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-09-24 20:26:33,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-24 20:26:33,307 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:33,308 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:33,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:26:33,308 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:33,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:33,308 INFO L82 PathProgramCache]: Analyzing trace with hash 777699815, now seen corresponding path program 9 times [2020-09-24 20:26:33,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:33,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795943000] [2020-09-24 20:26:33,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:33,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:33,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:38,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:38,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-24 20:26:38,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:38,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:26:38,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:38,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 20:26:38,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-24 20:26:38,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:26:38,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:38,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:38,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:38,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:38,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:38,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:38,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:38,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:38,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:38,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:38,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:38,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:38,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:38,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:38,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:38,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 20:26:38,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:38,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-09-24 20:26:38,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:38,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 20:26:38,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:38,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 20:26:38,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:38,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:38,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:39,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:39,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 20:26:39,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:39,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-09-24 20:26:39,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:39,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:26:39,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:39,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 20:26:39,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:39,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:39,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:39,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:39,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 20:26:39,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:39,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-09-24 20:26:39,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:39,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:26:39,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:39,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 20:26:39,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:39,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:39,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:39,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:39,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 20:26:39,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:39,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-24 20:26:39,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:39,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:26:39,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:39,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 20:26:39,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:39,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:39,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:39,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:39,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 20:26:39,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:39,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-24 20:26:39,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:26:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 20:26:39,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:39,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:39,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:40,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:40,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:26:40,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:40,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-24 20:26:40,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:40,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:26:40,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:40,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 20:26:40,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:40,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:40,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:40,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:40,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 20:26:40,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:40,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 20:26:40,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:40,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:40,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:40,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 20:26:40,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:40,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:40,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:40,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:40,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 20:26:40,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:40,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 20:26:40,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:40,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:40,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:40,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 20:26:40,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:40,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:40,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:40,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:40,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:26:40,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:40,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 20:26:40,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:40,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:40,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:40,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:26:40,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:40,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:40,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:40,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:40,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:40,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:40,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:26:40,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:40,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:40,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:40,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:40,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:40,469 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-24 20:26:40,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795943000] [2020-09-24 20:26:40,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:40,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 20:26:40,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701709164] [2020-09-24 20:26:40,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 20:26:40,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:40,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 20:26:40,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-09-24 20:26:40,480 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 23 states. [2020-09-24 20:26:40,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:40,726 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-09-24 20:26:40,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-24 20:26:40,727 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 88 [2020-09-24 20:26:40,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:40,728 INFO L225 Difference]: With dead ends: 74 [2020-09-24 20:26:40,728 INFO L226 Difference]: Without dead ends: 68 [2020-09-24 20:26:40,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=272, Invalid=784, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 20:26:40,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-24 20:26:40,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-24 20:26:40,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-24 20:26:40,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-09-24 20:26:40,747 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 88 [2020-09-24 20:26:40,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:40,747 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-09-24 20:26:40,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 20:26:40,747 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-09-24 20:26:40,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-24 20:26:40,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:40,748 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:40,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 20:26:40,752 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:40,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:40,752 INFO L82 PathProgramCache]: Analyzing trace with hash 2145915377, now seen corresponding path program 10 times [2020-09-24 20:26:40,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:40,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328196235] [2020-09-24 20:26:40,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:40,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:41,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:45,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:45,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 20:26:45,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:45,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:26:45,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:45,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 20:26:45,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-24 20:26:45,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 20:26:45,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:45,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:45,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:45,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:45,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:45,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:45,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:26:45,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:45,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:45,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:45,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:45,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:45,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:45,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:46,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:46,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 20:26:46,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:46,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-09-24 20:26:46,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:46,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 20:26:46,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:46,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 20:26:46,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:46,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:46,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:46,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:46,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 20:26:46,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:46,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-09-24 20:26:46,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:46,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 20:26:46,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:46,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 20:26:46,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:46,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:46,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:47,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:47,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 20:26:47,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:47,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-09-24 20:26:47,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:47,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:26:47,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:47,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 20:26:47,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:47,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:47,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:47,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:47,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 20:26:47,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:47,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-09-24 20:26:47,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:47,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:26:47,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:47,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 20:26:47,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:47,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:47,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:47,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:47,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 20:26:47,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:47,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-24 20:26:47,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:47,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:26:47,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:47,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 20:26:47,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:47,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:47,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:47,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:47,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 20:26:47,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:47,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-24 20:26:47,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:47,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:26:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 20:26:47,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:47,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:48,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:48,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:48,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:26:48,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:48,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-24 20:26:48,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:48,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:26:48,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:48,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 20:26:48,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:48,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:48,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:48,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:48,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 20:26:48,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:48,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 20:26:48,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:48,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:48,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:48,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 20:26:48,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:48,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:48,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:48,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:48,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 20:26:48,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:48,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 20:26:48,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:48,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:48,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:48,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 20:26:48,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:48,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:48,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:48,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:48,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:26:48,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:48,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 20:26:48,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:48,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:48,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:48,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:26:48,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:48,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:48,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:48,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:48,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:48,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:48,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:26:48,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:48,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:48,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:48,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:48,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:48,502 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-24 20:26:48,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328196235] [2020-09-24 20:26:48,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:48,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 20:26:48,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380562088] [2020-09-24 20:26:48,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 20:26:48,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:48,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 20:26:48,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-09-24 20:26:48,505 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 25 states. [2020-09-24 20:26:48,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:48,739 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-24 20:26:48,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-24 20:26:48,739 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 96 [2020-09-24 20:26:48,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:48,741 INFO L225 Difference]: With dead ends: 79 [2020-09-24 20:26:48,741 INFO L226 Difference]: Without dead ends: 73 [2020-09-24 20:26:48,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 20:26:48,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-24 20:26:48,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-09-24 20:26:48,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-24 20:26:48,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2020-09-24 20:26:48,750 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 96 [2020-09-24 20:26:48,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:48,750 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2020-09-24 20:26:48,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 20:26:48,751 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2020-09-24 20:26:48,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-24 20:26:48,751 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:48,752 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:48,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 20:26:48,752 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:48,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:48,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1180214055, now seen corresponding path program 11 times [2020-09-24 20:26:48,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:48,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653038130] [2020-09-24 20:26:48,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:48,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:48,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:53,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:53,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-24 20:26:53,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:53,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 20:26:53,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 20:26:53,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:26:53,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 20:26:53,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:53,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:53,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:53,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:53,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:53,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:53,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:26:53,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:53,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:53,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:53,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:53,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:53,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:53,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:54,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:54,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 20:26:54,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:54,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 616 [2020-09-24 20:26:54,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:54,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 20:26:54,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:26:54,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 20:26:54,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:54,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:54,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:55,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:55,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 20:26:55,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:55,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 546 [2020-09-24 20:26:55,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:55,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 20:26:55,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:55,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 20:26:55,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:55,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:55,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:55,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:55,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 20:26:55,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:55,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-09-24 20:26:55,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:55,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 20:26:55,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:55,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-24 20:26:55,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:55,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:55,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:56,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:56,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 20:26:56,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:56,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-09-24 20:26:56,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:56,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 20:26:56,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:56,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 20:26:56,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:56,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:56,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:56,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:56,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 20:26:56,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:56,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-09-24 20:26:56,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:56,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:26:56,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:56,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 20:26:56,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:56,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:56,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:56,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:56,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 20:26:56,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:56,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-09-24 20:26:56,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:56,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:26:56,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:56,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 20:26:56,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:56,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:56,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:56,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:56,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 20:26:56,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:56,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-24 20:26:56,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:56,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:26:56,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:56,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 20:26:56,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:56,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:56,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:57,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:57,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:26:57,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:57,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-24 20:26:57,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:57,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:26:57,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:57,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 20:26:57,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:57,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:57,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:57,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:57,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 20:26:57,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:57,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-24 20:26:57,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:57,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:26:57,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:57,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 20:26:57,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:57,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:57,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:57,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:57,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 20:26:57,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:57,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-24 20:26:57,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:57,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:57,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:57,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:26:57,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:57,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:57,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:57,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:57,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:26:57,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:57,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 20:26:57,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:57,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:26:57,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:26:57,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:57,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:57,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:57,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:57,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:57,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:26:57,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:57,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:57,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:57,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:26:57,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:26:57,609 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 17 proven. 341 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-24 20:26:57,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653038130] [2020-09-24 20:26:57,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:57,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 20:26:57,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290707462] [2020-09-24 20:26:57,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 20:26:57,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:57,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 20:26:57,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2020-09-24 20:26:57,613 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 18 states. [2020-09-24 20:26:57,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:57,805 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2020-09-24 20:26:57,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 20:26:57,806 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 104 [2020-09-24 20:26:57,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:57,807 INFO L225 Difference]: With dead ends: 84 [2020-09-24 20:26:57,807 INFO L226 Difference]: Without dead ends: 78 [2020-09-24 20:26:57,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=308, Invalid=562, Unknown=0, NotChecked=0, Total=870 [2020-09-24 20:26:57,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-24 20:26:57,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-24 20:26:57,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 20:26:57,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-09-24 20:26:57,823 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 104 [2020-09-24 20:26:57,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:57,823 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-09-24 20:26:57,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 20:26:57,823 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-09-24 20:26:57,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-24 20:26:57,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:57,825 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:57,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 20:26:57,825 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:57,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:57,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1287598415, now seen corresponding path program 12 times [2020-09-24 20:26:57,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:57,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151963425] [2020-09-24 20:26:57,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:57,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:58,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:02,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:02,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-24 20:27:02,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:27:02,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:27:02,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:02,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 20:27:02,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 20:27:02,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 20:27:02,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:02,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:27:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:02,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:02,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:02,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:27:02,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:02,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:27:02,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:02,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:27:02,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:02,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:27:02,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:02,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:27:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:02,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking...