/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=SMALLEST --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_o10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:14:44,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:14:44,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:14:44,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:14:44,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:14:44,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:14:44,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:14:44,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:14:44,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:14:44,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:14:44,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:14:44,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:14:44,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:14:44,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:14:44,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:14:44,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:14:44,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:14:44,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:14:44,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:14:44,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:14:44,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:14:44,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:14:44,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:14:44,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:14:44,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:14:44,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:14:44,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:14:44,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:14:44,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:14:44,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:14:44,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:14:44,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:14:44,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:14:44,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:14:44,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:14:44,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:14:44,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:14:44,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:14:44,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:14:44,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:14:44,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:14:44,737 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 18:14:44,789 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:14:44,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:14:44,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:14:44,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:14:44,794 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:14:44,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:14:44,795 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:14:44,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:14:44,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:14:44,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:14:44,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:14:44,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:14:44,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:14:44,799 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:14:44,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:14:44,799 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:14:44,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:14:44,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:14:44,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:14:44,800 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:14:44,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:14:44,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:14:44,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:14:44,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:14:44,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:14:44,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:14:44,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:14:44,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:14:44,803 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:14:44,803 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:14:45,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:14:45,258 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:14:45,262 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:14:45,264 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:14:45,264 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:14:45,265 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o10.c [2020-09-24 18:14:45,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebafe2887/3b5cdebccaec466daac8097da180315a/FLAG7121e8d6e [2020-09-24 18:14:45,818 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:14:45,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_o10.c [2020-09-24 18:14:45,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebafe2887/3b5cdebccaec466daac8097da180315a/FLAG7121e8d6e [2020-09-24 18:14:46,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebafe2887/3b5cdebccaec466daac8097da180315a [2020-09-24 18:14:46,181 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:14:46,186 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:14:46,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:14:46,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:14:46,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:14:46,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:14:46" (1/1) ... [2020-09-24 18:14:46,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70996f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:46, skipping insertion in model container [2020-09-24 18:14:46,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:14:46" (1/1) ... [2020-09-24 18:14:46,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:14:46,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:14:46,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:14:46,547 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:14:46,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:14:46,577 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:14:46,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:46 WrapperNode [2020-09-24 18:14:46,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:14:46,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:14:46,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:14:46,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:14:46,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:46" (1/1) ... [2020-09-24 18:14:46,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:46" (1/1) ... [2020-09-24 18:14:46,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:46" (1/1) ... [2020-09-24 18:14:46,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:46" (1/1) ... [2020-09-24 18:14:46,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:46" (1/1) ... [2020-09-24 18:14:46,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:46" (1/1) ... [2020-09-24 18:14:46,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:46" (1/1) ... [2020-09-24 18:14:46,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:14:46,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:14:46,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:14:46,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:14:46,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:46" (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 18:14:46,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:14:46,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:14:46,760 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 18:14:46,760 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:14:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 18:14:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:14:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 18:14:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:14:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:14:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:14:46,936 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:14:46,937 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 18:14:46,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:14:46 BoogieIcfgContainer [2020-09-24 18:14:46,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:14:46,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:14:46,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:14:46,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:14:46,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:14:46" (1/3) ... [2020-09-24 18:14:46,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523253d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:14:46, skipping insertion in model container [2020-09-24 18:14:46,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:46" (2/3) ... [2020-09-24 18:14:46,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523253d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:14:46, skipping insertion in model container [2020-09-24 18:14:46,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:14:46" (3/3) ... [2020-09-24 18:14:46,951 INFO L109 eAbstractionObserver]: Analyzing ICFG id_o10.c [2020-09-24 18:14:46,960 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:14:46,970 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:14:46,990 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:14:47,018 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:14:47,018 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:14:47,018 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:14:47,018 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:14:47,019 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:14:47,019 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:14:47,019 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:14:47,019 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:14:47,040 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-24 18:14:47,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 18:14:47,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:47,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:47,049 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:47,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:47,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1651991454, now seen corresponding path program 1 times [2020-09-24 18:14:47,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:47,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243283498] [2020-09-24 18:14:47,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:47,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:47,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:47,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:14:47,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:47,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 18:14:47,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:47,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:14:47,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:14:47,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:14:47,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:14:47,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:47,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:47,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:47,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:47,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:47,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:47,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:47,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:47,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:47,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:47,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:47,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:14:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:47,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:47,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:47,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:47,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:47,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:14:47,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:47,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:14:47,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:47,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:14:47,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:47,456 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 18:14:47,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243283498] [2020-09-24 18:14:47,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:14:47,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:14:47,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327131136] [2020-09-24 18:14:47,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:14:47,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:47,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:14:47,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:14:47,501 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-24 18:14:47,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:47,577 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-24 18:14:47,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:14:47,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 18:14:47,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:47,592 INFO L225 Difference]: With dead ends: 37 [2020-09-24 18:14:47,593 INFO L226 Difference]: Without dead ends: 22 [2020-09-24 18:14:47,597 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 18:14:47,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-24 18:14:47,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-24 18:14:47,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-24 18:14:47,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-24 18:14:47,658 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2020-09-24 18:14:47,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:47,659 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-24 18:14:47,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:14:47,659 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-24 18:14:47,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 18:14:47,662 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:47,662 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:47,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:14:47,663 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:47,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:47,663 INFO L82 PathProgramCache]: Analyzing trace with hash 189324707, now seen corresponding path program 1 times [2020-09-24 18:14:47,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:47,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886826311] [2020-09-24 18:14:47,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:47,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:47,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:47,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:14:47,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:47,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-09-24 18:14:47,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:47,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:14:47,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 18:14:47,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:14:47,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:48,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:48,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:48,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:48,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:48,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:48,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:14:48,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:48,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:48,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:48,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:48,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:48,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:14:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:48,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:48,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:48,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:14:48,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:48,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 18:14:48,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:48,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:14:48,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:48,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:14:48,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:48,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:48,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:48,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:48,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:48,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:48,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 18:14:48,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:14:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:48,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:14:48,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:48,254 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 18:14:48,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886826311] [2020-09-24 18:14:48,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:48,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:14:48,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749449591] [2020-09-24 18:14:48,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:14:48,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:48,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:14:48,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:14:48,265 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2020-09-24 18:14:48,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:48,339 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-24 18:14:48,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 18:14:48,340 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-24 18:14:48,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:48,341 INFO L225 Difference]: With dead ends: 31 [2020-09-24 18:14:48,342 INFO L226 Difference]: Without dead ends: 26 [2020-09-24 18:14:48,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:14:48,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-24 18:14:48,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-24 18:14:48,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-24 18:14:48,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-24 18:14:48,351 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2020-09-24 18:14:48,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:48,352 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-24 18:14:48,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:14:48,352 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-24 18:14:48,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 18:14:48,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:48,354 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:48,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:14:48,354 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:48,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:48,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1416732684, now seen corresponding path program 2 times [2020-09-24 18:14:48,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:48,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546710561] [2020-09-24 18:14:48,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:48,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:48,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:48,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 18:14:48,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:48,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-24 18:14:48,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:48,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:14:48,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 18:14:48,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:14:48,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:48,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:48,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:48,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:48,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:48,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:48,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:14:48,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:48,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:48,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:14:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:48,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:48,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:48,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:14:48,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:48,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 18:14:48,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:48,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:14:48,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:48,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:14:48,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:48,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:48,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:48,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:48,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:14:48,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:48,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 18:14:48,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:14:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:14:48,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:48,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:48,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:48,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:48,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:48,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:48,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:14:48,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:14:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:14:48,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:48,981 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 18:14:48,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546710561] [2020-09-24 18:14:48,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:48,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 18:14:48,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199984746] [2020-09-24 18:14:48,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 18:14:48,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:48,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 18:14:48,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:14:48,984 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-09-24 18:14:49,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:49,078 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-09-24 18:14:49,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:14:49,079 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-24 18:14:49,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:49,080 INFO L225 Difference]: With dead ends: 35 [2020-09-24 18:14:49,080 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 18:14:49,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:14:49,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 18:14:49,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 18:14:49,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 18:14:49,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-24 18:14:49,088 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 30 [2020-09-24 18:14:49,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:49,088 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-24 18:14:49,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 18:14:49,089 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-24 18:14:49,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 18:14:49,090 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:49,090 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:49,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:14:49,091 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:49,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:49,091 INFO L82 PathProgramCache]: Analyzing trace with hash -209476043, now seen corresponding path program 3 times [2020-09-24 18:14:49,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:49,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337044942] [2020-09-24 18:14:49,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:49,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:49,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:49,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 18:14:49,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:49,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-09-24 18:14:49,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:49,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 18:14:49,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 18:14:49,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:14:49,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 18:14:49,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:49,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:49,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:49,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:49,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:49,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:14:49,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:49,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:49,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:49,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:49,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:49,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:14:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:49,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:49,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:49,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:14:49,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:49,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-09-24 18:14:49,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:49,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:14:49,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:49,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:14:49,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:49,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:49,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:49,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:49,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:14:49,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:49,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 18:14:49,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:49,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:14:49,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:49,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:14:49,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:49,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:49,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:49,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:49,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:14:49,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:49,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 18:14:49,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:49,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:14:49,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:49,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:14:49,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:49,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:49,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:49,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:49,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:49,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:49,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:14:49,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:49,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:14:49,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:49,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:14:49,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:50,003 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 18:14:50,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337044942] [2020-09-24 18:14:50,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:50,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 18:14:50,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266390990] [2020-09-24 18:14:50,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 18:14:50,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:50,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 18:14:50,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:14:50,007 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-09-24 18:14:50,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:50,150 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-24 18:14:50,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 18:14:50,150 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-09-24 18:14:50,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:50,152 INFO L225 Difference]: With dead ends: 39 [2020-09-24 18:14:50,152 INFO L226 Difference]: Without dead ends: 34 [2020-09-24 18:14:50,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:14:50,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-24 18:14:50,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-24 18:14:50,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 18:14:50,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-24 18:14:50,160 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 37 [2020-09-24 18:14:50,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:50,161 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-24 18:14:50,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 18:14:50,161 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-24 18:14:50,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 18:14:50,163 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:50,163 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:50,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:14:50,164 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:50,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:50,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1007399302, now seen corresponding path program 4 times [2020-09-24 18:14:50,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:50,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377024465] [2020-09-24 18:14:50,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:50,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:50,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:50,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 18:14:50,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:50,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-24 18:14:50,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:50,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:14:50,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 18:14:50,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:14:50,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:50,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:50,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:50,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:50,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:50,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:50,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:14:50,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:50,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:50,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:50,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:50,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:50,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:14:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:50,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:50,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:50,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:14:50,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:50,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-24 18:14:50,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:50,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:14:50,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:50,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:14:50,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:50,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:50,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:50,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:50,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:14:50,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:50,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-24 18:14:50,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:50,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:14:50,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:50,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:14:50,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:50,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:50,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:51,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:51,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:14:51,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:51,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 18:14:51,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:51,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:14:51,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:51,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:14:51,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:51,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:51,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:51,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:51,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:14:51,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:51,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 18:14:51,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:51,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:14:51,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:51,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:14:51,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:51,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:51,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:51,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:51,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:51,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:51,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:14:51,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:51,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:14:51,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:51,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:14:51,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:51,252 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-24 18:14:51,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377024465] [2020-09-24 18:14:51,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:51,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 18:14:51,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620984760] [2020-09-24 18:14:51,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 18:14:51,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:51,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 18:14:51,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-24 18:14:51,254 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-09-24 18:14:51,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:51,471 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-24 18:14:51,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 18:14:51,472 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-24 18:14:51,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:51,473 INFO L225 Difference]: With dead ends: 43 [2020-09-24 18:14:51,474 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 18:14:51,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-09-24 18:14:51,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 18:14:51,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-24 18:14:51,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 18:14:51,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-24 18:14:51,481 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 44 [2020-09-24 18:14:51,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:51,482 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-24 18:14:51,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 18:14:51,482 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-24 18:14:51,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 18:14:51,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:51,486 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:51,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:14:51,486 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:51,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:51,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1787659065, now seen corresponding path program 5 times [2020-09-24 18:14:51,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:51,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604546862] [2020-09-24 18:14:51,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:51,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:51,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:51,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 18:14:51,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:51,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-09-24 18:14:51,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:51,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 18:14:51,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 18:14:51,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 18:14:51,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:14:51,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:51,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:51,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:51,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:51,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:51,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:14:51,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:51,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:51,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:51,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:51,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:51,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:14:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:52,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:52,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:52,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 18:14:52,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:52,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-09-24 18:14:52,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:14:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:52,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:14:52,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:52,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:52,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:52,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:52,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:14:52,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:52,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-24 18:14:52,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:52,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:14:52,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:52,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:14:52,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:52,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:52,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:52,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:52,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:14:52,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:52,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-24 18:14:52,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:52,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:14:52,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:52,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:14:52,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:52,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:52,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:52,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:52,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:14:52,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:52,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 18:14:52,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:52,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:14:52,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:52,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:14:52,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:52,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:52,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:52,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:52,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:14:52,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:52,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 18:14:52,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:14:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:14:52,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:53,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:53,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:53,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:53,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:53,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:53,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:14:53,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:53,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:14:53,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:53,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:14:53,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:53,080 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-24 18:14:53,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604546862] [2020-09-24 18:14:53,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:53,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 18:14:53,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152351801] [2020-09-24 18:14:53,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 18:14:53,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:53,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 18:14:53,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:14:53,083 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 15 states. [2020-09-24 18:14:53,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:53,330 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-24 18:14:53,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 18:14:53,331 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-09-24 18:14:53,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:53,332 INFO L225 Difference]: With dead ends: 47 [2020-09-24 18:14:53,333 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 18:14:53,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-09-24 18:14:53,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 18:14:53,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 18:14:53,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 18:14:53,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-24 18:14:53,340 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 51 [2020-09-24 18:14:53,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:53,341 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-24 18:14:53,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 18:14:53,341 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-24 18:14:53,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 18:14:53,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:53,342 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:53,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:14:53,343 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:53,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:53,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1360883432, now seen corresponding path program 6 times [2020-09-24 18:14:53,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:53,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105232147] [2020-09-24 18:14:53,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:53,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:53,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:53,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 18:14:53,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:53,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 497 [2020-09-24 18:14:53,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:53,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 18:14:53,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 18:14:53,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:14:53,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:53,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:53,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:53,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:53,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:53,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:53,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:14:53,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:53,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:53,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:53,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:53,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:53,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:14:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:53,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:54,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:54,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:14:54,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:54,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-09-24 18:14:54,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:54,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 18:14:54,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:54,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 18:14:54,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:54,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:54,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:54,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:54,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 18:14:54,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:54,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-09-24 18:14:54,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:54,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:14:54,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:54,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:14:54,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:54,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:54,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:54,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:54,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:14:54,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:54,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-24 18:14:54,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:54,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:14:54,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:54,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:14:54,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:54,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:55,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:55,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:55,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:14:55,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:55,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-24 18:14:55,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:14:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:55,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:14:55,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:55,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:55,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:55,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:55,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:14:55,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:55,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 18:14:55,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:55,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:14:55,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:55,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:14:55,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:55,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:55,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:55,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:55,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:14:55,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:55,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 18:14:55,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:55,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:14:55,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:55,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:14:55,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:55,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:55,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:55,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:55,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:55,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:55,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:14:55,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:55,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:14:55,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:55,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:14:55,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:55,469 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-24 18:14:55,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105232147] [2020-09-24 18:14:55,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:55,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 18:14:55,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932745725] [2020-09-24 18:14:55,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 18:14:55,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:55,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 18:14:55,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-24 18:14:55,472 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 17 states. [2020-09-24 18:14:55,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:55,786 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-24 18:14:55,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 18:14:55,787 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-24 18:14:55,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:55,788 INFO L225 Difference]: With dead ends: 51 [2020-09-24 18:14:55,788 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 18:14:55,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-09-24 18:14:55,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 18:14:55,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-24 18:14:55,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 18:14:55,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-09-24 18:14:55,796 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 58 [2020-09-24 18:14:55,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:55,797 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-09-24 18:14:55,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 18:14:55,797 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-09-24 18:14:55,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 18:14:55,798 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:55,798 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:55,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:14:55,799 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:55,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:55,799 INFO L82 PathProgramCache]: Analyzing trace with hash -807968423, now seen corresponding path program 7 times [2020-09-24 18:14:55,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:55,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345197470] [2020-09-24 18:14:55,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:55,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:56,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:56,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 18:14:56,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:56,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 600 [2020-09-24 18:14:56,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:56,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 18:14:56,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 18:14:56,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 18:14:56,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:56,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:56,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:56,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:56,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:56,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:56,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:14:56,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:56,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:56,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:56,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:56,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:56,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:14:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:56,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:57,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:57,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 18:14:57,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:57,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 527 [2020-09-24 18:14:57,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:57,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:14:57,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:57,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:14:57,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:57,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:57,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:57,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:57,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:14:57,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:57,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-09-24 18:14:57,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:57,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 18:14:57,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:57,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 18:14:57,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:57,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:57,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:57,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:57,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 18:14:57,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:57,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-09-24 18:14:57,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:57,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:14:57,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:57,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:14:57,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:57,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:57,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:57,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:57,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:14:57,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:57,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-24 18:14:57,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:57,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:14:57,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:57,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:14:57,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:58,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:58,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:58,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:58,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:14:58,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:58,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 18:14:58,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:58,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:14:58,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:58,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:14:58,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:58,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:58,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:58,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:58,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:14:58,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:58,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-24 18:14:58,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:58,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:14:58,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:58,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:14:58,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:58,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:58,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:58,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:58,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:14:58,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:58,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 18:14:58,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:14:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:14:58,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:58,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:58,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:58,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:58,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:58,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:58,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:14:58,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:58,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:14:58,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:58,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:14:58,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:58,497 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-24 18:14:58,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345197470] [2020-09-24 18:14:58,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:58,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 18:14:58,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400976042] [2020-09-24 18:14:58,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 18:14:58,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:58,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 18:14:58,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-24 18:14:58,500 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 19 states. [2020-09-24 18:14:58,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:58,848 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-24 18:14:58,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 18:14:58,848 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-24 18:14:58,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:58,850 INFO L225 Difference]: With dead ends: 55 [2020-09-24 18:14:58,853 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 18:14:58,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2020-09-24 18:14:58,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 18:14:58,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-24 18:14:58,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 18:14:58,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-24 18:14:58,863 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 65 [2020-09-24 18:14:58,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:58,863 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-24 18:14:58,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 18:14:58,864 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-24 18:14:58,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 18:14:58,866 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:58,866 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:58,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 18:14:58,867 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:58,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:58,867 INFO L82 PathProgramCache]: Analyzing trace with hash -705364310, now seen corresponding path program 8 times [2020-09-24 18:14:58,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:58,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214908433] [2020-09-24 18:14:58,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:58,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:59,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:59,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-24 18:14:59,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:59,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 803 [2020-09-24 18:14:59,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:59,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 18:14:59,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-24 18:14:59,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 18:14:59,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:59,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:59,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:59,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:59,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:59,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:59,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:14:59,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:59,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:59,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:59,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:59,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:59,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:14:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:59,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:00,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:00,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 18:15:00,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:00,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 665 [2020-09-24 18:15:00,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:00,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 18:15:00,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:00,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 18:15:00,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:00,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:00,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:00,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:00,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 18:15:00,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:00,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-09-24 18:15:00,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:00,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:15:00,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:00,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:15:00,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:00,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:00,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:01,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:01,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:15:01,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:01,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-09-24 18:15:01,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:01,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 18:15:01,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:01,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 18:15:01,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:01,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:01,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:01,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:01,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 18:15:01,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:01,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-24 18:15:01,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:01,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:15:01,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:01,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:15:01,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:01,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:01,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:01,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:01,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:15:01,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:01,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-24 18:15:01,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:01,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:15:01,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:01,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:15:01,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:01,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:01,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:02,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:02,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:15:02,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:02,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 18:15:02,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:02,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:15:02,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:02,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:15:02,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:02,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:02,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:02,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:02,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:15:02,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:02,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-24 18:15:02,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:02,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:15:02,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:02,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:15:02,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:02,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:02,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:02,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:02,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:15:02,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:02,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 18:15:02,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:02,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:15:02,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:02,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:15:02,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:02,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:02,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:02,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:02,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:02,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:02,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:15:02,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:02,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:15:02,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:02,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:15:02,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:02,460 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-24 18:15:02,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214908433] [2020-09-24 18:15:02,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:15:02,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 18:15:02,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667115310] [2020-09-24 18:15:02,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 18:15:02,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:15:02,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 18:15:02,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-24 18:15:02,463 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-09-24 18:15:02,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:15:02,986 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-24 18:15:02,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 18:15:02,987 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-09-24 18:15:02,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:15:02,989 INFO L225 Difference]: With dead ends: 59 [2020-09-24 18:15:02,989 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 18:15:02,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2020-09-24 18:15:02,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 18:15:02,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 18:15:03,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 18:15:03,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-24 18:15:03,001 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 72 [2020-09-24 18:15:03,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:15:03,001 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-24 18:15:03,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 18:15:03,002 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-24 18:15:03,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 18:15:03,003 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:15:03,003 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:15:03,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 18:15:03,003 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:15:03,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:15:03,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1418439701, now seen corresponding path program 9 times [2020-09-24 18:15:03,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:15:03,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23067277] [2020-09-24 18:15:03,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:15:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:03,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:03,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:03,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-24 18:15:03,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:03,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 867 [2020-09-24 18:15:03,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:03,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 18:15:03,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-24 18:15:03,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:15:03,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:03,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:15:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:03,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:03,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:03,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:15:03,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:03,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:15:03,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:03,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:03,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:03,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:03,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:03,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:15:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:03,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:04,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:04,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 18:15:04,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:04,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 714 [2020-09-24 18:15:04,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:04,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 18:15:04,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:04,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 18:15:04,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:04,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:04,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:05,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:05,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 18:15:05,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:05,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 598 [2020-09-24 18:15:05,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:05,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 18:15:05,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:05,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 18:15:05,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:05,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:05,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:05,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:05,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 18:15:05,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:05,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-09-24 18:15:05,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:05,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:15:05,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:05,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:15:05,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:05,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:05,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:06,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:06,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:15:06,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:06,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-24 18:15:06,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:06,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 18:15:06,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:06,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 18:15:06,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:06,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:06,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:06,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:06,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 18:15:06,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:06,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-24 18:15:06,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:06,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:15:06,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:06,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:15:06,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:06,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:06,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:06,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:06,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:15:06,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:06,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-24 18:15:06,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:06,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:15:06,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:06,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:15:06,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:06,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:06,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:06,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:06,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:15:06,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:06,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-24 18:15:06,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:06,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:15:06,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:06,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:15:06,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:06,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:06,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:07,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:07,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:15:07,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:07,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 18:15:07,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:07,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:15:07,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:07,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:15:07,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:07,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:07,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:07,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:07,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:15:07,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:07,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:15:07,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:07,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:15:07,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:07,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:15:07,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:07,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:07,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:07,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:07,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:07,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:07,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:15:07,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:07,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:15:07,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:07,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:15:07,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:07,300 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-24 18:15:07,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23067277] [2020-09-24 18:15:07,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:15:07,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 18:15:07,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853465424] [2020-09-24 18:15:07,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 18:15:07,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:15:07,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 18:15:07,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-24 18:15:07,303 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 23 states. [2020-09-24 18:15:07,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:15:07,962 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-09-24 18:15:07,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-24 18:15:07,962 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-09-24 18:15:07,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:15:07,963 INFO L225 Difference]: With dead ends: 63 [2020-09-24 18:15:07,963 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 18:15:07,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 18:15:07,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 18:15:07,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-24 18:15:07,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 18:15:07,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-24 18:15:07,970 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 79 [2020-09-24 18:15:07,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:15:07,971 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-24 18:15:07,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 18:15:07,971 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-24 18:15:07,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 18:15:07,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:15:07,973 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:15:07,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 18:15:07,973 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:15:07,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:15:07,973 INFO L82 PathProgramCache]: Analyzing trace with hash -182126020, now seen corresponding path program 10 times [2020-09-24 18:15:07,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:15:07,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943103478] [2020-09-24 18:15:07,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:15:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 18:15:07,994 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 18:15:07,994 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 18:15:07,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 18:15:08,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:15:08 BoogieIcfgContainer [2020-09-24 18:15:08,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:15:08,023 INFO L168 Benchmark]: Toolchain (without parser) took 21839.23 ms. Allocated memory was 140.5 MB in the beginning and 449.8 MB in the end (delta: 309.3 MB). Free memory was 104.2 MB in the beginning and 384.3 MB in the end (delta: -280.1 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2020-09-24 18:15:08,024 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 18:15:08,024 INFO L168 Benchmark]: CACSL2BoogieTranslator took 391.76 ms. Allocated memory is still 140.5 MB. Free memory was 103.6 MB in the beginning and 94.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-09-24 18:15:08,025 INFO L168 Benchmark]: Boogie Preprocessor took 30.27 ms. Allocated memory is still 140.5 MB. Free memory was 94.4 MB in the beginning and 93.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-24 18:15:08,026 INFO L168 Benchmark]: RCFGBuilder took 332.18 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 93.1 MB in the beginning and 170.8 MB in the end (delta: -77.7 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-24 18:15:08,027 INFO L168 Benchmark]: TraceAbstraction took 21077.16 ms. Allocated memory was 202.4 MB in the beginning and 449.8 MB in the end (delta: 247.5 MB). Free memory was 170.2 MB in the beginning and 384.3 MB in the end (delta: -214.2 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2020-09-24 18:15:08,031 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 391.76 ms. Allocated memory is still 140.5 MB. Free memory was 103.6 MB in the beginning and 94.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.27 ms. Allocated memory is still 140.5 MB. Free memory was 94.4 MB in the beginning and 93.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 332.18 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 93.1 MB in the beginning and 170.8 MB in the end (delta: -77.7 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21077.16 ms. Allocated memory was 202.4 MB in the beginning and 449.8 MB in the end (delta: 247.5 MB). Free memory was 170.2 MB in the beginning and 384.3 MB in the end (delta: -214.2 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] unsigned int input = __VERIFIER_nondet_uint(); [L11] CALL, EXPR id(input) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND TRUE x==0 [L5] return 0; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L11] RET, EXPR id(input) [L11] unsigned int result = id(input); [L12] COND TRUE result == 10 [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 20.9s, OverallIterations: 11, TraceHistogramMax: 11, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 320 SDtfs, 57 SDslu, 3501 SDs, 0 SdLazy, 1432 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 325 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.6s InterpolantComputationTime, 561 NumberOfCodeBlocks, 561 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 465 ConstructedInterpolants, 0 QuantifiedInterpolants, 106195 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 450/1020 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...