/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/eca-rers2012/Problem16_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:06:27,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:06:27,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:06:27,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:06:27,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:06:27,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:06:27,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:06:27,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:06:27,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:06:27,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:06:27,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:06:27,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:06:27,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:06:27,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:06:27,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:06:27,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:06:27,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:06:27,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:06:27,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:06:27,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:06:27,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:06:27,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:06:27,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:06:27,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:06:27,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:06:27,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:06:27,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:06:27,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:06:27,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:06:27,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:06:27,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:06:27,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:06:27,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:06:27,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:06:27,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:06:27,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:06:27,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:06:27,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:06:27,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:06:27,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:06:27,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:06:27,831 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 [2020-10-29 08:06:27,896 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:06:27,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:06:27,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:06:27,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:06:27,900 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:06:27,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:06:27,902 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:06:27,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:06:27,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:06:27,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:06:27,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:06:27,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:06:27,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:06:27,904 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:06:27,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:06:27,905 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:06:27,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:06:27,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:06:27,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:06:27,906 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:06:27,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:06:27,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:06:27,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:06:27,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:06:27,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:06:27,907 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:06:27,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:06:27,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:06:27,908 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:06:27,908 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:06:28,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:06:28,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:06:28,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:06:28,358 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:06:28,359 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:06:28,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label45.c [2020-10-29 08:06:28,440 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ec687476/94ab172edac84cf6b023343dfee088d6/FLAG12e946d54 [2020-10-29 08:06:29,293 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:06:29,294 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label45.c [2020-10-29 08:06:29,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ec687476/94ab172edac84cf6b023343dfee088d6/FLAG12e946d54 [2020-10-29 08:06:29,444 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ec687476/94ab172edac84cf6b023343dfee088d6 [2020-10-29 08:06:29,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:06:29,458 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:06:29,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:06:29,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:06:29,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:06:29,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:06:29" (1/1) ... [2020-10-29 08:06:29,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2813cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:06:29, skipping insertion in model container [2020-10-29 08:06:29,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:06:29" (1/1) ... [2020-10-29 08:06:29,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:06:29,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:06:30,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:06:30,488 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:06:30,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:06:30,754 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:06:30,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:06:30 WrapperNode [2020-10-29 08:06:30,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:06:30,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:06:30,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:06:30,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:06:30,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:06:30" (1/1) ... [2020-10-29 08:06:30,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:06:30" (1/1) ... [2020-10-29 08:06:30,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:06:30" (1/1) ... [2020-10-29 08:06:30,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:06:30" (1/1) ... [2020-10-29 08:06:30,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:06:30" (1/1) ... [2020-10-29 08:06:30,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:06:30" (1/1) ... [2020-10-29 08:06:30,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:06:30" (1/1) ... [2020-10-29 08:06:30,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:06:30,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:06:30,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:06:30,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:06:30,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:06:30" (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 [2020-10-29 08:06:31,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:06:31,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:06:31,046 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:06:31,046 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:06:31,046 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:06:31,047 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:06:31,047 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:06:31,047 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:06:31,047 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:06:31,047 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:06:31,048 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:06:31,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:06:31,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:06:31,048 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:06:31,048 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:06:31,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:06:31,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:06:31,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:06:31,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:06:31,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:06:31,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:06:33,338 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:06:33,338 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:06:33,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:06:33 BoogieIcfgContainer [2020-10-29 08:06:33,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:06:33,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:06:33,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:06:33,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:06:33,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:06:29" (1/3) ... [2020-10-29 08:06:33,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af39716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:06:33, skipping insertion in model container [2020-10-29 08:06:33,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:06:30" (2/3) ... [2020-10-29 08:06:33,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af39716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:06:33, skipping insertion in model container [2020-10-29 08:06:33,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:06:33" (3/3) ... [2020-10-29 08:06:33,353 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label45.c [2020-10-29 08:06:33,366 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:06:33,372 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:06:33,386 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:06:33,417 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:06:33,418 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:06:33,418 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:06:33,418 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:06:33,418 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:06:33,418 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:06:33,418 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:06:33,418 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:06:33,452 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-29 08:06:33,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 08:06:33,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:06:33,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:06:33,463 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:06:33,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:06:33,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1136483076, now seen corresponding path program 1 times [2020-10-29 08:06:33,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:06:33,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194259532] [2020-10-29 08:06:33,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:06:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:33,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:34,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:34,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:06:34,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:34,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 649 [2020-10-29 08:06:34,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:34,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:34,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:06:34,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:06:34,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 08:06:34,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:06:34,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:06:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:34,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:34,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:34,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:06:34,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:34,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 08:06:34,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:34,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:34,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:06:34,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:06:34,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:06:34,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:06:34,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:06:34,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194259532] [2020-10-29 08:06:34,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:06:34,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:06:34,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749775921] [2020-10-29 08:06:34,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:06:34,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:06:34,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:06:34,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:06:34,703 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-29 08:06:39,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:06:39,100 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-29 08:06:39,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:06:39,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-29 08:06:39,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:06:39,142 INFO L225 Difference]: With dead ends: 1174 [2020-10-29 08:06:39,142 INFO L226 Difference]: Without dead ends: 697 [2020-10-29 08:06:39,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:06:39,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-29 08:06:39,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-29 08:06:39,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-29 08:06:39,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-29 08:06:39,272 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 60 [2020-10-29 08:06:39,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:06:39,273 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-29 08:06:39,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:06:39,273 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-29 08:06:39,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-29 08:06:39,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:06:39,282 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:06:39,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:06:39,283 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:06:39,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:06:39,284 INFO L82 PathProgramCache]: Analyzing trace with hash 2042719492, now seen corresponding path program 1 times [2020-10-29 08:06:39,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:06:39,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653411570] [2020-10-29 08:06:39,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:06:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:39,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:39,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:40,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:40,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 08:06:40,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:06:40,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1390 [2020-10-29 08:06:40,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:40,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:40,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:06:40,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-29 08:06:40,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 08:06:40,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:06:40,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:06:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:40,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:40,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:40,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:06:40,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:40,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 08:06:40,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:40,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:40,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:06:40,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:06:40,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:06:40,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:06:40,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:06:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:40,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:41,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:41,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 08:06:41,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:41,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 08:06:41,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:41,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:41,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:06:41,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:06:41,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 08:06:41,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:41,125 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:06:41,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653411570] [2020-10-29 08:06:41,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:06:41,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:06:41,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891701999] [2020-10-29 08:06:41,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:06:41,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:06:41,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:06:41,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:06:41,133 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 5 states. [2020-10-29 08:06:45,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:06:45,898 INFO L93 Difference]: Finished difference Result 1726 states and 2651 transitions. [2020-10-29 08:06:45,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:06:45,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-10-29 08:06:45,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:06:45,908 INFO L225 Difference]: With dead ends: 1726 [2020-10-29 08:06:45,909 INFO L226 Difference]: Without dead ends: 1039 [2020-10-29 08:06:45,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:06:45,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-29 08:06:45,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1035. [2020-10-29 08:06:45,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2020-10-29 08:06:46,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1430 transitions. [2020-10-29 08:06:46,004 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1430 transitions. Word has length 136 [2020-10-29 08:06:46,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:06:46,005 INFO L481 AbstractCegarLoop]: Abstraction has 1035 states and 1430 transitions. [2020-10-29 08:06:46,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:06:46,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1430 transitions. [2020-10-29 08:06:46,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-29 08:06:46,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:06:46,011 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:06:46,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:06:46,012 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:06:46,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:06:46,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1566881758, now seen corresponding path program 1 times [2020-10-29 08:06:46,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:06:46,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074232913] [2020-10-29 08:06:46,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:06:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:46,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:46,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:47,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:47,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 08:06:47,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:06:47,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1865 [2020-10-29 08:06:47,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:47,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:47,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:06:47,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:06:47,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 08:06:47,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:48,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:06:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:48,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:48,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:48,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:06:48,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:48,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:06:48,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:48,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:48,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:06:48,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:06:48,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:06:48,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:48,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:06:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:48,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:48,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:48,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:06:48,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:48,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-29 08:06:48,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:48,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:48,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:06:48,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:06:48,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-29 08:06:48,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:48,812 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:06:48,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074232913] [2020-10-29 08:06:48,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:06:48,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:06:48,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916701787] [2020-10-29 08:06:48,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:06:48,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:06:48,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:06:48,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:06:48,818 INFO L87 Difference]: Start difference. First operand 1035 states and 1430 transitions. Second operand 7 states. [2020-10-29 08:06:59,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:06:59,234 INFO L93 Difference]: Finished difference Result 2460 states and 3400 transitions. [2020-10-29 08:06:59,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:06:59,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2020-10-29 08:06:59,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:06:59,258 INFO L225 Difference]: With dead ends: 2460 [2020-10-29 08:06:59,258 INFO L226 Difference]: Without dead ends: 1431 [2020-10-29 08:06:59,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:06:59,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2020-10-29 08:06:59,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1390. [2020-10-29 08:06:59,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1390 states. [2020-10-29 08:06:59,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1801 transitions. [2020-10-29 08:06:59,348 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1801 transitions. Word has length 189 [2020-10-29 08:06:59,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:06:59,351 INFO L481 AbstractCegarLoop]: Abstraction has 1390 states and 1801 transitions. [2020-10-29 08:06:59,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:06:59,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1801 transitions. [2020-10-29 08:06:59,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-29 08:06:59,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:06:59,367 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:06:59,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:06:59,368 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:06:59,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:06:59,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1710634366, now seen corresponding path program 1 times [2020-10-29 08:06:59,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:06:59,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613867773] [2020-10-29 08:06:59,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:06:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:59,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:59,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:00,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:01,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:02,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:02,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 08:07:02,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:07:02,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3344 [2020-10-29 08:07:02,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:02,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:02,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:07:02,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:07:02,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-29 08:07:02,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:07:02,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:07:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:07:02,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:02,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:02,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:07:02,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:07:02,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:07:02,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:02,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:02,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:07:02,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:07:02,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:07:02,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:07:02,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:07:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:07:03,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:03,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:03,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:03,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 08:07:03,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:07:03,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-29 08:07:03,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:03,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:03,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:07:03,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:07:03,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 08:07:03,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:07:03,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 08:07:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:07:03,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:03,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:03,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 08:07:03,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:07:03,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-29 08:07:03,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:03,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:03,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:07:03,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:07:03,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-29 08:07:03,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:07:03,637 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 08:07:03,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613867773] [2020-10-29 08:07:03,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:07:03,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:07:03,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654266682] [2020-10-29 08:07:03,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:07:03,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:07:03,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:07:03,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:07:03,640 INFO L87 Difference]: Start difference. First operand 1390 states and 1801 transitions. Second operand 7 states. [2020-10-29 08:07:09,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:07:09,639 INFO L93 Difference]: Finished difference Result 3171 states and 4381 transitions. [2020-10-29 08:07:09,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:07:09,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 249 [2020-10-29 08:07:09,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:07:09,651 INFO L225 Difference]: With dead ends: 3171 [2020-10-29 08:07:09,651 INFO L226 Difference]: Without dead ends: 1759 [2020-10-29 08:07:09,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:07:09,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1759 states. [2020-10-29 08:07:09,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1759 to 1734. [2020-10-29 08:07:09,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1734 states. [2020-10-29 08:07:09,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 1917 transitions. [2020-10-29 08:07:09,713 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 1917 transitions. Word has length 249 [2020-10-29 08:07:09,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:07:09,713 INFO L481 AbstractCegarLoop]: Abstraction has 1734 states and 1917 transitions. [2020-10-29 08:07:09,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:07:09,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 1917 transitions. [2020-10-29 08:07:09,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2020-10-29 08:07:09,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:07:09,723 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:07:09,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:07:09,723 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:07:09,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:07:09,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1733741920, now seen corresponding path program 1 times [2020-10-29 08:07:09,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:07:09,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264169557] [2020-10-29 08:07:09,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:07:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:07:09,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:10,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:12,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:12,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 442 [2020-10-29 08:07:12,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:07:12,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2366 [2020-10-29 08:07:12,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:12,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:12,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:07:12,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-29 08:07:12,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 08:07:12,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:07:12,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:07:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:07:12,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:12,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:12,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:07:12,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:07:12,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:07:12,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:12,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:12,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:07:12,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:07:12,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:07:12,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:07:12,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:07:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:07:12,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:12,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:12,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:07:12,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:07:12,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-29 08:07:12,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:12,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:12,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:07:12,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:07:12,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-29 08:07:12,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:07:12,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:07:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:07:12,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:13,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:13,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:07:13,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:07:13,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-29 08:07:13,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:13,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:13,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:07:13,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:07:13,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-29 08:07:13,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:07:14,089 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 230 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:07:14,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264169557] [2020-10-29 08:07:14,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:07:14,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:07:14,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776680149] [2020-10-29 08:07:14,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:07:14,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:07:14,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:07:14,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:07:14,092 INFO L87 Difference]: Start difference. First operand 1734 states and 1917 transitions. Second operand 8 states. [2020-10-29 08:07:21,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:07:21,299 INFO L93 Difference]: Finished difference Result 5277 states and 6380 transitions. [2020-10-29 08:07:21,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 08:07:21,300 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 428 [2020-10-29 08:07:21,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:07:21,329 INFO L225 Difference]: With dead ends: 5277 [2020-10-29 08:07:21,329 INFO L226 Difference]: Without dead ends: 3886 [2020-10-29 08:07:21,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-29 08:07:21,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3886 states. [2020-10-29 08:07:21,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3886 to 3797. [2020-10-29 08:07:21,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3797 states. [2020-10-29 08:07:21,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3797 states to 3797 states and 4173 transitions. [2020-10-29 08:07:21,474 INFO L78 Accepts]: Start accepts. Automaton has 3797 states and 4173 transitions. Word has length 428 [2020-10-29 08:07:21,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:07:21,475 INFO L481 AbstractCegarLoop]: Abstraction has 3797 states and 4173 transitions. [2020-10-29 08:07:21,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:07:21,475 INFO L276 IsEmpty]: Start isEmpty. Operand 3797 states and 4173 transitions. [2020-10-29 08:07:21,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-10-29 08:07:21,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:07:21,487 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:07:21,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:07:21,487 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:07:21,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:07:21,488 INFO L82 PathProgramCache]: Analyzing trace with hash -908619924, now seen corresponding path program 1 times [2020-10-29 08:07:21,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:07:21,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846770218] [2020-10-29 08:07:21,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:07:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:07:21,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:22,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:22,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:25,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:25,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 484 [2020-10-29 08:07:25,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:07:25,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4353 [2020-10-29 08:07:25,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:25,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:25,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:07:25,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:07:25,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 418 [2020-10-29 08:07:25,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:07:26,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:07:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:07:26,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:26,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:26,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:07:26,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:07:26,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:07:26,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:26,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:26,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:07:26,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:07:26,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:07:26,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:07:26,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:07:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:07:26,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:26,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:26,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:26,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 08:07:26,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:07:26,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-29 08:07:26,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:26,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:26,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:07:26,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:07:26,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-29 08:07:26,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:07:26,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 08:07:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:07:26,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:27,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:27,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 08:07:27,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:07:27,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-29 08:07:27,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:27,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:27,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:07:27,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:07:27,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-29 08:07:27,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:07:27,454 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 261 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 08:07:27,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846770218] [2020-10-29 08:07:27,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:07:27,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:07:27,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455825108] [2020-10-29 08:07:27,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:07:27,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:07:27,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:07:27,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:07:27,457 INFO L87 Difference]: Start difference. First operand 3797 states and 4173 transitions. Second operand 7 states. [2020-10-29 08:07:31,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:07:31,647 INFO L93 Difference]: Finished difference Result 9337 states and 10455 transitions. [2020-10-29 08:07:31,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:07:31,648 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 470 [2020-10-29 08:07:31,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:07:31,676 INFO L225 Difference]: With dead ends: 9337 [2020-10-29 08:07:31,677 INFO L226 Difference]: Without dead ends: 5883 [2020-10-29 08:07:31,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:07:31,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5883 states. [2020-10-29 08:07:31,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5883 to 5873. [2020-10-29 08:07:31,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5873 states. [2020-10-29 08:07:31,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5873 states to 5873 states and 6413 transitions. [2020-10-29 08:07:31,837 INFO L78 Accepts]: Start accepts. Automaton has 5873 states and 6413 transitions. Word has length 470 [2020-10-29 08:07:31,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:07:31,839 INFO L481 AbstractCegarLoop]: Abstraction has 5873 states and 6413 transitions. [2020-10-29 08:07:31,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:07:31,839 INFO L276 IsEmpty]: Start isEmpty. Operand 5873 states and 6413 transitions. [2020-10-29 08:07:31,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2020-10-29 08:07:31,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:07:31,857 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:07:31,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:07:31,857 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:07:31,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:07:31,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1403997824, now seen corresponding path program 1 times [2020-10-29 08:07:31,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:07:31,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936341654] [2020-10-29 08:07:31,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:07:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:07:32,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:32,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:32,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:37,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:37,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 570 [2020-10-29 08:07:37,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:07:37,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 08:07:37,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:37,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:37,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:07:37,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:07:37,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-29 08:07:37,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:07:37,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:07:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:07:37,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:37,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:37,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:07:37,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:07:37,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 08:07:37,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:37,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:37,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:07:37,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:07:37,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:07:37,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:07:37,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:07:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:07:37,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:37,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:37,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:37,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 08:07:37,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:07:37,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-10-29 08:07:37,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:37,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:37,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:07:37,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:07:37,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-29 08:07:37,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:07:37,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 08:07:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:07:37,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:38,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:38,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:07:38,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:07:38,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-29 08:07:38,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:38,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:07:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:07:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-29 08:07:38,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:07:38,804 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 345 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 08:07:38,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936341654] [2020-10-29 08:07:38,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:07:38,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:07:38,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651437510] [2020-10-29 08:07:38,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:07:38,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:07:38,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:07:38,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:07:38,807 INFO L87 Difference]: Start difference. First operand 5873 states and 6413 transitions. Second operand 7 states. [2020-10-29 08:07:42,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:07:42,770 INFO L93 Difference]: Finished difference Result 11423 states and 12510 transitions. [2020-10-29 08:07:42,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:07:42,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 556 [2020-10-29 08:07:42,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:07:42,799 INFO L225 Difference]: With dead ends: 11423 [2020-10-29 08:07:42,799 INFO L226 Difference]: Without dead ends: 5893 [2020-10-29 08:07:42,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:07:42,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5893 states. [2020-10-29 08:07:42,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5893 to 5881. [2020-10-29 08:07:42,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5881 states. [2020-10-29 08:07:42,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5881 states to 5881 states and 6424 transitions. [2020-10-29 08:07:42,967 INFO L78 Accepts]: Start accepts. Automaton has 5881 states and 6424 transitions. Word has length 556 [2020-10-29 08:07:42,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:07:42,968 INFO L481 AbstractCegarLoop]: Abstraction has 5881 states and 6424 transitions. [2020-10-29 08:07:42,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:07:42,968 INFO L276 IsEmpty]: Start isEmpty. Operand 5881 states and 6424 transitions. [2020-10-29 08:07:42,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2020-10-29 08:07:42,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:07:42,976 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:07:42,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:07:42,977 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:07:42,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:07:42,978 INFO L82 PathProgramCache]: Analyzing trace with hash -913792612, now seen corresponding path program 1 times [2020-10-29 08:07:42,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:07:42,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639625653] [2020-10-29 08:07:42,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:07:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:07:43,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:43,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:44,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:44,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 586 [2020-10-29 08:07:44,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:07:44,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1864 [2020-10-29 08:07:44,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:44,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:07:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-29 08:07:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-29 08:07:44,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:07:45,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:07:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:07:45,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:45,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:45,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:07:45,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:07:45,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:07:45,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:45,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:07:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:07:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:07:45,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:07:45,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:07:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:07:45,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:45,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:45,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 08:07:45,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:07:45,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 08:07:45,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:45,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:07:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:07:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:07:45,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:07:45,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 08:07:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:07:45,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:45,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:45,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 08:07:45,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:07:45,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 08:07:45,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:45,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:45,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:07:45,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:07:45,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 08:07:45,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:07:45,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-29 08:07:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:07:45,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:45,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:45,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 08:07:45,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:07:45,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 08:07:45,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:45,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:45,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:07:45,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:07:45,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-29 08:07:45,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:07:45,995 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 418 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-29 08:07:45,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639625653] [2020-10-29 08:07:45,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:07:45,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:07:45,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015031311] [2020-10-29 08:07:45,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:07:45,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:07:45,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:07:45,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:07:45,998 INFO L87 Difference]: Start difference. First operand 5881 states and 6424 transitions. Second operand 7 states. [2020-10-29 08:07:50,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:07:50,139 INFO L93 Difference]: Finished difference Result 13124 states and 14538 transitions. [2020-10-29 08:07:50,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:07:50,145 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 570 [2020-10-29 08:07:50,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:07:50,191 INFO L225 Difference]: With dead ends: 13124 [2020-10-29 08:07:50,191 INFO L226 Difference]: Without dead ends: 7586 [2020-10-29 08:07:50,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:07:50,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7586 states. [2020-10-29 08:07:50,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7586 to 7580. [2020-10-29 08:07:50,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7580 states. [2020-10-29 08:07:50,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7580 states to 7580 states and 8375 transitions. [2020-10-29 08:07:50,414 INFO L78 Accepts]: Start accepts. Automaton has 7580 states and 8375 transitions. Word has length 570 [2020-10-29 08:07:50,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:07:50,415 INFO L481 AbstractCegarLoop]: Abstraction has 7580 states and 8375 transitions. [2020-10-29 08:07:50,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:07:50,416 INFO L276 IsEmpty]: Start isEmpty. Operand 7580 states and 8375 transitions. [2020-10-29 08:07:50,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2020-10-29 08:07:50,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:07:50,428 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:07:50,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:07:50,428 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:07:50,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:07:50,429 INFO L82 PathProgramCache]: Analyzing trace with hash -294016774, now seen corresponding path program 1 times [2020-10-29 08:07:50,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:07:50,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847107731] [2020-10-29 08:07:50,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:07:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:07:50,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:50,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:53,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:53,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 701 [2020-10-29 08:07:53,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:07:53,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2544 [2020-10-29 08:07:53,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:53,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:53,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:07:53,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-29 08:07:53,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-29 08:07:53,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:07:53,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:07:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:07:53,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:53,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:53,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:07:53,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:07:53,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:07:53,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:53,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:53,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:07:53,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:07:53,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:07:53,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:07:53,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:07:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:07:53,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:53,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:53,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:07:53,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:07:53,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 08:07:53,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:53,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:53,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:07:53,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:07:53,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:07:53,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:07:53,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:07:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:07:53,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:53,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:53,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 08:07:53,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:07:53,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 08:07:53,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:53,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:53,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:07:53,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:07:53,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-29 08:07:53,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:07:53,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-29 08:07:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:07:53,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:07:53,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:07:53,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 08:07:53,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:07:53,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 08:07:53,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:07:53,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:07:53,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:07:53,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:07:53,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-29 08:07:53,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:07:54,274 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 481 proven. 2 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-29 08:07:54,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847107731] [2020-10-29 08:07:54,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:07:54,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:07:54,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648846788] [2020-10-29 08:07:54,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:07:54,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:07:54,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:07:54,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:07:54,278 INFO L87 Difference]: Start difference. First operand 7580 states and 8375 transitions. Second operand 7 states. [2020-10-29 08:08:00,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:08:00,614 INFO L93 Difference]: Finished difference Result 17556 states and 19551 transitions. [2020-10-29 08:08:00,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:08:00,615 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 685 [2020-10-29 08:08:00,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:08:00,644 INFO L225 Difference]: With dead ends: 17556 [2020-10-29 08:08:00,644 INFO L226 Difference]: Without dead ends: 10319 [2020-10-29 08:08:00,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:08:00,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10319 states. [2020-10-29 08:08:00,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10319 to 10311. [2020-10-29 08:08:00,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10311 states. [2020-10-29 08:08:00,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10311 states to 10311 states and 11334 transitions. [2020-10-29 08:08:00,862 INFO L78 Accepts]: Start accepts. Automaton has 10311 states and 11334 transitions. Word has length 685 [2020-10-29 08:08:00,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:08:00,863 INFO L481 AbstractCegarLoop]: Abstraction has 10311 states and 11334 transitions. [2020-10-29 08:08:00,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:08:00,864 INFO L276 IsEmpty]: Start isEmpty. Operand 10311 states and 11334 transitions. [2020-10-29 08:08:00,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2020-10-29 08:08:00,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:08:00,876 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:08:00,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:08:00,876 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:08:00,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:08:00,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1773755454, now seen corresponding path program 1 times [2020-10-29 08:08:00,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:08:00,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918002618] [2020-10-29 08:08:00,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:08:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:01,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:02,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:02,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 703 [2020-10-29 08:08:02,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:02,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 962 [2020-10-29 08:08:02,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:02,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:02,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:08:02,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-29 08:08:02,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 08:08:02,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:02,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:08:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:02,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:02,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:02,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:08:02,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:02,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:08:02,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:02,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:02,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:02,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:02,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:02,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:02,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:08:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:02,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:02,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:02,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:08:02,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:02,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 08:08:02,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:02,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:02,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:02,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:02,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:02,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:02,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:08:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:02,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:02,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:02,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-29 08:08:02,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:02,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 08:08:02,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:02,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:02,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:02,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:02,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:02,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:02,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-29 08:08:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:02,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:02,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:02,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 08:08:02,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:02,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 08:08:02,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:02,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:02,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:08:02,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:02,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-29 08:08:02,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:03,215 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 159 proven. 3 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2020-10-29 08:08:03,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918002618] [2020-10-29 08:08:03,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:08:03,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:08:03,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003116141] [2020-10-29 08:08:03,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:08:03,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:08:03,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:08:03,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:08:03,218 INFO L87 Difference]: Start difference. First operand 10311 states and 11334 transitions. Second operand 6 states. [2020-10-29 08:08:08,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:08:08,481 INFO L93 Difference]: Finished difference Result 23997 states and 26607 transitions. [2020-10-29 08:08:08,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:08:08,482 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 687 [2020-10-29 08:08:08,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:08:08,525 INFO L225 Difference]: With dead ends: 23997 [2020-10-29 08:08:08,525 INFO L226 Difference]: Without dead ends: 14370 [2020-10-29 08:08:08,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:08:08,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14370 states. [2020-10-29 08:08:08,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14370 to 13694. [2020-10-29 08:08:08,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13694 states. [2020-10-29 08:08:08,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13694 states to 13694 states and 15020 transitions. [2020-10-29 08:08:08,829 INFO L78 Accepts]: Start accepts. Automaton has 13694 states and 15020 transitions. Word has length 687 [2020-10-29 08:08:08,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:08:08,831 INFO L481 AbstractCegarLoop]: Abstraction has 13694 states and 15020 transitions. [2020-10-29 08:08:08,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:08:08,831 INFO L276 IsEmpty]: Start isEmpty. Operand 13694 states and 15020 transitions. [2020-10-29 08:08:08,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1436 [2020-10-29 08:08:08,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:08:08,873 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:08:08,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 08:08:08,873 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:08:08,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:08:08,874 INFO L82 PathProgramCache]: Analyzing trace with hash 763488862, now seen corresponding path program 1 times [2020-10-29 08:08:08,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:08:08,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68554016] [2020-10-29 08:08:08,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:08:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:09,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:09,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:10,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:12,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:14,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:14,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1461 [2020-10-29 08:08:14,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:08:14,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5158 [2020-10-29 08:08:14,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:14,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:14,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:08:14,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 793 [2020-10-29 08:08:14,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-29 08:08:14,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:14,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:08:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:14,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:14,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:14,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:08:14,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:14,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:08:14,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:14,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:14,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:14,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:08:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:14,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:14,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:14,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:08:14,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:14,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 08:08:14,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:14,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:14,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:14,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:14,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:14,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:14,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:08:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:14,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:14,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:14,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 08:08:14,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:14,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 08:08:14,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:14,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:14,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:14,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:14,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:14,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:14,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-29 08:08:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:14,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:14,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:14,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:08:14,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:14,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 08:08:14,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:14,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:14,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:14,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:14,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:14,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:14,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-29 08:08:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:14,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:14,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:14,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:08:14,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:14,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 08:08:14,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:14,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:14,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:14,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:14,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:14,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:14,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-29 08:08:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:14,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:15,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:15,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:08:15,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:15,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-29 08:08:15,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:15,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:15,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:08:15,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:15,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:08:15,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:15,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 783 [2020-10-29 08:08:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:15,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:15,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:15,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:08:15,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:15,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-29 08:08:15,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:15,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:15,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:08:15,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:08:15,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-29 08:08:15,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:15,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1056 [2020-10-29 08:08:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:15,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:15,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:15,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 08:08:15,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:15,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 08:08:15,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:15,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:15,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:15,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 08:08:15,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:15,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:15,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1168 [2020-10-29 08:08:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:15,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:16,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:16,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 08:08:16,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:16,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 08:08:16,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:16,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:16,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:16,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-29 08:08:16,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:16,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:17,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3992 backedges. 1236 proven. 323 refuted. 0 times theorem prover too weak. 2433 trivial. 0 not checked. [2020-10-29 08:08:17,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68554016] [2020-10-29 08:08:17,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:08:17,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:08:17,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024198363] [2020-10-29 08:08:17,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:08:17,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:08:17,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:08:17,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:08:17,398 INFO L87 Difference]: Start difference. First operand 13694 states and 15020 transitions. Second operand 7 states. [2020-10-29 08:08:21,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:08:21,423 INFO L93 Difference]: Finished difference Result 27416 states and 30174 transitions. [2020-10-29 08:08:21,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:08:21,429 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1435 [2020-10-29 08:08:21,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:08:21,478 INFO L225 Difference]: With dead ends: 27416 [2020-10-29 08:08:21,479 INFO L226 Difference]: Without dead ends: 14406 [2020-10-29 08:08:21,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:08:21,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14406 states. [2020-10-29 08:08:21,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14406 to 14378. [2020-10-29 08:08:21,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14378 states. [2020-10-29 08:08:21,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14378 states to 14378 states and 15740 transitions. [2020-10-29 08:08:21,765 INFO L78 Accepts]: Start accepts. Automaton has 14378 states and 15740 transitions. Word has length 1435 [2020-10-29 08:08:21,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:08:21,768 INFO L481 AbstractCegarLoop]: Abstraction has 14378 states and 15740 transitions. [2020-10-29 08:08:21,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:08:21,768 INFO L276 IsEmpty]: Start isEmpty. Operand 14378 states and 15740 transitions. [2020-10-29 08:08:21,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1447 [2020-10-29 08:08:21,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:08:21,809 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:08:21,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 08:08:21,810 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:08:21,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:08:21,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1857503588, now seen corresponding path program 1 times [2020-10-29 08:08:21,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:08:21,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001498607] [2020-10-29 08:08:21,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:08:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:22,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:22,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:22,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:27,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:27,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1470 [2020-10-29 08:08:27,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:08:27,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 08:08:27,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:27,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:27,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 08:08:27,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 802 [2020-10-29 08:08:27,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 664 [2020-10-29 08:08:27,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:27,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:08:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:27,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:27,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:27,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:08:27,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:27,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:08:27,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:27,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:27,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:27,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:27,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:27,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:27,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:08:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:27,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:27,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:27,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:08:27,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:27,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 08:08:27,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:27,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:27,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:27,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:27,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:27,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:27,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:08:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:27,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:27,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:27,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 08:08:27,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:27,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 08:08:27,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:27,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:27,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:27,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:27,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:27,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:27,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-29 08:08:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:27,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:27,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:27,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:08:27,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:27,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 08:08:27,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:27,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:27,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:27,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:27,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:27,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:27,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-29 08:08:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:27,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:27,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:27,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 08:08:27,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:27,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-29 08:08:27,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:27,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:27,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:08:27,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:27,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 08:08:27,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:27,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-29 08:08:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:27,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:28,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:28,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:28,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:08:28,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:08:28,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-10-29 08:08:28,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:28,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:28,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:08:28,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:28,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-29 08:08:28,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:28,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-29 08:08:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:28,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:28,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:28,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:28,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 08:08:28,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:08:28,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 08:08:28,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:28,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:08:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 08:08:28,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:28,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1179 [2020-10-29 08:08:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:28,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:28,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:28,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:28,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 08:08:28,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:08:28,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-29 08:08:28,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:28,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:28,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:08:28,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:28,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-29 08:08:28,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:29,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3791 backedges. 420 proven. 7 refuted. 0 times theorem prover too weak. 3364 trivial. 0 not checked. [2020-10-29 08:08:29,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001498607] [2020-10-29 08:08:29,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:08:29,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:08:29,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646731994] [2020-10-29 08:08:29,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:08:29,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:08:29,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:08:29,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:08:29,807 INFO L87 Difference]: Start difference. First operand 14378 states and 15740 transitions. Second operand 6 states. [2020-10-29 08:08:33,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:08:33,792 INFO L93 Difference]: Finished difference Result 28074 states and 30788 transitions. [2020-10-29 08:08:33,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:08:33,793 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1446 [2020-10-29 08:08:33,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:08:33,835 INFO L225 Difference]: With dead ends: 28074 [2020-10-29 08:08:33,835 INFO L226 Difference]: Without dead ends: 14380 [2020-10-29 08:08:33,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:08:33,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14380 states. [2020-10-29 08:08:34,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14380 to 14378. [2020-10-29 08:08:34,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14378 states. [2020-10-29 08:08:34,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14378 states to 14378 states and 15431 transitions. [2020-10-29 08:08:34,100 INFO L78 Accepts]: Start accepts. Automaton has 14378 states and 15431 transitions. Word has length 1446 [2020-10-29 08:08:34,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:08:34,102 INFO L481 AbstractCegarLoop]: Abstraction has 14378 states and 15431 transitions. [2020-10-29 08:08:34,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:08:34,102 INFO L276 IsEmpty]: Start isEmpty. Operand 14378 states and 15431 transitions. [2020-10-29 08:08:34,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1519 [2020-10-29 08:08:34,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:08:34,145 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:08:34,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 08:08:34,145 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:08:34,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:08:34,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1911394524, now seen corresponding path program 1 times [2020-10-29 08:08:34,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:08:34,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488605461] [2020-10-29 08:08:34,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:08:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:34,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:34,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:35,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:38,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:38,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:39,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:39,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1544 [2020-10-29 08:08:39,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:08:39,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5280 [2020-10-29 08:08:39,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:39,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:39,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:08:39,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 802 [2020-10-29 08:08:39,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-29 08:08:39,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:39,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:08:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:39,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:39,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:39,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:08:39,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:39,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:08:39,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:39,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:39,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:39,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:39,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:39,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:39,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:08:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:40,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:40,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:40,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:08:40,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:40,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 08:08:40,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:40,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:40,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:40,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:40,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:40,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:40,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:08:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:40,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:40,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:40,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 08:08:40,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:40,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 08:08:40,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:40,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:40,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:40,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:40,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:40,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:40,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-29 08:08:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:40,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:40,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:40,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:08:40,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:40,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-29 08:08:40,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:40,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:40,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:40,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:40,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:40,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:40,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-29 08:08:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:40,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:40,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:40,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 08:08:40,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:40,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 08:08:40,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:40,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:40,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:08:40,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:40,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 08:08:40,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:40,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-29 08:08:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:40,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:40,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:40,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:08:40,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:40,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-29 08:08:40,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:40,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:40,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:08:40,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:08:40,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-29 08:08:40,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:41,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-29 08:08:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:41,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:41,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:41,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 08:08:41,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:41,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 08:08:41,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:41,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:41,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:41,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 08:08:41,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:41,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:41,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1179 [2020-10-29 08:08:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:41,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:41,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:41,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 08:08:41,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:41,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 08:08:41,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:41,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:41,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:41,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-29 08:08:41,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:41,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:41,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1394 [2020-10-29 08:08:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:41,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:41,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:41,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:08:41,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:41,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 08:08:41,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:41,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 08:08:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:41,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:43,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 1253 proven. 392 refuted. 0 times theorem prover too weak. 2702 trivial. 0 not checked. [2020-10-29 08:08:43,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488605461] [2020-10-29 08:08:43,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:08:43,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:08:43,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669066847] [2020-10-29 08:08:43,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:08:43,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:08:43,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:08:43,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:08:43,467 INFO L87 Difference]: Start difference. First operand 14378 states and 15431 transitions. Second operand 7 states. [2020-10-29 08:08:48,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:08:48,216 INFO L93 Difference]: Finished difference Result 29101 states and 31264 transitions. [2020-10-29 08:08:48,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:08:48,222 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1518 [2020-10-29 08:08:48,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:08:48,267 INFO L225 Difference]: With dead ends: 29101 [2020-10-29 08:08:48,267 INFO L226 Difference]: Without dead ends: 15407 [2020-10-29 08:08:48,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:08:48,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15407 states. [2020-10-29 08:08:48,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15407 to 15395. [2020-10-29 08:08:48,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15395 states. [2020-10-29 08:08:48,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15395 states to 15395 states and 16480 transitions. [2020-10-29 08:08:48,537 INFO L78 Accepts]: Start accepts. Automaton has 15395 states and 16480 transitions. Word has length 1518 [2020-10-29 08:08:48,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:08:48,538 INFO L481 AbstractCegarLoop]: Abstraction has 15395 states and 16480 transitions. [2020-10-29 08:08:48,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:08:48,539 INFO L276 IsEmpty]: Start isEmpty. Operand 15395 states and 16480 transitions. [2020-10-29 08:08:48,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1636 [2020-10-29 08:08:48,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:08:48,580 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:08:48,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 08:08:48,581 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:08:48,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:08:48,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1356114802, now seen corresponding path program 1 times [2020-10-29 08:08:48,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:08:48,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606973360] [2020-10-29 08:08:48,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:08:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:48,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:49,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:52,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:53,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:53,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:53,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:53,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1661 [2020-10-29 08:08:53,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:08:53,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-29 08:08:53,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:53,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:53,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:08:53,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-29 08:08:53,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-29 08:08:53,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:54,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:08:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:54,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:54,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:54,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:08:54,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:54,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:08:54,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:54,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:54,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:54,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:54,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:54,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:54,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:08:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:54,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:54,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:54,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:08:54,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:54,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 08:08:54,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:54,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:54,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:54,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:54,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:54,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:54,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:08:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:54,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:54,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:54,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-29 08:08:54,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:54,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 08:08:54,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:54,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:54,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:54,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:54,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:54,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:54,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-29 08:08:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:54,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:54,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:54,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 08:08:54,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:54,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 08:08:54,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:54,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:54,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:08:54,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:54,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-29 08:08:54,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:54,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-29 08:08:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:54,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:54,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:54,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-29 08:08:54,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:54,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-29 08:08:54,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:54,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:54,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:08:54,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:08:54,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 277 [2020-10-29 08:08:54,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:55,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 911 [2020-10-29 08:08:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:55,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:55,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:55,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:08:55,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:55,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-29 08:08:55,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:55,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:55,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:55,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-29 08:08:55,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:55,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:55,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1184 [2020-10-29 08:08:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:55,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:55,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:55,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 08:08:55,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:55,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 08:08:55,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:55,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:55,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:55,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 08:08:55,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:55,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:55,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1296 [2020-10-29 08:08:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:55,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:55,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:55,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 08:08:55,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:55,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 08:08:55,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:55,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:55,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:55,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-29 08:08:55,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:55,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:55,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1511 [2020-10-29 08:08:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:55,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:55,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:55,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:08:55,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:55,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:08:55,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:55,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:55,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:08:55,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 08:08:55,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:08:55,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:08:56,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 1092 proven. 662 refuted. 0 times theorem prover too weak. 2939 trivial. 0 not checked. [2020-10-29 08:08:56,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606973360] [2020-10-29 08:08:56,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:08:56,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:08:56,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132238780] [2020-10-29 08:08:56,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:08:56,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:08:56,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:08:56,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:08:56,973 INFO L87 Difference]: Start difference. First operand 15395 states and 16480 transitions. Second operand 7 states. [2020-10-29 08:08:57,123 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 08:09:00,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:09:00,927 INFO L93 Difference]: Finished difference Result 31134 states and 33429 transitions. [2020-10-29 08:09:00,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:09:00,929 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1635 [2020-10-29 08:09:00,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:09:00,972 INFO L225 Difference]: With dead ends: 31134 [2020-10-29 08:09:00,973 INFO L226 Difference]: Without dead ends: 16423 [2020-10-29 08:09:00,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:09:01,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16423 states. [2020-10-29 08:09:01,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16423 to 16411. [2020-10-29 08:09:01,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16411 states. [2020-10-29 08:09:01,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16411 states to 16411 states and 17548 transitions. [2020-10-29 08:09:01,267 INFO L78 Accepts]: Start accepts. Automaton has 16411 states and 17548 transitions. Word has length 1635 [2020-10-29 08:09:01,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:09:01,269 INFO L481 AbstractCegarLoop]: Abstraction has 16411 states and 17548 transitions. [2020-10-29 08:09:01,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:09:01,269 INFO L276 IsEmpty]: Start isEmpty. Operand 16411 states and 17548 transitions. [2020-10-29 08:09:01,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1655 [2020-10-29 08:09:01,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:09:01,313 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:09:01,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 08:09:01,314 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:09:01,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:09:01,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1553443500, now seen corresponding path program 1 times [2020-10-29 08:09:01,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:09:01,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172356556] [2020-10-29 08:09:01,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:09:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:01,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:02,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:02,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:02,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:02,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:06,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:06,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1682 [2020-10-29 08:09:06,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:09:06,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-29 08:09:06,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:06,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:06,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:09:06,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 676 [2020-10-29 08:09:06,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-29 08:09:06,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:06,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:09:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:06,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:06,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:06,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:09:06,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:06,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:09:06,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:06,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:06,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:06,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:06,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:06,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:06,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:09:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:06,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:07,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:07,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:09:07,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:07,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 08:09:07,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:07,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:07,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:07,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:07,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:07,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:07,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:09:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:07,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:07,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:07,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 08:09:07,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:07,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 08:09:07,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:07,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:07,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:07,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:07,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:07,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:07,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-29 08:09:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:07,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:07,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:07,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:09:07,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:07,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 08:09:07,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:07,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:07,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:07,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:07,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:07,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:07,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-29 08:09:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:07,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:07,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:07,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:09:07,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:07,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 08:09:07,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:07,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:07,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:09:07,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:07,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 08:09:07,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:07,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-29 08:09:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:07,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:07,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:07,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 08:09:07,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:07,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-29 08:09:07,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:07,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:07,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:09:07,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:09:07,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-29 08:09:07,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:07,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 930 [2020-10-29 08:09:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:07,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:07,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:07,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:09:07,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:07,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 08:09:07,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:07,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:07,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:07,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-29 08:09:07,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:07,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:08,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1203 [2020-10-29 08:09:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:08,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:08,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:08,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 08:09:08,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:08,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 08:09:08,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:08,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:08,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:08,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 08:09:08,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:08,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:08,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1315 [2020-10-29 08:09:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:08,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:08,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:08,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 08:09:08,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:08,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 08:09:08,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:08,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-29 08:09:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:08,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:08,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1530 [2020-10-29 08:09:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:08,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:08,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:08,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:09:08,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:08,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 08:09:08,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:08,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:08,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:08,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 08:09:08,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:08,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:10,238 INFO L134 CoverageAnalysis]: Checked inductivity of 5110 backedges. 1195 proven. 651 refuted. 0 times theorem prover too weak. 3264 trivial. 0 not checked. [2020-10-29 08:09:10,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172356556] [2020-10-29 08:09:10,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:09:10,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:09:10,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483084124] [2020-10-29 08:09:10,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:09:10,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:09:10,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:09:10,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:09:10,241 INFO L87 Difference]: Start difference. First operand 16411 states and 17548 transitions. Second operand 7 states. [2020-10-29 08:09:15,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:09:15,434 INFO L93 Difference]: Finished difference Result 33829 states and 36274 transitions. [2020-10-29 08:09:15,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:09:15,435 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1654 [2020-10-29 08:09:15,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:09:15,482 INFO L225 Difference]: With dead ends: 33829 [2020-10-29 08:09:15,483 INFO L226 Difference]: Without dead ends: 18102 [2020-10-29 08:09:15,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:09:15,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18102 states. [2020-10-29 08:09:15,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18102 to 17424. [2020-10-29 08:09:15,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17424 states. [2020-10-29 08:09:15,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17424 states to 17424 states and 18558 transitions. [2020-10-29 08:09:15,801 INFO L78 Accepts]: Start accepts. Automaton has 17424 states and 18558 transitions. Word has length 1654 [2020-10-29 08:09:15,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:09:15,801 INFO L481 AbstractCegarLoop]: Abstraction has 17424 states and 18558 transitions. [2020-10-29 08:09:15,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:09:15,802 INFO L276 IsEmpty]: Start isEmpty. Operand 17424 states and 18558 transitions. [2020-10-29 08:09:15,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1658 [2020-10-29 08:09:15,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:09:15,846 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:09:15,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 08:09:15,846 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:09:15,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:09:15,847 INFO L82 PathProgramCache]: Analyzing trace with hash -769508706, now seen corresponding path program 1 times [2020-10-29 08:09:15,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:09:15,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033224007] [2020-10-29 08:09:15,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:09:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:16,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:16,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:17,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:18,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:21,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:21,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1685 [2020-10-29 08:09:21,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:09:21,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-29 08:09:21,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:21,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:09:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 679 [2020-10-29 08:09:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-29 08:09:21,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:21,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:09:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:21,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:21,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:21,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:09:21,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:21,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:09:21,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:21,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:21,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:21,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:21,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:21,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:21,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:09:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:21,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:21,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:21,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:09:21,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:21,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 08:09:21,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:21,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:21,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:21,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:21,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:21,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:21,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:09:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:21,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:21,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:21,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-29 08:09:21,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:21,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 08:09:21,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:21,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:21,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:21,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:21,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:21,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:21,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-29 08:09:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:21,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:21,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:21,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:09:21,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:21,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:09:21,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:21,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:21,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:21,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:21,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:21,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:21,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-29 08:09:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:21,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:21,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:21,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:09:21,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:21,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 08:09:21,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:21,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:21,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:09:21,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:21,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 08:09:21,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:21,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 671 [2020-10-29 08:09:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:21,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:22,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:22,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 08:09:22,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:22,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-29 08:09:22,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:22,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:22,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:09:22,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:09:22,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-29 08:09:22,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:22,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 933 [2020-10-29 08:09:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:22,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:22,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:22,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:09:22,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:22,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 08:09:22,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:22,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:22,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:22,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-29 08:09:22,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:22,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:22,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1206 [2020-10-29 08:09:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:22,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:22,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:22,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 08:09:22,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:22,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 08:09:22,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:22,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:22,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:22,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 08:09:22,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:22,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:22,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1318 [2020-10-29 08:09:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:22,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:22,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:22,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 08:09:22,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:22,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 08:09:22,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:22,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:22,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:22,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-29 08:09:22,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:22,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:22,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1533 [2020-10-29 08:09:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:22,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:22,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:22,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:09:22,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:22,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 08:09:22,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:22,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:22,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:22,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 08:09:22,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:22,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:24,713 INFO L134 CoverageAnalysis]: Checked inductivity of 5124 backedges. 1198 proven. 651 refuted. 0 times theorem prover too weak. 3275 trivial. 0 not checked. [2020-10-29 08:09:24,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033224007] [2020-10-29 08:09:24,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:09:24,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:09:24,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756991500] [2020-10-29 08:09:24,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:09:24,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:09:24,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:09:24,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:09:24,728 INFO L87 Difference]: Start difference. First operand 17424 states and 18558 transitions. Second operand 7 states. [2020-10-29 08:09:29,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:09:29,623 INFO L93 Difference]: Finished difference Result 35187 states and 37591 transitions. [2020-10-29 08:09:29,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 08:09:29,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1657 [2020-10-29 08:09:29,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:09:29,672 INFO L225 Difference]: With dead ends: 35187 [2020-10-29 08:09:29,672 INFO L226 Difference]: Without dead ends: 18447 [2020-10-29 08:09:29,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:09:29,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18447 states. [2020-10-29 08:09:29,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18447 to 18098. [2020-10-29 08:09:29,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18098 states. [2020-10-29 08:09:29,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18098 states to 18098 states and 19249 transitions. [2020-10-29 08:09:29,967 INFO L78 Accepts]: Start accepts. Automaton has 18098 states and 19249 transitions. Word has length 1657 [2020-10-29 08:09:29,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:09:29,968 INFO L481 AbstractCegarLoop]: Abstraction has 18098 states and 19249 transitions. [2020-10-29 08:09:29,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:09:29,968 INFO L276 IsEmpty]: Start isEmpty. Operand 18098 states and 19249 transitions. [2020-10-29 08:09:30,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1662 [2020-10-29 08:09:30,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:09:30,132 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:09:30,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 08:09:30,132 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:09:30,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:09:30,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1840263954, now seen corresponding path program 1 times [2020-10-29 08:09:30,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:09:30,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802938181] [2020-10-29 08:09:30,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:09:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:30,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:30,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:33,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:34,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:34,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:35,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:35,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1687 [2020-10-29 08:09:35,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:09:35,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 08:09:35,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:35,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:35,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:09:35,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 945 [2020-10-29 08:09:35,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-29 08:09:35,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:35,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:09:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:35,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:35,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:35,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:09:35,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:35,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:09:35,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:35,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:35,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:35,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:09:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:35,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:35,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:35,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 08:09:35,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:35,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-29 08:09:35,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:35,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:35,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:35,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:35,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:35,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:36,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 08:09:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:36,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:36,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:36,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 08:09:36,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:36,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 08:09:36,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:36,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:36,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:36,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:36,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:36,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:36,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-29 08:09:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:36,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:36,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:36,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:09:36,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:36,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 08:09:36,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:36,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:36,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:36,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:36,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:36,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:36,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-10-29 08:09:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:36,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:36,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:36,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-29 08:09:36,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:36,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-29 08:09:36,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:36,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:36,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:09:36,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:36,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 271 [2020-10-29 08:09:36,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:36,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 937 [2020-10-29 08:09:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:36,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:36,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:36,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:09:36,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:36,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-29 08:09:36,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:36,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:09:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:09:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-29 08:09:36,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:37,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1210 [2020-10-29 08:09:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:37,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:37,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:37,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 08:09:37,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:37,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 08:09:37,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:37,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:37,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:37,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 08:09:37,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:37,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:37,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1322 [2020-10-29 08:09:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:37,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:37,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:37,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 08:09:37,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:37,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 08:09:37,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:37,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:37,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:37,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-29 08:09:37,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:37,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:37,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1537 [2020-10-29 08:09:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:37,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:37,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:37,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:09:37,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:37,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:09:37,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:37,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:37,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:37,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 08:09:37,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:37,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:39,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4749 backedges. 1393 proven. 392 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-10-29 08:09:39,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802938181] [2020-10-29 08:09:39,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:09:39,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:09:39,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092231225] [2020-10-29 08:09:39,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:09:39,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:09:39,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:09:39,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:09:39,764 INFO L87 Difference]: Start difference. First operand 18098 states and 19249 transitions. Second operand 8 states. [2020-10-29 08:09:46,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:09:46,564 INFO L93 Difference]: Finished difference Result 37887 states and 40396 transitions. [2020-10-29 08:09:46,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 08:09:46,565 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1661 [2020-10-29 08:09:46,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:09:46,625 INFO L225 Difference]: With dead ends: 37887 [2020-10-29 08:09:46,625 INFO L226 Difference]: Without dead ends: 20473 [2020-10-29 08:09:46,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-29 08:09:46,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20473 states. [2020-10-29 08:09:46,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20473 to 20461. [2020-10-29 08:09:46,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20461 states. [2020-10-29 08:09:46,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20461 states to 20461 states and 21675 transitions. [2020-10-29 08:09:46,991 INFO L78 Accepts]: Start accepts. Automaton has 20461 states and 21675 transitions. Word has length 1661 [2020-10-29 08:09:46,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:09:46,993 INFO L481 AbstractCegarLoop]: Abstraction has 20461 states and 21675 transitions. [2020-10-29 08:09:46,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:09:46,993 INFO L276 IsEmpty]: Start isEmpty. Operand 20461 states and 21675 transitions. [2020-10-29 08:09:47,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1720 [2020-10-29 08:09:47,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:09:47,040 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:09:47,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 08:09:47,041 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:09:47,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:09:47,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1541918238, now seen corresponding path program 1 times [2020-10-29 08:09:47,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:09:47,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186059799] [2020-10-29 08:09:47,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:09:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:47,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:47,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:48,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:52,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:52,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1747 [2020-10-29 08:09:52,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:09:52,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 08:09:52,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:52,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:09:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1005 [2020-10-29 08:09:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-29 08:09:52,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:52,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:09:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:52,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:52,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:52,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:09:52,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:52,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:09:52,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:52,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:52,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:52,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:52,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:52,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:52,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:09:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:52,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:52,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:52,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:09:52,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:52,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 08:09:52,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:52,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:52,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:52,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:52,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:52,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:52,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:09:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:52,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:52,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:52,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-29 08:09:52,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:52,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 08:09:52,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:52,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:52,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:52,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-29 08:09:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:52,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:52,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:52,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:09:52,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:52,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:09:52,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:52,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:52,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:52,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:52,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:52,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:52,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-29 08:09:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:52,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:52,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:52,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-29 08:09:52,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:52,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 08:09:52,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:52,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:52,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:52,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:52,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:52,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:52,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-29 08:09:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:53,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:53,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:53,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 08:09:53,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:53,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-29 08:09:53,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:53,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:53,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:09:53,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:53,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 257 [2020-10-29 08:09:53,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:53,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 995 [2020-10-29 08:09:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:53,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:53,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:53,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:09:53,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:53,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-29 08:09:53,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:53,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:53,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:09:53,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:09:53,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-29 08:09:53,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:53,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1268 [2020-10-29 08:09:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:53,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:53,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:53,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 08:09:53,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:53,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 08:09:53,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:53,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:53,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:53,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 08:09:53,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:53,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:53,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1380 [2020-10-29 08:09:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:54,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:54,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:54,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 08:09:54,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:54,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 08:09:54,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:54,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:54,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:54,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-29 08:09:54,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:54,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:54,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1595 [2020-10-29 08:09:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:54,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:54,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:54,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:09:54,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:54,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:09:54,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:54,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:54,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:54,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 08:09:54,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:54,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:55,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5537 backedges. 1520 proven. 392 refuted. 0 times theorem prover too weak. 3625 trivial. 0 not checked. [2020-10-29 08:09:55,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186059799] [2020-10-29 08:09:55,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:09:55,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:09:55,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427325570] [2020-10-29 08:09:55,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:09:55,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:09:55,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:09:55,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:09:55,670 INFO L87 Difference]: Start difference. First operand 20461 states and 21675 transitions. Second operand 8 states.