/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/reducercommutativity/sep20-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:13:09,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:13:09,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:13:09,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:13:09,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:13:09,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:13:09,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:13:09,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:13:09,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:13:09,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:13:09,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:13:09,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:13:09,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:13:09,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:13:09,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:13:09,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:13:09,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:13:09,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:13:09,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:13:09,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:13:09,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:13:09,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:13:09,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:13:09,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:13:09,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:13:09,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:13:09,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:13:09,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:13:09,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:13:09,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:13:09,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:13:09,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:13:09,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:13:09,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:13:09,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:13:09,859 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:13:09,860 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:13:09,860 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:13:09,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:13:09,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:13:09,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:13:09,863 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 [2020-10-27 04:13:09,889 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:13:09,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:13:09,891 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:13:09,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:13:09,891 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:13:09,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:13:09,892 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:13:09,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:13:09,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:13:09,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:13:09,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:13:09,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:13:09,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:13:09,893 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:13:09,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:13:09,894 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:13:09,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:13:09,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:13:09,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:13:09,894 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:13:09,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:13:09,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:13:09,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:13:09,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:13:09,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:13:09,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:13:09,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:13:09,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:13:09,896 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:13:09,897 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:13:10,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:13:10,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:13:10,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:13:10,315 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:13:10,316 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:13:10,317 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep20-1.i [2020-10-27 04:13:10,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef3774581/dea796b4e4664a2d939bc63c0945cbe1/FLAG07c7c0f5b [2020-10-27 04:13:11,006 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:13:11,006 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sep20-1.i [2020-10-27 04:13:11,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef3774581/dea796b4e4664a2d939bc63c0945cbe1/FLAG07c7c0f5b [2020-10-27 04:13:11,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef3774581/dea796b4e4664a2d939bc63c0945cbe1 [2020-10-27 04:13:11,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:13:11,404 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:13:11,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:13:11,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:13:11,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:13:11,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:13:11" (1/1) ... [2020-10-27 04:13:11,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb69c1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:11, skipping insertion in model container [2020-10-27 04:13:11,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:13:11" (1/1) ... [2020-10-27 04:13:11,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:13:11,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:13:11,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:13:11,703 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:13:11,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:13:11,746 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:13:11,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:11 WrapperNode [2020-10-27 04:13:11,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:13:11,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:13:11,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:13:11,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:13:11,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:11" (1/1) ... [2020-10-27 04:13:11,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:11" (1/1) ... [2020-10-27 04:13:11,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:11" (1/1) ... [2020-10-27 04:13:11,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:11" (1/1) ... [2020-10-27 04:13:11,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:11" (1/1) ... [2020-10-27 04:13:11,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:11" (1/1) ... [2020-10-27 04:13:11,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:11" (1/1) ... [2020-10-27 04:13:11,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:13:11,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:13:11,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:13:11,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:13:11,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:11" (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 [2020-10-27 04:13:11,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:13:11,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:13:11,872 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:13:11,872 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2020-10-27 04:13:11,873 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:13:11,873 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:13:11,873 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:13:11,873 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 04:13:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 04:13:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:13:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:13:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 04:13:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2020-10-27 04:13:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:13:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:13:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:13:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:13:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:13:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:13:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:13:12,405 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:13:12,406 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 04:13:12,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:13:12 BoogieIcfgContainer [2020-10-27 04:13:12,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:13:12,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:13:12,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:13:12,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:13:12,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:13:11" (1/3) ... [2020-10-27 04:13:12,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db8b3a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:13:12, skipping insertion in model container [2020-10-27 04:13:12,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:11" (2/3) ... [2020-10-27 04:13:12,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db8b3a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:13:12, skipping insertion in model container [2020-10-27 04:13:12,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:13:12" (3/3) ... [2020-10-27 04:13:12,417 INFO L111 eAbstractionObserver]: Analyzing ICFG sep20-1.i [2020-10-27 04:13:12,429 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:13:12,434 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:13:12,446 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:13:12,474 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:13:12,474 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:13:12,475 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:13:12,475 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:13:12,475 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:13:12,475 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:13:12,475 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:13:12,475 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:13:12,498 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-27 04:13:12,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 04:13:12,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:12,507 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:13:12,508 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:12,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:12,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1788891338, now seen corresponding path program 1 times [2020-10-27 04:13:12,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:12,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976511674] [2020-10-27 04:13:12,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:12,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:12,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:12,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:12,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:13,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:13,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:14,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:14,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:13:14,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:13:14,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1431 [2020-10-27 04:13:14,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:14,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:14,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:13:14,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:14,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:13:14,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:14,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:14,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:14,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:14,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:14,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:13:14,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:14,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:14,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:14,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:14,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:14,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 04:13:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:14,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:14,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:14,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:14,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:13:14,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:14,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:13:14,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:13:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:14,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:14,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 04:13:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:14,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:14,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:14,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:14,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:13:14,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:14,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:13:14,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:14,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:14,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:13:14,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:14,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:14,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:13:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:14,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:14,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:14,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:14,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:13:14,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:14,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:13:14,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:14,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:14,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:13:14,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:14,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:13:14,235 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 04:13:14,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976511674] [2020-10-27 04:13:14,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:13:14,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 04:13:14,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582497956] [2020-10-27 04:13:14,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 04:13:14,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:14,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 04:13:14,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 04:13:14,274 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-27 04:13:14,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:14,400 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2020-10-27 04:13:14,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 04:13:14,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-27 04:13:14,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:14,412 INFO L225 Difference]: With dead ends: 62 [2020-10-27 04:13:14,412 INFO L226 Difference]: Without dead ends: 29 [2020-10-27 04:13:14,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 04:13:14,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-27 04:13:14,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-27 04:13:14,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 04:13:14,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-10-27 04:13:14,485 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 34 [2020-10-27 04:13:14,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:14,488 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-10-27 04:13:14,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 04:13:14,488 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-10-27 04:13:14,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 04:13:14,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:14,492 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:13:14,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:13:14,492 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:14,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:14,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1899018129, now seen corresponding path program 1 times [2020-10-27 04:13:14,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:14,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621316968] [2020-10-27 04:13:14,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:14,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:14,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:14,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:14,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:14,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:14,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:16,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:16,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:13:16,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:13:16,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1735 [2020-10-27 04:13:16,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:16,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:13:16,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:16,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:13:16,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:16,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:16,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:16,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:16,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:16,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:16,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:13:16,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:16,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:16,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:16,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:16,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:16,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 04:13:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:16,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:16,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:16,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:16,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:13:16,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:16,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:13:16,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:16,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:13:16,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:16,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:13:16,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:16,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 04:13:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:16,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:16,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:16,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:16,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:13:16,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:16,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:13:16,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:16,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:13:16,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:16,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:13:16,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:16,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:13:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:16,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:16,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:16,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:16,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:13:16,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:16,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:13:16,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:16,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:13:16,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:16,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:13:16,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:16,390 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 04:13:16,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621316968] [2020-10-27 04:13:16,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:13:16,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:13:16,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853493818] [2020-10-27 04:13:16,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:13:16,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:16,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:13:16,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:13:16,393 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 5 states. [2020-10-27 04:13:16,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:16,523 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2020-10-27 04:13:16,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:13:16,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-27 04:13:16,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:16,525 INFO L225 Difference]: With dead ends: 55 [2020-10-27 04:13:16,525 INFO L226 Difference]: Without dead ends: 34 [2020-10-27 04:13:16,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:13:16,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-27 04:13:16,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2020-10-27 04:13:16,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 04:13:16,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-27 04:13:16,536 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 34 [2020-10-27 04:13:16,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:16,536 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-27 04:13:16,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:13:16,537 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-27 04:13:16,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 04:13:16,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:16,538 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:13:16,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:13:16,539 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:16,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:16,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1088396992, now seen corresponding path program 1 times [2020-10-27 04:13:16,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:16,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389649995] [2020-10-27 04:13:16,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:16,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:16,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:16,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:16,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:16,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:17,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:21,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:21,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 04:13:21,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:13:21,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 04:13:21,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:21,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:13:21,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:21,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:13:21,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:21,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:21,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:21,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:21,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:21,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:21,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:13:21,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:21,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:21,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:21,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:21,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:21,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 04:13:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:21,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:21,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:21,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:21,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:13:21,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:21,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 04:13:21,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:21,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:13:21,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:21,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:13:21,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:21,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 04:13:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:21,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:21,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:21,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:21,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:13:21,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:21,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 04:13:21,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:21,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:13:21,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:21,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:13:21,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:21,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:13:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:21,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:21,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:21,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:21,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:13:21,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:21,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 04:13:21,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:21,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:13:21,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:21,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:13:21,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:21,767 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 04:13:21,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389649995] [2020-10-27 04:13:21,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:21,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 04:13:21,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067360240] [2020-10-27 04:13:21,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 04:13:21,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:21,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 04:13:21,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:13:21,769 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 7 states. [2020-10-27 04:13:21,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:21,961 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-10-27 04:13:21,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:13:21,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-10-27 04:13:21,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:21,963 INFO L225 Difference]: With dead ends: 61 [2020-10-27 04:13:21,963 INFO L226 Difference]: Without dead ends: 39 [2020-10-27 04:13:21,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:13:21,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-27 04:13:21,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-10-27 04:13:21,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-27 04:13:21,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-10-27 04:13:21,973 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 45 [2020-10-27 04:13:21,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:21,973 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-10-27 04:13:21,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 04:13:21,974 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-10-27 04:13:21,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 04:13:21,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:21,976 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:13:21,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:13:21,976 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:21,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:21,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1287598475, now seen corresponding path program 2 times [2020-10-27 04:13:21,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:21,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693365657] [2020-10-27 04:13:21,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:22,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:22,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:22,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:22,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:24,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:26,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:26,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 04:13:26,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:13:26,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:13:26,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:13:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:13:27,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:27,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:27,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:27,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:27,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:27,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:27,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:13:27,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:27,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:27,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:27,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:27,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:27,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 04:13:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:27,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:27,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:27,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:27,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:13:27,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:27,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 04:13:27,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:27,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:13:27,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:27,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:13:27,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:27,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 04:13:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:27,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:27,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:27,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:27,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:13:27,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:27,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 04:13:27,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:13:27,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:27,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:13:27,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:27,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:13:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:27,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:27,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:27,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:27,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:13:27,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:27,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 04:13:27,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:27,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:13:27,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:27,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:13:27,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:27,297 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-27 04:13:27,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693365657] [2020-10-27 04:13:27,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:27,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 04:13:27,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146405269] [2020-10-27 04:13:27,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:13:27,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:27,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:13:27,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:13:27,299 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 9 states. [2020-10-27 04:13:27,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:27,544 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2020-10-27 04:13:27,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 04:13:27,544 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-27 04:13:27,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:27,546 INFO L225 Difference]: With dead ends: 69 [2020-10-27 04:13:27,546 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 04:13:27,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:13:27,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 04:13:27,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-10-27 04:13:27,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-27 04:13:27,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-10-27 04:13:27,554 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 56 [2020-10-27 04:13:27,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:27,555 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-10-27 04:13:27,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:13:27,555 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-10-27 04:13:27,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 04:13:27,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:27,556 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:13:27,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:13:27,557 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:27,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:27,557 INFO L82 PathProgramCache]: Analyzing trace with hash 317614428, now seen corresponding path program 3 times [2020-10-27 04:13:27,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:27,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395732743] [2020-10-27 04:13:27,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:27,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:27,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:27,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:27,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:32,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:32,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:32,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 04:13:32,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:13:32,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:13:32,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:32,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:13:32,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:32,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:13:32,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:32,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:32,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:32,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:32,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:32,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:32,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:13:32,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:32,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:32,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:32,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:32,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:32,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 04:13:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:32,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:32,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:32,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:32,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 04:13:32,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:32,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 04:13:32,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:32,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:13:32,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:32,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:13:32,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:32,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:13:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:32,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:32,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:32,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:32,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 04:13:32,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:32,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 04:13:32,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:32,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:13:32,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:32,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:13:32,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:32,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:13:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:32,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:32,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:32,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:32,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 04:13:32,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:32,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 04:13:32,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:32,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:13:32,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:32,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:13:32,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:32,998 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 36 proven. 81 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-27 04:13:32,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395732743] [2020-10-27 04:13:32,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:32,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 04:13:33,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678794109] [2020-10-27 04:13:33,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:13:33,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:33,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:13:33,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:13:33,003 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 11 states. [2020-10-27 04:13:33,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:33,354 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2020-10-27 04:13:33,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 04:13:33,355 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-27 04:13:33,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:33,356 INFO L225 Difference]: With dead ends: 77 [2020-10-27 04:13:33,356 INFO L226 Difference]: Without dead ends: 49 [2020-10-27 04:13:33,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:13:33,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-27 04:13:33,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-10-27 04:13:33,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 04:13:33,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-10-27 04:13:33,377 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 67 [2020-10-27 04:13:33,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:33,379 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-10-27 04:13:33,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:13:33,379 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-10-27 04:13:33,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 04:13:33,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:33,383 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:13:33,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:13:33,384 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:33,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:33,384 INFO L82 PathProgramCache]: Analyzing trace with hash 58083673, now seen corresponding path program 4 times [2020-10-27 04:13:33,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:33,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629418854] [2020-10-27 04:13:33,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:33,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:33,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:33,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:33,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:38,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:38,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 04:13:38,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:13:38,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 04:13:38,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:38,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:13:38,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:38,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:13:38,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:38,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:38,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:38,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:38,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:38,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:38,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:13:38,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:38,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:38,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:38,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:38,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:38,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 04:13:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:38,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:38,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:38,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:38,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:13:38,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:38,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 04:13:38,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:38,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:13:38,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:38,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:13:38,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:13:38,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 04:13:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:38,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:38,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:38,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:38,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:13:38,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:38,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 04:13:38,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:38,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:13:38,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:38,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:13:38,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:38,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:13:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:38,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:38,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:38,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:38,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:13:38,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:38,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 04:13:38,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:13:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:38,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:13:38,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:38,987 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 66 proven. 148 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 04:13:38,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629418854] [2020-10-27 04:13:38,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:38,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 04:13:38,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234465468] [2020-10-27 04:13:38,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:13:38,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:38,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:13:38,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:13:38,991 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 13 states. [2020-10-27 04:13:39,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:39,387 INFO L93 Difference]: Finished difference Result 85 states and 107 transitions. [2020-10-27 04:13:39,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 04:13:39,388 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 78 [2020-10-27 04:13:39,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:39,389 INFO L225 Difference]: With dead ends: 85 [2020-10-27 04:13:39,389 INFO L226 Difference]: Without dead ends: 54 [2020-10-27 04:13:39,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:13:39,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-27 04:13:39,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-10-27 04:13:39,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-27 04:13:39,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2020-10-27 04:13:39,406 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 78 [2020-10-27 04:13:39,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:39,407 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2020-10-27 04:13:39,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:13:39,407 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2020-10-27 04:13:39,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 04:13:39,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:39,412 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:13:39,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:13:39,413 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:39,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:39,414 INFO L82 PathProgramCache]: Analyzing trace with hash -34804360, now seen corresponding path program 5 times [2020-10-27 04:13:39,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:39,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507568427] [2020-10-27 04:13:39,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:39,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:39,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:39,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:39,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:44,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:44,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 04:13:44,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:13:44,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 04:13:44,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:13:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:13:44,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:44,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:44,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:44,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:44,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:44,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:44,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:13:44,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:44,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:44,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:44,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:44,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:44,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 04:13:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:44,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:44,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:44,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:44,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:13:44,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:44,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-27 04:13:44,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:44,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:13:44,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:44,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 04:13:44,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:44,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:13:44,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:44,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:44,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:44,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:44,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:13:44,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:44,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 04:13:44,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:44,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:13:44,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:44,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 04:13:44,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:44,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:13:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:44,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:44,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:45,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:45,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:13:45,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:45,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-27 04:13:45,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:45,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:13:45,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:45,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 04:13:45,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:45,125 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 105 proven. 235 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-27 04:13:45,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507568427] [2020-10-27 04:13:45,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:45,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 04:13:45,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008797111] [2020-10-27 04:13:45,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:13:45,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:45,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:13:45,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:13:45,129 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand 15 states. [2020-10-27 04:13:45,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:45,526 INFO L93 Difference]: Finished difference Result 93 states and 117 transitions. [2020-10-27 04:13:45,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:13:45,527 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 89 [2020-10-27 04:13:45,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:45,529 INFO L225 Difference]: With dead ends: 93 [2020-10-27 04:13:45,530 INFO L226 Difference]: Without dead ends: 59 [2020-10-27 04:13:45,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:13:45,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-27 04:13:45,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2020-10-27 04:13:45,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 04:13:45,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2020-10-27 04:13:45,539 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 89 [2020-10-27 04:13:45,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:45,540 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2020-10-27 04:13:45,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:13:45,540 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2020-10-27 04:13:45,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 04:13:45,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:45,541 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:13:45,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:13:45,541 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:45,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:45,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1929013309, now seen corresponding path program 6 times [2020-10-27 04:13:45,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:45,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687303961] [2020-10-27 04:13:45,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:45,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:45,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:45,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:45,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:50,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:50,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 04:13:50,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:13:50,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 04:13:50,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:50,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:13:50,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:50,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:13:50,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:50,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:50,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:50,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:50,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:50,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:50,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:13:50,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:50,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:50,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:50,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:50,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:50,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 04:13:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:50,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:50,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:50,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:50,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:13:50,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:50,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-27 04:13:50,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:50,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:13:50,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:50,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:13:50,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:51,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 04:13:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:51,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:51,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:51,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:51,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:13:51,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:51,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-27 04:13:51,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:51,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:13:51,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:13:51,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:51,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:13:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:51,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:51,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:51,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:51,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:13:51,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:51,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-27 04:13:51,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:51,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:13:51,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:51,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:13:51,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:51,517 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 153 proven. 342 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 04:13:51,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687303961] [2020-10-27 04:13:51,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:51,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 04:13:51,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871975972] [2020-10-27 04:13:51,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 04:13:51,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:51,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 04:13:51,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-27 04:13:51,521 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 17 states. [2020-10-27 04:13:52,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:52,051 INFO L93 Difference]: Finished difference Result 101 states and 127 transitions. [2020-10-27 04:13:52,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 04:13:52,052 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 100 [2020-10-27 04:13:52,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:52,053 INFO L225 Difference]: With dead ends: 101 [2020-10-27 04:13:52,053 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 04:13:52,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2020-10-27 04:13:52,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 04:13:52,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2020-10-27 04:13:52,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-27 04:13:52,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2020-10-27 04:13:52,063 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 100 [2020-10-27 04:13:52,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:52,064 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2020-10-27 04:13:52,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 04:13:52,064 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2020-10-27 04:13:52,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 04:13:52,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:52,065 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:13:52,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:13:52,066 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:52,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:52,066 INFO L82 PathProgramCache]: Analyzing trace with hash 506637716, now seen corresponding path program 7 times [2020-10-27 04:13:52,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:52,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851554558] [2020-10-27 04:13:52,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:52,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:52,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:52,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:52,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:57,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:57,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 04:13:57,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:13:57,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 04:13:57,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:57,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:13:57,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:57,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:13:57,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:57,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:57,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:57,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:57,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:57,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:57,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:13:57,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:57,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:57,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 04:13:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:57,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:57,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:57,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:57,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 04:13:57,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:57,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-27 04:13:57,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:57,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:13:57,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:57,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:13:57,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:57,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 04:13:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:57,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:57,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:57,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:57,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 04:13:57,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:57,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-27 04:13:57,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:57,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:13:57,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:57,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:13:57,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:57,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:13:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:57,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:57,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:58,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:58,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 04:13:58,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:58,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-27 04:13:58,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:58,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:13:58,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:58,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:13:58,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:58,121 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 210 proven. 469 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-27 04:13:58,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851554558] [2020-10-27 04:13:58,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:13:58,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 04:13:58,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065320480] [2020-10-27 04:13:58,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 04:13:58,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:58,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 04:13:58,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:13:58,124 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand 19 states. [2020-10-27 04:13:58,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:58,803 INFO L93 Difference]: Finished difference Result 109 states and 137 transitions. [2020-10-27 04:13:58,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:13:58,803 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 111 [2020-10-27 04:13:58,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:58,805 INFO L225 Difference]: With dead ends: 109 [2020-10-27 04:13:58,805 INFO L226 Difference]: Without dead ends: 69 [2020-10-27 04:13:58,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2020-10-27 04:13:58,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-27 04:13:58,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2020-10-27 04:13:58,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 04:13:58,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2020-10-27 04:13:58,817 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 111 [2020-10-27 04:13:58,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:58,817 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2020-10-27 04:13:58,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 04:13:58,818 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2020-10-27 04:13:58,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 04:13:58,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:58,822 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:13:58,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:13:58,822 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:58,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:58,823 INFO L82 PathProgramCache]: Analyzing trace with hash 234253089, now seen corresponding path program 8 times [2020-10-27 04:13:58,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:58,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210306459] [2020-10-27 04:13:58,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:58,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:58,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:59,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:59,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:03,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:03,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 04:14:03,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:03,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 04:14:03,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:03,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:14:03,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:03,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:14:03,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:04,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:04,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:04,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:04,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:04,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:04,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:14:04,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:04,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:04,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:04,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:04,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:04,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:14:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:04,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:04,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:04,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:04,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:14:04,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:04,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-27 04:14:04,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:04,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:14:04,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:04,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:14:04,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:04,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:14:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:04,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:04,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:04,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:04,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:14:04,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:04,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-27 04:14:04,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:04,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:14:04,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:04,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:14:04,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:04,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 04:14:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:04,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:04,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:05,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:05,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:14:05,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:05,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-27 04:14:05,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:05,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:14:05,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:05,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:14:05,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:14:05,247 INFO L134 CoverageAnalysis]: Checked inductivity of 979 backedges. 276 proven. 616 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-27 04:14:05,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210306459] [2020-10-27 04:14:05,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:05,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 04:14:05,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865588933] [2020-10-27 04:14:05,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 04:14:05,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:05,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 04:14:05,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:14:05,252 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand 21 states. [2020-10-27 04:14:05,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:05,944 INFO L93 Difference]: Finished difference Result 117 states and 147 transitions. [2020-10-27 04:14:05,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 04:14:05,944 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 122 [2020-10-27 04:14:05,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:05,946 INFO L225 Difference]: With dead ends: 117 [2020-10-27 04:14:05,946 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 04:14:05,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2020-10-27 04:14:05,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 04:14:05,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2020-10-27 04:14:05,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-27 04:14:05,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 84 transitions. [2020-10-27 04:14:05,965 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 84 transitions. Word has length 122 [2020-10-27 04:14:05,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:05,968 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 84 transitions. [2020-10-27 04:14:05,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 04:14:05,969 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 84 transitions. [2020-10-27 04:14:05,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-27 04:14:05,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:05,973 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:05,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:14:05,973 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:05,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:05,975 INFO L82 PathProgramCache]: Analyzing trace with hash 349596080, now seen corresponding path program 9 times [2020-10-27 04:14:05,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:05,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863876339] [2020-10-27 04:14:05,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:06,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:06,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:06,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:06,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:11,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:11,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 04:14:11,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:11,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-27 04:14:11,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:11,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:14:11,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:11,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:14:11,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:11,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:11,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:11,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:11,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:11,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:11,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:14:11,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:11,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:11,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:11,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:11,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:14:11,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 04:14:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:11,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:11,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:11,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:11,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 04:14:11,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:11,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-27 04:14:11,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:11,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:14:11,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:11,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 04:14:11,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:11,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:14:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:11,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:12,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:12,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:12,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 04:14:12,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:12,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-27 04:14:12,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:12,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:14:12,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 04:14:12,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:12,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 04:14:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:12,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:12,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:12,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:12,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 04:14:12,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:12,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-27 04:14:12,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:12,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:14:12,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:12,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 04:14:12,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:12,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 351 proven. 783 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-27 04:14:12,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863876339] [2020-10-27 04:14:12,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:12,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 04:14:12,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402597391] [2020-10-27 04:14:12,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 04:14:12,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:12,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 04:14:12,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:14:12,461 INFO L87 Difference]: Start difference. First operand 71 states and 84 transitions. Second operand 23 states. [2020-10-27 04:14:13,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:13,312 INFO L93 Difference]: Finished difference Result 125 states and 157 transitions. [2020-10-27 04:14:13,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 04:14:13,313 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 133 [2020-10-27 04:14:13,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:13,314 INFO L225 Difference]: With dead ends: 125 [2020-10-27 04:14:13,314 INFO L226 Difference]: Without dead ends: 79 [2020-10-27 04:14:13,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 04:14:13,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-27 04:14:13,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-10-27 04:14:13,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 04:14:13,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 90 transitions. [2020-10-27 04:14:13,325 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 90 transitions. Word has length 133 [2020-10-27 04:14:13,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:13,326 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 90 transitions. [2020-10-27 04:14:13,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 04:14:13,326 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 90 transitions. [2020-10-27 04:14:13,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 04:14:13,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:13,328 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:13,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:14:13,328 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:13,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:13,329 INFO L82 PathProgramCache]: Analyzing trace with hash 529764869, now seen corresponding path program 10 times [2020-10-27 04:14:13,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:13,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690549119] [2020-10-27 04:14:13,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:13,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:13,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:13,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:13,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:18,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:18,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 04:14:18,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:18,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 04:14:18,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:18,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:14:18,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:18,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:14:18,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:18,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:18,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:18,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:18,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:18,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:18,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:14:18,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:18,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:18,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:18,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:18,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:18,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:14:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:18,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:18,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:18,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:18,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 04:14:18,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:18,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-27 04:14:18,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:18,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:14:18,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:18,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:14:18,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:19,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:14:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:19,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:19,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:19,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:19,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 04:14:19,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:19,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-27 04:14:19,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:19,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:14:19,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:19,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:14:19,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:19,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 04:14:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:19,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:19,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:19,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:19,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 04:14:19,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:19,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-27 04:14:19,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:19,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:14:19,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:19,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:14:19,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:19,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 435 proven. 970 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 04:14:19,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690549119] [2020-10-27 04:14:19,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:19,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 04:14:19,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794594476] [2020-10-27 04:14:19,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 04:14:19,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:19,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 04:14:19,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2020-10-27 04:14:19,927 INFO L87 Difference]: Start difference. First operand 76 states and 90 transitions. Second operand 25 states. [2020-10-27 04:14:20,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:20,855 INFO L93 Difference]: Finished difference Result 133 states and 167 transitions. [2020-10-27 04:14:20,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:14:20,855 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 144 [2020-10-27 04:14:20,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:20,857 INFO L225 Difference]: With dead ends: 133 [2020-10-27 04:14:20,857 INFO L226 Difference]: Without dead ends: 84 [2020-10-27 04:14:20,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 04:14:20,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-27 04:14:20,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2020-10-27 04:14:20,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-27 04:14:20,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2020-10-27 04:14:20,867 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 144 [2020-10-27 04:14:20,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:20,867 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2020-10-27 04:14:20,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 04:14:20,868 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2020-10-27 04:14:20,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-27 04:14:20,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:20,870 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:20,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:14:20,870 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:20,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:20,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1106174412, now seen corresponding path program 11 times [2020-10-27 04:14:20,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:20,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598990019] [2020-10-27 04:14:20,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:20,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:20,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:21,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:21,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:25,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:25,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 04:14:25,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:25,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:14:25,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:25,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:14:25,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:25,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 04:14:25,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:26,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:26,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:26,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:26,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:26,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:26,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:14:26,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:26,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:26,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:26,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:26,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:26,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:14:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:26,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:26,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:26,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:26,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 04:14:26,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:26,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-27 04:14:26,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:26,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:14:26,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:26,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 04:14:26,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:26,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 04:14:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:26,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:26,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:27,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:27,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 04:14:27,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:27,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-27 04:14:27,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:27,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:14:27,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:27,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 04:14:27,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:27,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 04:14:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:27,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:27,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:27,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:27,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 04:14:27,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:27,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-27 04:14:27,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:27,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:14:27,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:27,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 04:14:27,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:27,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1819 backedges. 528 proven. 1177 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-27 04:14:27,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598990019] [2020-10-27 04:14:27,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:27,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 04:14:27,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004205464] [2020-10-27 04:14:27,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 04:14:27,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:27,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 04:14:27,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2020-10-27 04:14:27,521 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand 27 states. [2020-10-27 04:14:28,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:28,457 INFO L93 Difference]: Finished difference Result 141 states and 177 transitions. [2020-10-27 04:14:28,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 04:14:28,457 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 155 [2020-10-27 04:14:28,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:28,459 INFO L225 Difference]: With dead ends: 141 [2020-10-27 04:14:28,459 INFO L226 Difference]: Without dead ends: 89 [2020-10-27 04:14:28,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=363, Invalid=1119, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 04:14:28,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-27 04:14:28,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2020-10-27 04:14:28,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-27 04:14:28,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2020-10-27 04:14:28,469 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 155 [2020-10-27 04:14:28,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:28,470 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2020-10-27 04:14:28,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 04:14:28,470 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2020-10-27 04:14:28,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 04:14:28,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:28,472 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:28,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:14:28,472 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:28,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:28,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1979391209, now seen corresponding path program 12 times [2020-10-27 04:14:28,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:28,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645336606] [2020-10-27 04:14:28,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:28,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:28,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:28,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:28,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:33,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:33,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 04:14:33,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:33,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-27 04:14:33,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:33,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:14:33,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:33,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:14:33,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:33,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:33,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:33,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:33,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:33,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:33,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:14:33,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:33,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:33,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:33,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:33,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:33,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:14:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:33,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:33,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:34,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:34,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:14:34,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:34,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-27 04:14:34,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:34,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:14:34,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:34,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:14:34,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:34,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:14:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:34,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:34,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:34,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:34,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:14:34,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:34,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-10-27 04:14:34,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:34,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:14:34,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:34,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:14:34,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:34,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 04:14:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:34,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:34,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:35,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:35,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:14:35,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:35,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-27 04:14:35,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:35,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:14:35,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:35,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:14:35,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:35,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2157 backedges. 630 proven. 1404 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-27 04:14:35,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645336606] [2020-10-27 04:14:35,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:35,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 04:14:35,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720026060] [2020-10-27 04:14:35,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 04:14:35,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:35,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 04:14:35,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=601, Unknown=0, NotChecked=0, Total=812 [2020-10-27 04:14:35,361 INFO L87 Difference]: Start difference. First operand 86 states and 102 transitions. Second operand 29 states. [2020-10-27 04:14:36,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:36,471 INFO L93 Difference]: Finished difference Result 149 states and 187 transitions. [2020-10-27 04:14:36,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 04:14:36,471 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 166 [2020-10-27 04:14:36,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:36,473 INFO L225 Difference]: With dead ends: 149 [2020-10-27 04:14:36,473 INFO L226 Difference]: Without dead ends: 94 [2020-10-27 04:14:36,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=419, Invalid=1303, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 04:14:36,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-27 04:14:36,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2020-10-27 04:14:36,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-27 04:14:36,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 108 transitions. [2020-10-27 04:14:36,494 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 108 transitions. Word has length 166 [2020-10-27 04:14:36,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:36,495 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 108 transitions. [2020-10-27 04:14:36,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 04:14:36,495 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 108 transitions. [2020-10-27 04:14:36,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-27 04:14:36,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:36,500 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:36,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:14:36,500 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:36,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:36,501 INFO L82 PathProgramCache]: Analyzing trace with hash -2137860632, now seen corresponding path program 13 times [2020-10-27 04:14:36,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:36,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874675916] [2020-10-27 04:14:36,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:36,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:36,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:36,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:36,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:41,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:41,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-27 04:14:41,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:41,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 04:14:41,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:41,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:14:41,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:41,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 04:14:41,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:41,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:41,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:41,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:41,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:41,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:41,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:14:41,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:41,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:41,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:41,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:41,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:41,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 04:14:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:41,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:41,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:42,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:42,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:14:42,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:42,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-10-27 04:14:42,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:42,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:14:42,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:42,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 04:14:42,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:42,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:14:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:42,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:42,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:43,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:43,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:14:43,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:43,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-27 04:14:43,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:43,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:14:43,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:43,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 04:14:43,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:43,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 04:14:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:43,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:43,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:43,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:43,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:14:43,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:43,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-27 04:14:43,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:43,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:14:43,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:43,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 04:14:43,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:43,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2524 backedges. 741 proven. 1651 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-27 04:14:43,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874675916] [2020-10-27 04:14:43,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:43,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 04:14:43,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534429904] [2020-10-27 04:14:43,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 04:14:43,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:43,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 04:14:43,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=689, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:14:43,641 INFO L87 Difference]: Start difference. First operand 91 states and 108 transitions. Second operand 31 states. [2020-10-27 04:14:44,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:44,790 INFO L93 Difference]: Finished difference Result 157 states and 197 transitions. [2020-10-27 04:14:44,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 04:14:44,791 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 177 [2020-10-27 04:14:44,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:44,792 INFO L225 Difference]: With dead ends: 157 [2020-10-27 04:14:44,792 INFO L226 Difference]: Without dead ends: 99 [2020-10-27 04:14:44,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=479, Invalid=1501, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 04:14:44,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-27 04:14:44,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2020-10-27 04:14:44,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-27 04:14:44,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 114 transitions. [2020-10-27 04:14:44,803 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 114 transitions. Word has length 177 [2020-10-27 04:14:44,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:44,803 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 114 transitions. [2020-10-27 04:14:44,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 04:14:44,803 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 114 transitions. [2020-10-27 04:14:44,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 04:14:44,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:44,806 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:44,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:14:44,806 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:44,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:44,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1504293939, now seen corresponding path program 14 times [2020-10-27 04:14:44,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:44,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950474480] [2020-10-27 04:14:44,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:44,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:44,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:44,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:45,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:49,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:49,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-27 04:14:49,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:49,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-27 04:14:49,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:49,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:14:49,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:49,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:14:49,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:50,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:50,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:50,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:50,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:50,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:50,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:14:50,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:50,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:50,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:50,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:50,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:50,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 04:14:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:50,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:50,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:50,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:50,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 04:14:50,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:50,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-10-27 04:14:50,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:14:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:14:50,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:51,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 04:14:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:51,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:51,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 04:14:51,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:51,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-10-27 04:14:51,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:51,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:14:51,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:51,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:14:51,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:51,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-27 04:14:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:51,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:52,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:52,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 04:14:52,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:52,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 545 [2020-10-27 04:14:52,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:52,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:14:52,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:52,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:14:52,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:52,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2920 backedges. 861 proven. 1918 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-27 04:14:52,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950474480] [2020-10-27 04:14:52,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:52,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-27 04:14:52,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804151332] [2020-10-27 04:14:52,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-27 04:14:52,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:52,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-27 04:14:52,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 04:14:52,271 INFO L87 Difference]: Start difference. First operand 96 states and 114 transitions. Second operand 33 states. [2020-10-27 04:14:53,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:53,521 INFO L93 Difference]: Finished difference Result 165 states and 207 transitions. [2020-10-27 04:14:53,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 04:14:53,522 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 188 [2020-10-27 04:14:53,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:53,524 INFO L225 Difference]: With dead ends: 165 [2020-10-27 04:14:53,524 INFO L226 Difference]: Without dead ends: 104 [2020-10-27 04:14:53,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=543, Invalid=1713, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 04:14:53,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-27 04:14:53,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2020-10-27 04:14:53,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-27 04:14:53,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 120 transitions. [2020-10-27 04:14:53,534 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 120 transitions. Word has length 188 [2020-10-27 04:14:53,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:53,534 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 120 transitions. [2020-10-27 04:14:53,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-27 04:14:53,534 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 120 transitions. [2020-10-27 04:14:53,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-27 04:14:53,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:53,537 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:53,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 04:14:53,537 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:53,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:53,538 INFO L82 PathProgramCache]: Analyzing trace with hash -489093628, now seen corresponding path program 15 times [2020-10-27 04:14:53,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:53,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674761226] [2020-10-27 04:14:53,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:53,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:53,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:53,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:53,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:58,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:58,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-27 04:14:58,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:58,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-27 04:14:58,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:58,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:14:58,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:58,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:14:58,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:58,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:58,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:58,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:58,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:58,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:58,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:14:58,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:58,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:58,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 04:14:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:58,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:58,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:59,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:59,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 04:14:59,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:59,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-10-27 04:14:59,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:59,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:14:59,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:59,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:14:59,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:59,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 04:15:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:00,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:00,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:00,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:00,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 04:15:00,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:00,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 806 [2020-10-27 04:15:00,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:00,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:15:00,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:00,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:15:00,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:00,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 04:15:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:00,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:00,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:01,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:01,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 04:15:01,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:01,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-10-27 04:15:01,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:01,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:15:01,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:01,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:15:01,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:01,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3345 backedges. 990 proven. 2205 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-27 04:15:01,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674761226] [2020-10-27 04:15:01,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:01,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-27 04:15:01,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180629921] [2020-10-27 04:15:01,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-27 04:15:01,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:01,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-27 04:15:01,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=883, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 04:15:01,471 INFO L87 Difference]: Start difference. First operand 101 states and 120 transitions. Second operand 35 states. [2020-10-27 04:15:02,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:02,831 INFO L93 Difference]: Finished difference Result 173 states and 217 transitions. [2020-10-27 04:15:02,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 04:15:02,831 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 199 [2020-10-27 04:15:02,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:02,833 INFO L225 Difference]: With dead ends: 173 [2020-10-27 04:15:02,833 INFO L226 Difference]: Without dead ends: 109 [2020-10-27 04:15:02,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=611, Invalid=1939, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 04:15:02,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-27 04:15:02,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2020-10-27 04:15:02,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-27 04:15:02,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 126 transitions. [2020-10-27 04:15:02,844 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 126 transitions. Word has length 199 [2020-10-27 04:15:02,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:02,844 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 126 transitions. [2020-10-27 04:15:02,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-27 04:15:02,844 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 126 transitions. [2020-10-27 04:15:02,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-27 04:15:02,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:02,846 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 16, 16, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:02,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 04:15:02,846 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:02,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:02,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1355701937, now seen corresponding path program 16 times [2020-10-27 04:15:02,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:02,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151576043] [2020-10-27 04:15:02,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:02,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:02,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:03,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:03,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:07,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:07,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 04:15:07,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:07,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 04:15:07,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:07,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:15:07,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:07,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:15:07,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:08,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:08,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:08,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:08,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:08,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:08,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:08,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:08,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:08,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:08,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:08,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:08,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:15:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:08,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:08,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:09,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:09,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:15:09,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:09,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 937 [2020-10-27 04:15:09,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:15:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:15:09,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:09,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:15:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:09,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:09,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:10,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:10,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:15:10,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:10,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 704 [2020-10-27 04:15:10,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:10,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:15:10,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:10,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:15:10,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:10,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-27 04:15:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:10,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:10,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:11,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:11,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:15:11,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:11,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 700 [2020-10-27 04:15:11,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:11,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:15:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:15:11,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:11,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3799 backedges. 1128 proven. 2512 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-27 04:15:11,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151576043] [2020-10-27 04:15:11,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:11,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-27 04:15:11,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036452592] [2020-10-27 04:15:11,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-27 04:15:11,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:11,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-27 04:15:11,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=989, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 04:15:11,146 INFO L87 Difference]: Start difference. First operand 106 states and 126 transitions. Second operand 37 states. [2020-10-27 04:15:12,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:12,526 INFO L93 Difference]: Finished difference Result 181 states and 227 transitions. [2020-10-27 04:15:12,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 04:15:12,527 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 210 [2020-10-27 04:15:12,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:12,529 INFO L225 Difference]: With dead ends: 181 [2020-10-27 04:15:12,529 INFO L226 Difference]: Without dead ends: 114 [2020-10-27 04:15:12,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=683, Invalid=2179, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 04:15:12,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-27 04:15:12,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2020-10-27 04:15:12,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-27 04:15:12,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 132 transitions. [2020-10-27 04:15:12,539 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 132 transitions. Word has length 210 [2020-10-27 04:15:12,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:12,539 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 132 transitions. [2020-10-27 04:15:12,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-27 04:15:12,539 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 132 transitions. [2020-10-27 04:15:12,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-27 04:15:12,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:12,541 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 17, 17, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:12,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 04:15:12,541 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:12,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:12,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1842885152, now seen corresponding path program 17 times [2020-10-27 04:15:12,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:12,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773082179] [2020-10-27 04:15:12,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:12,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:12,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:12,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:12,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:17,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:17,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-27 04:15:17,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:17,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-27 04:15:17,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:15:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:15:17,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:17,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:17,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:17,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:17,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:17,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:17,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:17,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:17,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:17,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:17,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:17,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:17,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 04:15:17,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:17,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:18,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:18,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:18,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 04:15:18,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:18,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-10-27 04:15:18,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:18,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:15:18,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:18,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 04:15:18,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:19,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 04:15:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:19,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:19,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:19,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:19,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 04:15:19,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:19,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-10-27 04:15:19,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:19,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:15:19,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:19,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 04:15:19,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:19,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-27 04:15:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:19,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:19,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:20,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:20,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 04:15:20,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:20,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-10-27 04:15:20,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:20,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:15:20,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:20,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 04:15:20,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:20,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4282 backedges. 1275 proven. 2839 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-27 04:15:20,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773082179] [2020-10-27 04:15:20,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:20,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-27 04:15:20,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354486562] [2020-10-27 04:15:20,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-27 04:15:20,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:20,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-27 04:15:20,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1101, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 04:15:20,542 INFO L87 Difference]: Start difference. First operand 111 states and 132 transitions. Second operand 39 states. [2020-10-27 04:15:22,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:22,042 INFO L93 Difference]: Finished difference Result 189 states and 237 transitions. [2020-10-27 04:15:22,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-27 04:15:22,043 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 221 [2020-10-27 04:15:22,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:22,044 INFO L225 Difference]: With dead ends: 189 [2020-10-27 04:15:22,044 INFO L226 Difference]: Without dead ends: 119 [2020-10-27 04:15:22,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=759, Invalid=2433, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 04:15:22,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-27 04:15:22,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 116. [2020-10-27 04:15:22,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 04:15:22,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 138 transitions. [2020-10-27 04:15:22,054 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 138 transitions. Word has length 221 [2020-10-27 04:15:22,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:22,055 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 138 transitions. [2020-10-27 04:15:22,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-27 04:15:22,055 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 138 transitions. [2020-10-27 04:15:22,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-27 04:15:22,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:22,057 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:22,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 04:15:22,057 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:22,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:22,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1686934933, now seen corresponding path program 18 times [2020-10-27 04:15:22,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:22,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364105668] [2020-10-27 04:15:22,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:22,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:22,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:22,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:22,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:27,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:27,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-27 04:15:27,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:27,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 04:15:27,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:27,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:15:27,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:27,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:15:27,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:27,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:27,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:27,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:27,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:27,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:27,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:27,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:27,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:27,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:27,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:27,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:27,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:15:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:27,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:27,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:28,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:28,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:15:28,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:28,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-10-27 04:15:28,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:28,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:15:28,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:28,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:15:28,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:28,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-27 04:15:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:28,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:28,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:29,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:29,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:15:29,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:29,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 658 [2020-10-27 04:15:29,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:29,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:15:29,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:29,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:15:29,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:29,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-27 04:15:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:29,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:29,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:30,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:30,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:15:30,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:30,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 664 [2020-10-27 04:15:30,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:30,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:15:30,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:30,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:15:30,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:30,125 INFO L134 CoverageAnalysis]: Checked inductivity of 4794 backedges. 1431 proven. 3186 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-27 04:15:30,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364105668] [2020-10-27 04:15:30,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:30,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-27 04:15:30,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912809187] [2020-10-27 04:15:30,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-27 04:15:30,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:30,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-27 04:15:30,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=1219, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 04:15:30,128 INFO L87 Difference]: Start difference. First operand 116 states and 138 transitions. Second operand 41 states. [2020-10-27 04:15:31,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:31,861 INFO L93 Difference]: Finished difference Result 197 states and 247 transitions. [2020-10-27 04:15:31,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-27 04:15:31,862 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 232 [2020-10-27 04:15:31,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:31,863 INFO L225 Difference]: With dead ends: 197 [2020-10-27 04:15:31,864 INFO L226 Difference]: Without dead ends: 124 [2020-10-27 04:15:31,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=839, Invalid=2701, Unknown=0, NotChecked=0, Total=3540 [2020-10-27 04:15:31,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-27 04:15:31,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 121. [2020-10-27 04:15:31,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-27 04:15:31,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 144 transitions. [2020-10-27 04:15:31,874 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 144 transitions. Word has length 232 [2020-10-27 04:15:31,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:31,874 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 144 transitions. [2020-10-27 04:15:31,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-27 04:15:31,874 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 144 transitions. [2020-10-27 04:15:31,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-27 04:15:31,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:31,876 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:31,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 04:15:31,876 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:31,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:31,877 INFO L82 PathProgramCache]: Analyzing trace with hash -710469060, now seen corresponding path program 19 times [2020-10-27 04:15:31,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:31,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620863197] [2020-10-27 04:15:31,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:31,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:32,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:32,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:32,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:36,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:36,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-27 04:15:36,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:36,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-27 04:15:36,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:36,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:15:36,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:36,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 04:15:36,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:37,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:37,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:37,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:37,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:37,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:37,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:37,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:37,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:37,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:37,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:37,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:37,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:15:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:37,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:37,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:38,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:38,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 04:15:38,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:38,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 777 [2020-10-27 04:15:38,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:38,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:15:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 04:15:38,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:38,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 04:15:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:38,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:38,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:39,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:39,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 04:15:39,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:39,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 966 [2020-10-27 04:15:39,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:39,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:15:39,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:39,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 04:15:39,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:39,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-27 04:15:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:39,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:39,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:41,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:41,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 04:15:41,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:41,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1145 [2020-10-27 04:15:41,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:41,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:15:41,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:41,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 04:15:41,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:41,112 INFO L134 CoverageAnalysis]: Checked inductivity of 5335 backedges. 1596 proven. 3553 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2020-10-27 04:15:41,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620863197] [2020-10-27 04:15:41,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:41,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-27 04:15:41,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116314898] [2020-10-27 04:15:41,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-27 04:15:41,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:41,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-27 04:15:41,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1343, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 04:15:41,115 INFO L87 Difference]: Start difference. First operand 121 states and 144 transitions. Second operand 43 states. [2020-10-27 04:15:42,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:42,789 INFO L93 Difference]: Finished difference Result 202 states and 253 transitions. [2020-10-27 04:15:42,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-27 04:15:42,789 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 243 [2020-10-27 04:15:42,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:42,790 INFO L225 Difference]: With dead ends: 202 [2020-10-27 04:15:42,790 INFO L226 Difference]: Without dead ends: 126 [2020-10-27 04:15:42,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=923, Invalid=2983, Unknown=0, NotChecked=0, Total=3906 [2020-10-27 04:15:42,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-27 04:15:42,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-10-27 04:15:42,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-27 04:15:42,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 150 transitions. [2020-10-27 04:15:42,800 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 150 transitions. Word has length 243 [2020-10-27 04:15:42,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:42,801 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 150 transitions. [2020-10-27 04:15:42,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-27 04:15:42,801 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 150 transitions. [2020-10-27 04:15:42,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-27 04:15:42,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:42,803 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 20, 20, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:42,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 04:15:42,804 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:42,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:42,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1673146489, now seen corresponding path program 20 times [2020-10-27 04:15:42,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:42,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052150711] [2020-10-27 04:15:42,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:42,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:44,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:48,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:48,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-27 04:15:48,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:48,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5557 [2020-10-27 04:15:48,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:48,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 73 [2020-10-27 04:15:48,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-27 04:15:48,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-27 04:15:48,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:48,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:48,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:48,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:48,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:48,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:48,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:15:48,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:48,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:48,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:48,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:48,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:48,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:15:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:48,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:50,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:50,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 04:15:50,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:50,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1248 [2020-10-27 04:15:50,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:50,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:15:50,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:50,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 04:15:50,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:50,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-27 04:15:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:50,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:51,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:51,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 04:15:51,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:51,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1081 [2020-10-27 04:15:51,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:51,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:15:51,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:51,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 04:15:51,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:52,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-27 04:15:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:52,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:53,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:53,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 04:15:53,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:53,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 896 [2020-10-27 04:15:53,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:53,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:15:53,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:53,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 04:15:53,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:53,501 INFO L134 CoverageAnalysis]: Checked inductivity of 5905 backedges. 0 proven. 5310 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2020-10-27 04:15:53,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052150711] [2020-10-27 04:15:53,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:53,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 04:15:53,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505330244] [2020-10-27 04:15:53,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 04:15:53,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:53,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 04:15:53,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=870, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:15:53,506 INFO L87 Difference]: Start difference. First operand 126 states and 150 transitions. Second operand 31 states. [2020-10-27 04:15:58,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:58,872 INFO L93 Difference]: Finished difference Result 593 states and 867 transitions. [2020-10-27 04:15:58,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 04:15:58,876 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 254 [2020-10-27 04:15:58,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:58,888 INFO L225 Difference]: With dead ends: 593 [2020-10-27 04:15:58,888 INFO L226 Difference]: Without dead ends: 587 [2020-10-27 04:15:58,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=164, Invalid=2916, Unknown=0, NotChecked=0, Total=3080 [2020-10-27 04:15:58,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-10-27 04:15:58,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 516. [2020-10-27 04:15:58,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2020-10-27 04:15:58,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 687 transitions. [2020-10-27 04:15:58,994 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 687 transitions. Word has length 254 [2020-10-27 04:15:58,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:58,998 INFO L481 AbstractCegarLoop]: Abstraction has 516 states and 687 transitions. [2020-10-27 04:15:58,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 04:15:58,998 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 687 transitions. [2020-10-27 04:15:59,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-27 04:15:59,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:59,006 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 59, 20, 20, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:59,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 04:15:59,006 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:59,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:59,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1920756229, now seen corresponding path program 1 times [2020-10-27 04:15:59,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:59,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910480269] [2020-10-27 04:15:59,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:59,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:00,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:03,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:04,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:04,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-27 04:16:04,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:16:04,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5106 [2020-10-27 04:16:04,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:04,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 04:16:04,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 04:16:04,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-27 04:16:04,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:04,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:04,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:04,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:04,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:04,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:04,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:16:04,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:04,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:04,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:04,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:04,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:04,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:16:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:04,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:04,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:06,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:06,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 04:16:06,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:06,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1701 [2020-10-27 04:16:06,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:06,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:16:06,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:06,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 04:16:06,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:07,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-27 04:16:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:07,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:07,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:07,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:07,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 04:16:07,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:07,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-27 04:16:07,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:07,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:16:07,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:07,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 04:16:07,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:07,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-27 04:16:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:07,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:08,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:09,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:09,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 04:16:09,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:09,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1898 [2020-10-27 04:16:09,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:09,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:16:09,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:09,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 04:16:09,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 5905 backedges. 1244 proven. 3057 refuted. 0 times theorem prover too weak. 1604 trivial. 0 not checked. [2020-10-27 04:16:10,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910480269] [2020-10-27 04:16:10,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:10,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-27 04:16:10,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128984728] [2020-10-27 04:16:10,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-27 04:16:10,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:10,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-27 04:16:10,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1117, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 04:16:10,254 INFO L87 Difference]: Start difference. First operand 516 states and 687 transitions. Second operand 35 states. [2020-10-27 04:16:10,743 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-27 04:16:11,882 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2020-10-27 04:16:12,906 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-27 04:16:13,096 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-27 04:16:13,329 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2020-10-27 04:16:14,434 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-27 04:16:14,627 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-27 04:16:14,808 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-27 04:16:15,202 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2020-10-27 04:16:15,850 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2020-10-27 04:16:17,482 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-27 04:16:17,712 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-27 04:16:17,909 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-27 04:16:18,090 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-27 04:16:18,323 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-27 04:16:18,506 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-27 04:16:18,685 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-27 04:16:19,146 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 82 [2020-10-27 04:16:19,866 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2020-10-27 04:16:20,529 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2020-10-27 04:16:21,169 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2020-10-27 04:16:23,962 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-27 04:16:24,222 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-27 04:16:24,467 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-27 04:16:24,681 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-27 04:16:24,919 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-27 04:16:25,144 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-27 04:16:25,364 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-27 04:16:25,556 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-27 04:16:25,787 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-27 04:16:25,991 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-27 04:16:26,197 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-27 04:16:26,393 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-27 04:16:26,599 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-27 04:16:26,802 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-27 04:16:26,987 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-27 04:16:27,171 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-27 04:16:27,462 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 90 [2020-10-27 04:16:27,896 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-27 04:16:28,325 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 82 [2020-10-27 04:16:29,121 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 82 [2020-10-27 04:16:29,862 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2020-10-27 04:16:30,567 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 82 [2020-10-27 04:16:30,945 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 04:16:31,339 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2020-10-27 04:16:32,070 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2020-10-27 04:16:32,805 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2020-10-27 04:16:38,281 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2020-10-27 04:16:38,560 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-27 04:16:38,812 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-27 04:16:39,060 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-27 04:16:39,345 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-27 04:16:39,608 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-27 04:16:39,876 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-27 04:16:40,107 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-27 04:16:40,393 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-27 04:16:40,654 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-27 04:16:40,899 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-27 04:16:41,130 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-27 04:16:41,389 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-27 04:16:41,611 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-27 04:16:41,832 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-27 04:16:42,046 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-27 04:16:42,309 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-27 04:16:42,562 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-27 04:16:42,796 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79