/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:02:00,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:02:00,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:02:00,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:02:00,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:02:00,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:02:00,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:02:00,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:02:00,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:02:00,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:02:00,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:02:00,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:02:00,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:02:00,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:02:00,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:02:00,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:02:00,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:02:00,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:02:00,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:02:00,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:02:00,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:02:00,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:02:00,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:02:00,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:02:00,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:02:00,887 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:02:00,887 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:02:00,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:02:00,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:02:00,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-27 00:02:00,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:02:00,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:02:00,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:02:00,901 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 00:02:00,952 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:02:00,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:02:00,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:02:00,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:02:00,954 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:02:00,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:02:00,955 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:02:00,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:02:00,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:02:00,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:02:00,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:02:00,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:02:00,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:02:00,957 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:02:00,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:02:00,957 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:02:00,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:02:00,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:02:00,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:02:00,958 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:02:00,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:02:00,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:02:00,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:02:00,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:02:00,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:02:00,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:02:00,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:02:00,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:02:00,960 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:02:00,960 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:02:01,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:02:01,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:02:01,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:02:01,429 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:02:01,430 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:02:01,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label48.c [2020-10-27 00:02:01,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92d573eb0/c45dee80011947f49e52ed16fcb8c34c/FLAGf7bef81dc [2020-10-27 00:02:02,276 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:02:02,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label48.c [2020-10-27 00:02:02,307 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92d573eb0/c45dee80011947f49e52ed16fcb8c34c/FLAGf7bef81dc [2020-10-27 00:02:02,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92d573eb0/c45dee80011947f49e52ed16fcb8c34c [2020-10-27 00:02:02,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:02:02,433 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:02:02,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:02:02,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:02:02,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:02:02,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:02:02" (1/1) ... [2020-10-27 00:02:02,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e12fac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:02, skipping insertion in model container [2020-10-27 00:02:02,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:02:02" (1/1) ... [2020-10-27 00:02:02,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:02:02,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:02:03,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:02:03,343 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:02:03,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:02:03,770 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:02:03,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:03 WrapperNode [2020-10-27 00:02:03,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:02:03,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:02:03,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:02:03,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:02:03,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:03" (1/1) ... [2020-10-27 00:02:03,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:03" (1/1) ... [2020-10-27 00:02:03,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:03" (1/1) ... [2020-10-27 00:02:03,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:03" (1/1) ... [2020-10-27 00:02:03,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:03" (1/1) ... [2020-10-27 00:02:03,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:03" (1/1) ... [2020-10-27 00:02:03,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:03" (1/1) ... [2020-10-27 00:02:04,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:02:04,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:02:04,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:02:04,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:02:04,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:02:04,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:02:04,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:02:04,098 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:02:04,098 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:02:04,098 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:02:04,098 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:02:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:02:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:02:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:02:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:02:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:02:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:02:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:02:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:02:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:02:04,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:02:04,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:02:04,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:02:04,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:02:04,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:02:04,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:02:06,367 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:02:06,368 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:02:06,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:02:06 BoogieIcfgContainer [2020-10-27 00:02:06,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:02:06,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:02:06,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:02:06,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:02:06,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:02:02" (1/3) ... [2020-10-27 00:02:06,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484b35fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:02:06, skipping insertion in model container [2020-10-27 00:02:06,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:03" (2/3) ... [2020-10-27 00:02:06,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484b35fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:02:06, skipping insertion in model container [2020-10-27 00:02:06,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:02:06" (3/3) ... [2020-10-27 00:02:06,379 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label48.c [2020-10-27 00:02:06,391 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:02:06,397 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:02:06,410 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:02:06,442 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:02:06,442 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:02:06,442 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:02:06,442 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:02:06,442 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:02:06,442 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:02:06,443 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:02:06,443 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:02:06,469 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-27 00:02:06,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 00:02:06,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:06,480 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:02:06,480 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:06,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:06,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1107542924, now seen corresponding path program 1 times [2020-10-27 00:02:06,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:06,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343375190] [2020-10-27 00:02:06,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:06,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:07,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:07,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 00:02:07,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:07,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-10-27 00:02:07,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:07,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:02:07,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:02:07,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:02:07,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:02:07,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:07,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:07,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:07,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:07,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:07,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 00:02:07,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:07,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:07,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:07,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:02:07,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:07,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:02:07,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343375190] [2020-10-27 00:02:07,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:02:07,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 00:02:07,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87192237] [2020-10-27 00:02:07,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:02:07,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:07,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:02:07,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:02:07,650 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 5 states. [2020-10-27 00:02:14,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:14,438 INFO L93 Difference]: Finished difference Result 1520 states and 2855 transitions. [2020-10-27 00:02:14,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:02:14,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-27 00:02:14,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:14,466 INFO L225 Difference]: With dead ends: 1520 [2020-10-27 00:02:14,466 INFO L226 Difference]: Without dead ends: 1039 [2020-10-27 00:02:14,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:02:14,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-27 00:02:14,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1035. [2020-10-27 00:02:14,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2020-10-27 00:02:14,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1486 transitions. [2020-10-27 00:02:14,631 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1486 transitions. Word has length 71 [2020-10-27 00:02:14,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:14,633 INFO L481 AbstractCegarLoop]: Abstraction has 1035 states and 1486 transitions. [2020-10-27 00:02:14,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:02:14,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1486 transitions. [2020-10-27 00:02:14,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-27 00:02:14,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:14,648 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, 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] [2020-10-27 00:02:14,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:02:14,648 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:14,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:14,649 INFO L82 PathProgramCache]: Analyzing trace with hash 253170677, now seen corresponding path program 1 times [2020-10-27 00:02:14,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:14,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658400049] [2020-10-27 00:02:14,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:14,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:15,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:15,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:16,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:16,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 00:02:16,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:02:16,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1517 [2020-10-27 00:02:16,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:02:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:02:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:02:16,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:02:16,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:16,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:16,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:16,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:16,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:16,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 00:02:16,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:16,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:16,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:16,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:02:16,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:02:16,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:16,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:16,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:16,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:02:16,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:16,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-27 00:02:16,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:16,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:16,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:16,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:02:16,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:02:16,750 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:02:16,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658400049] [2020-10-27 00:02:16,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:02:16,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 00:02:16,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736547757] [2020-10-27 00:02:16,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:02:16,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:16,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:02:16,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:02:16,756 INFO L87 Difference]: Start difference. First operand 1035 states and 1486 transitions. Second operand 8 states. [2020-10-27 00:02:24,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:24,198 INFO L93 Difference]: Finished difference Result 4148 states and 6100 transitions. [2020-10-27 00:02:24,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:02:24,201 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 147 [2020-10-27 00:02:24,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:24,225 INFO L225 Difference]: With dead ends: 4148 [2020-10-27 00:02:24,226 INFO L226 Difference]: Without dead ends: 3119 [2020-10-27 00:02:24,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-27 00:02:24,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3119 states. [2020-10-27 00:02:24,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3119 to 3103. [2020-10-27 00:02:24,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3103 states. [2020-10-27 00:02:24,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3103 states to 3103 states and 4163 transitions. [2020-10-27 00:02:24,353 INFO L78 Accepts]: Start accepts. Automaton has 3103 states and 4163 transitions. Word has length 147 [2020-10-27 00:02:24,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:24,354 INFO L481 AbstractCegarLoop]: Abstraction has 3103 states and 4163 transitions. [2020-10-27 00:02:24,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:02:24,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3103 states and 4163 transitions. [2020-10-27 00:02:24,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-27 00:02:24,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:24,360 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:02:24,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:02:24,361 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:24,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:24,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1318984764, now seen corresponding path program 1 times [2020-10-27 00:02:24,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:24,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680430484] [2020-10-27 00:02:24,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:24,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:24,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:24,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:25,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:25,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:26,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:28,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:28,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-27 00:02:28,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 00:02:28,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3928 [2020-10-27 00:02:28,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:28,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:02:28,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:02:28,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-27 00:02:28,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:28,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:28,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:28,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:28,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:28,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:28,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:02:28,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:28,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:28,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:28,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:02:28,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:28,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:28,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:28,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:28,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:28,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 00:02:28,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:02:28,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-27 00:02:28,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:28,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:28,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:28,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 00:02:28,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:02:28,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 00:02:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:28,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:28,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:28,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 00:02:28,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:28,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 00:02:28,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 00:02:28,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:29,190 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 203 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 00:02:29,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680430484] [2020-10-27 00:02:29,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:29,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:02:29,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144003711] [2020-10-27 00:02:29,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:02:29,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:29,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:02:29,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:02:29,193 INFO L87 Difference]: Start difference. First operand 3103 states and 4163 transitions. Second operand 8 states. [2020-10-27 00:02:34,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:34,384 INFO L93 Difference]: Finished difference Result 7290 states and 10188 transitions. [2020-10-27 00:02:34,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:02:34,385 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 245 [2020-10-27 00:02:34,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:34,410 INFO L225 Difference]: With dead ends: 7290 [2020-10-27 00:02:34,410 INFO L226 Difference]: Without dead ends: 4193 [2020-10-27 00:02:34,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:02:34,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4193 states. [2020-10-27 00:02:34,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4193 to 3808. [2020-10-27 00:02:34,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3808 states. [2020-10-27 00:02:34,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3808 states to 3808 states and 5131 transitions. [2020-10-27 00:02:34,569 INFO L78 Accepts]: Start accepts. Automaton has 3808 states and 5131 transitions. Word has length 245 [2020-10-27 00:02:34,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:34,570 INFO L481 AbstractCegarLoop]: Abstraction has 3808 states and 5131 transitions. [2020-10-27 00:02:34,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:02:34,570 INFO L276 IsEmpty]: Start isEmpty. Operand 3808 states and 5131 transitions. [2020-10-27 00:02:34,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-10-27 00:02:34,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:34,583 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, 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, 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] [2020-10-27 00:02:34,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:02:34,583 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:34,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:34,584 INFO L82 PathProgramCache]: Analyzing trace with hash -779030491, now seen corresponding path program 1 times [2020-10-27 00:02:34,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:34,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726494916] [2020-10-27 00:02:34,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:34,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:34,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:35,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:35,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:36,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:39,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:39,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 428 [2020-10-27 00:02:39,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:02:39,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4941 [2020-10-27 00:02:39,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:39,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:39,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 00:02:39,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:02:39,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:39,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:39,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:39,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:39,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:39,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:39,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 00:02:39,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:39,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:39,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:39,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:39,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:39,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:39,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:39,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:39,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 00:02:39,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:39,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 00:02:39,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:39,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:39,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:39,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 00:02:39,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:39,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 00:02:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:39,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:40,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:40,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 00:02:40,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:40,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-27 00:02:40,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:40,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:40,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:40,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-27 00:02:40,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:40,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-27 00:02:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:40,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:40,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:40,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:02:40,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:40,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 00:02:40,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:40,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:40,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:02:40,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:40,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:40,786 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 281 proven. 114 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-27 00:02:40,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726494916] [2020-10-27 00:02:40,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:40,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:02:40,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349347789] [2020-10-27 00:02:40,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:02:40,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:40,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:02:40,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:02:40,789 INFO L87 Difference]: Start difference. First operand 3808 states and 5131 transitions. Second operand 7 states. [2020-10-27 00:02:45,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:45,979 INFO L93 Difference]: Finished difference Result 9734 states and 13496 transitions. [2020-10-27 00:02:45,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:02:45,985 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 412 [2020-10-27 00:02:45,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:46,011 INFO L225 Difference]: With dead ends: 9734 [2020-10-27 00:02:46,011 INFO L226 Difference]: Without dead ends: 4854 [2020-10-27 00:02:46,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:02:46,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4854 states. [2020-10-27 00:02:46,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4854 to 4491. [2020-10-27 00:02:46,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4491 states. [2020-10-27 00:02:46,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4491 states to 4491 states and 5056 transitions. [2020-10-27 00:02:46,136 INFO L78 Accepts]: Start accepts. Automaton has 4491 states and 5056 transitions. Word has length 412 [2020-10-27 00:02:46,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:46,137 INFO L481 AbstractCegarLoop]: Abstraction has 4491 states and 5056 transitions. [2020-10-27 00:02:46,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:02:46,137 INFO L276 IsEmpty]: Start isEmpty. Operand 4491 states and 5056 transitions. [2020-10-27 00:02:46,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2020-10-27 00:02:46,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:46,158 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-10-27 00:02:46,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:02:46,158 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:46,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:46,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1950107501, now seen corresponding path program 1 times [2020-10-27 00:02:46,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:46,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608640912] [2020-10-27 00:02:46,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:46,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:46,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:46,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:46,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:51,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:51,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 652 [2020-10-27 00:02:51,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:02:51,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 00:02:51,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:51,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:02:51,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:02:51,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:02:51,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:51,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:51,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:51,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:51,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:51,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:51,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 00:02:51,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:51,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:51,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:51,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:02:51,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:51,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:51,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:51,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:51,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:02:51,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:51,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 00:02:51,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:51,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:51,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:51,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 00:02:51,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:02:51,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 00:02:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:51,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:51,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:51,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:02:51,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:51,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 00:02:51,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:51,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:51,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-27 00:02:51,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:51,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:51,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 00:02:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:51,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:51,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:51,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:02:51,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:51,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 00:02:51,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:51,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:51,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:02:51,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:51,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:51,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-27 00:02:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:51,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:51,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:51,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:02:51,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:51,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 00:02:51,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:51,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:51,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:02:51,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:51,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:51,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-27 00:02:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:51,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:52,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:52,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 00:02:52,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:52,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:02:52,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:52,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:52,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-27 00:02:52,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:52,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:52,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1371 backedges. 315 proven. 380 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2020-10-27 00:02:52,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608640912] [2020-10-27 00:02:52,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:52,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:02:52,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471700373] [2020-10-27 00:02:52,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:02:52,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:52,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:02:52,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:02:52,315 INFO L87 Difference]: Start difference. First operand 4491 states and 5056 transitions. Second operand 7 states. [2020-10-27 00:02:55,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:55,752 INFO L93 Difference]: Finished difference Result 9822 states and 11560 transitions. [2020-10-27 00:02:55,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:02:55,753 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 632 [2020-10-27 00:02:55,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:55,782 INFO L225 Difference]: With dead ends: 9822 [2020-10-27 00:02:55,782 INFO L226 Difference]: Without dead ends: 5337 [2020-10-27 00:02:55,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:02:55,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5337 states. [2020-10-27 00:02:55,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5337 to 5190. [2020-10-27 00:02:55,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5190 states. [2020-10-27 00:02:55,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5190 states to 5190 states and 5791 transitions. [2020-10-27 00:02:55,959 INFO L78 Accepts]: Start accepts. Automaton has 5190 states and 5791 transitions. Word has length 632 [2020-10-27 00:02:55,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:55,959 INFO L481 AbstractCegarLoop]: Abstraction has 5190 states and 5791 transitions. [2020-10-27 00:02:55,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:02:55,960 INFO L276 IsEmpty]: Start isEmpty. Operand 5190 states and 5791 transitions. [2020-10-27 00:02:55,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2020-10-27 00:02:55,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:55,995 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2020-10-27 00:02:55,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:02:55,996 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:55,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:55,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1157949027, now seen corresponding path program 1 times [2020-10-27 00:02:55,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:55,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778466618] [2020-10-27 00:02:55,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:56,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:56,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:56,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:01,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:01,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:01,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 791 [2020-10-27 00:03:01,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:03:01,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-27 00:03:01,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:01,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:01,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-27 00:03:01,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:03:01,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:01,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:01,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:01,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:01,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:01,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:01,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 00:03:01,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:01,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:01,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:01,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:01,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:01,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:03:01,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:01,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-27 00:03:01,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:01,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:01,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:01,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-27 00:03:01,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:03:01,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:03:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:01,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:01,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:01,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:03:01,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:01,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-27 00:03:01,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:03:01,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:02,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-27 00:03:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:02,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:02,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:02,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:03:02,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:02,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:03:02,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:02,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:02,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:03:02,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:02,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:02,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-27 00:03:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:02,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:02,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:02,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:03:02,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:02,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:03:02,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:02,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:02,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:03:02,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:02,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:02,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-27 00:03:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:02,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:02,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:02,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 00:03:02,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:02,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:03:02,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:02,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:02,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-27 00:03:02,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:02,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:02,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 453 proven. 325 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2020-10-27 00:03:02,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778466618] [2020-10-27 00:03:02,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:02,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:02,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486998987] [2020-10-27 00:03:02,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:02,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:02,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:02,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:02,642 INFO L87 Difference]: Start difference. First operand 5190 states and 5791 transitions. Second operand 7 states. [2020-10-27 00:03:06,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:06,699 INFO L93 Difference]: Finished difference Result 11419 states and 12895 transitions. [2020-10-27 00:03:06,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:03:06,700 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 771 [2020-10-27 00:03:06,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:06,726 INFO L225 Difference]: With dead ends: 11419 [2020-10-27 00:03:06,726 INFO L226 Difference]: Without dead ends: 6572 [2020-10-27 00:03:06,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:03:06,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6572 states. [2020-10-27 00:03:06,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6572 to 6558. [2020-10-27 00:03:06,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6558 states. [2020-10-27 00:03:06,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6558 states to 6558 states and 7241 transitions. [2020-10-27 00:03:06,877 INFO L78 Accepts]: Start accepts. Automaton has 6558 states and 7241 transitions. Word has length 771 [2020-10-27 00:03:06,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:06,878 INFO L481 AbstractCegarLoop]: Abstraction has 6558 states and 7241 transitions. [2020-10-27 00:03:06,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:06,878 INFO L276 IsEmpty]: Start isEmpty. Operand 6558 states and 7241 transitions. [2020-10-27 00:03:06,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 880 [2020-10-27 00:03:06,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:06,896 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:06,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:03:06,896 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:06,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:06,897 INFO L82 PathProgramCache]: Analyzing trace with hash -55916862, now seen corresponding path program 1 times [2020-10-27 00:03:06,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:06,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807525326] [2020-10-27 00:03:06,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:07,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:07,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:07,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:12,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:12,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:12,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 901 [2020-10-27 00:03:12,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:03:12,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5124 [2020-10-27 00:03:12,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:12,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:12,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-27 00:03:12,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:03:12,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:12,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:12,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:12,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:12,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:12,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:12,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:03:12,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:12,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:12,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:12,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:12,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:12,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:12,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:12,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:12,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:03:12,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:12,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 00:03:12,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:12,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:12,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:12,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:12,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:12,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:03:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:12,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:12,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:12,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:03:12,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:12,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:03:12,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:12,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:12,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:12,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 00:03:12,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:12,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:03:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:12,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:12,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:12,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:03:12,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:12,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 00:03:12,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:12,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:12,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:12,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:03:12,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:12,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-27 00:03:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:12,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:12,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:12,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:03:12,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:12,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:03:12,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:12,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:12,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:03:12,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:12,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:12,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 00:03:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:12,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:12,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:12,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:03:12,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:12,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:03:12,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:12,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:12,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:03:12,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:12,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:12,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2020-10-27 00:03:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:13,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:13,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:13,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 00:03:13,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:13,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:03:13,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:13,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:13,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-27 00:03:13,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:13,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:13,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1995 backedges. 630 proven. 325 refuted. 0 times theorem prover too weak. 1040 trivial. 0 not checked. [2020-10-27 00:03:13,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807525326] [2020-10-27 00:03:13,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:13,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:03:13,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843208872] [2020-10-27 00:03:13,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:03:13,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:13,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:03:13,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:03:13,516 INFO L87 Difference]: Start difference. First operand 6558 states and 7241 transitions. Second operand 8 states. [2020-10-27 00:03:17,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:17,277 INFO L93 Difference]: Finished difference Result 12444 states and 13809 transitions. [2020-10-27 00:03:17,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:03:17,278 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 879 [2020-10-27 00:03:17,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:17,315 INFO L225 Difference]: With dead ends: 12444 [2020-10-27 00:03:17,315 INFO L226 Difference]: Without dead ends: 6575 [2020-10-27 00:03:17,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:03:17,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6575 states. [2020-10-27 00:03:17,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6575 to 6563. [2020-10-27 00:03:17,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6563 states. [2020-10-27 00:03:17,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6563 states to 6563 states and 7166 transitions. [2020-10-27 00:03:17,497 INFO L78 Accepts]: Start accepts. Automaton has 6563 states and 7166 transitions. Word has length 879 [2020-10-27 00:03:17,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:17,498 INFO L481 AbstractCegarLoop]: Abstraction has 6563 states and 7166 transitions. [2020-10-27 00:03:17,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:03:17,499 INFO L276 IsEmpty]: Start isEmpty. Operand 6563 states and 7166 transitions. [2020-10-27 00:03:17,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1096 [2020-10-27 00:03:17,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:17,533 INFO L422 BasicCegarLoop]: trace histogram [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, 7, 7, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:17,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:03:17,534 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:17,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:17,535 INFO L82 PathProgramCache]: Analyzing trace with hash -738135904, now seen corresponding path program 1 times [2020-10-27 00:03:17,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:17,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654329900] [2020-10-27 00:03:17,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:17,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:18,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:18,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:18,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:22,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:22,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:22,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1117 [2020-10-27 00:03:22,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:03:22,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-27 00:03:22,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:22,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:03:22,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:03:22,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-27 00:03:22,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:23,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:23,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:23,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:23,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:23,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:23,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 00:03:23,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:23,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:23,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:23,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:03:23,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:23,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:23,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:23,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:23,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:23,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:03:23,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:03:23,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-27 00:03:23,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:23,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:23,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:23,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-27 00:03:23,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:23,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:03:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:24,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:24,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:24,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 00:03:24,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:24,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-27 00:03:24,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:24,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:24,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:24,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-27 00:03:24,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:24,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-27 00:03:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:24,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:24,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:24,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:03:24,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:24,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 00:03:24,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:24,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:24,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:03:24,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:24,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:24,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-27 00:03:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:24,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:24,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:24,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:03:24,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:24,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 00:03:24,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:24,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:24,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:03:24,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:24,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:24,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2020-10-27 00:03:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:24,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:24,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:24,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:03:24,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:24,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 00:03:24,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:24,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:24,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 00:03:24,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:24,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:24,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 961 [2020-10-27 00:03:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:24,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:24,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:24,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:03:24,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:24,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 00:03:24,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:24,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:24,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:03:24,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:24,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:27,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2095 backedges. 395 proven. 1208 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2020-10-27 00:03:27,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654329900] [2020-10-27 00:03:27,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:27,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:03:27,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461282761] [2020-10-27 00:03:27,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:03:27,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:27,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:03:27,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:03:27,380 INFO L87 Difference]: Start difference. First operand 6563 states and 7166 transitions. Second operand 8 states. [2020-10-27 00:03:30,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:30,765 INFO L93 Difference]: Finished difference Result 12462 states and 13665 transitions. [2020-10-27 00:03:30,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 00:03:30,767 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1095 [2020-10-27 00:03:30,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:30,786 INFO L225 Difference]: With dead ends: 12462 [2020-10-27 00:03:30,787 INFO L226 Difference]: Without dead ends: 6588 [2020-10-27 00:03:30,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-27 00:03:30,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6588 states. [2020-10-27 00:03:30,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6588 to 6568. [2020-10-27 00:03:30,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6568 states. [2020-10-27 00:03:30,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6568 states to 6568 states and 7169 transitions. [2020-10-27 00:03:30,921 INFO L78 Accepts]: Start accepts. Automaton has 6568 states and 7169 transitions. Word has length 1095 [2020-10-27 00:03:30,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:30,922 INFO L481 AbstractCegarLoop]: Abstraction has 6568 states and 7169 transitions. [2020-10-27 00:03:30,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:03:30,922 INFO L276 IsEmpty]: Start isEmpty. Operand 6568 states and 7169 transitions. [2020-10-27 00:03:30,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1130 [2020-10-27 00:03:30,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:30,947 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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:03:30,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:03:30,947 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:30,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:30,948 INFO L82 PathProgramCache]: Analyzing trace with hash -2104275469, now seen corresponding path program 1 times [2020-10-27 00:03:30,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:30,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063731439] [2020-10-27 00:03:30,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:31,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:31,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:31,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:31,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:36,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:36,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1153 [2020-10-27 00:03:36,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:03:36,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 00:03:36,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:36,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:36,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-27 00:03:36,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-27 00:03:36,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:36,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:36,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:36,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:36,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:36,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:36,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:03:36,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:36,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:36,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:36,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:36,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:36,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:36,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:36,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:36,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:03:36,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:36,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 00:03:36,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:36,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:36,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:36,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-27 00:03:36,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:36,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:03:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:36,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:36,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:36,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:03:36,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:36,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-27 00:03:36,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:36,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:36,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:36,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-27 00:03:36,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:36,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-27 00:03:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:37,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:37,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:37,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:03:37,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:37,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:03:37,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:37,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:37,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-27 00:03:37,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:37,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:37,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-27 00:03:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:37,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:37,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:37,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:03:37,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:37,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:03:37,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:37,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:37,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:03:37,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:37,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:37,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-27 00:03:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:37,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:37,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:37,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:03:37,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:37,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:03:37,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:37,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:37,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:03:37,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:37,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:37,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 722 [2020-10-27 00:03:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:37,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:37,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:37,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:03:37,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:37,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 00:03:37,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:37,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:37,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 00:03:37,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:37,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:37,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 995 [2020-10-27 00:03:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:37,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:37,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:37,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:03:37,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:37,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:03:37,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:37,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:37,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:03:37,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:37,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2620 backedges. 620 proven. 533 refuted. 0 times theorem prover too weak. 1467 trivial. 0 not checked. [2020-10-27 00:03:38,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063731439] [2020-10-27 00:03:38,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:38,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:38,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766312058] [2020-10-27 00:03:38,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:38,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:38,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:38,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:38,277 INFO L87 Difference]: Start difference. First operand 6568 states and 7169 transitions. Second operand 7 states. [2020-10-27 00:03:41,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:41,798 INFO L93 Difference]: Finished difference Result 13833 states and 15209 transitions. [2020-10-27 00:03:41,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:03:41,799 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1129 [2020-10-27 00:03:41,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:41,820 INFO L225 Difference]: With dead ends: 13833 [2020-10-27 00:03:41,821 INFO L226 Difference]: Without dead ends: 7947 [2020-10-27 00:03:41,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:03:41,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7947 states. [2020-10-27 00:03:41,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7947 to 7933. [2020-10-27 00:03:41,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7933 states. [2020-10-27 00:03:41,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7933 states to 7933 states and 8623 transitions. [2020-10-27 00:03:41,978 INFO L78 Accepts]: Start accepts. Automaton has 7933 states and 8623 transitions. Word has length 1129 [2020-10-27 00:03:41,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:41,979 INFO L481 AbstractCegarLoop]: Abstraction has 7933 states and 8623 transitions. [2020-10-27 00:03:41,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:41,979 INFO L276 IsEmpty]: Start isEmpty. Operand 7933 states and 8623 transitions. [2020-10-27 00:03:42,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1237 [2020-10-27 00:03:42,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:42,006 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, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:42,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:03:42,007 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:42,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:42,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1888777532, now seen corresponding path program 1 times [2020-10-27 00:03:42,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:42,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350055187] [2020-10-27 00:03:42,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:42,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:42,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:42,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:44,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:46,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:47,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:47,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1262 [2020-10-27 00:03:47,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:03:47,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 00:03:47,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:47,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:47,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-27 00:03:47,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:03:47,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:47,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:47,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:47,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:47,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:47,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:47,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:03:47,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:47,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:47,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:47,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:47,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:47,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:47,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:47,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:47,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:03:47,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:47,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:03:47,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:47,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:47,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:47,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:47,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:47,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:03:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:47,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:47,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:47,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:03:47,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:47,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 00:03:47,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:47,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:47,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:47,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 00:03:47,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:47,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 00:03:47,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:47,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:47,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:47,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:03:47,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:47,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 00:03:47,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:47,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:47,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:47,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:03:47,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:48,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 00:03:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:48,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:48,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:48,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:03:48,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:48,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:03:48,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:48,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:48,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:03:48,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:48,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:48,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-27 00:03:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:48,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:48,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:48,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:03:48,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:48,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 00:03:48,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:48,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:48,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:03:48,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:48,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:48,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 783 [2020-10-27 00:03:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:48,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:48,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:48,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:03:48,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:48,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 00:03:48,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:48,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:48,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:03:48,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:48,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:48,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 925 [2020-10-27 00:03:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:48,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:48,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:48,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:03:48,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:48,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 00:03:48,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:48,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:48,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:03:48,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:48,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:48,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1035 [2020-10-27 00:03:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:48,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:48,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:48,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:03:48,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:48,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:03:48,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:48,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:48,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:03:48,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:48,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3659 backedges. 801 proven. 539 refuted. 0 times theorem prover too weak. 2319 trivial. 0 not checked. [2020-10-27 00:03:49,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350055187] [2020-10-27 00:03:49,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:49,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:49,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137852016] [2020-10-27 00:03:49,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:49,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:49,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:49,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:49,364 INFO L87 Difference]: Start difference. First operand 7933 states and 8623 transitions. Second operand 7 states. [2020-10-27 00:03:53,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:53,290 INFO L93 Difference]: Finished difference Result 15533 states and 16948 transitions. [2020-10-27 00:03:53,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:03:53,300 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1236 [2020-10-27 00:03:53,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:53,330 INFO L225 Difference]: With dead ends: 15533 [2020-10-27 00:03:53,330 INFO L226 Difference]: Without dead ends: 8284 [2020-10-27 00:03:53,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:03:53,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8284 states. [2020-10-27 00:03:53,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8284 to 8272. [2020-10-27 00:03:53,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8272 states. [2020-10-27 00:03:53,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8272 states to 8272 states and 8975 transitions. [2020-10-27 00:03:53,485 INFO L78 Accepts]: Start accepts. Automaton has 8272 states and 8975 transitions. Word has length 1236 [2020-10-27 00:03:53,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:53,486 INFO L481 AbstractCegarLoop]: Abstraction has 8272 states and 8975 transitions. [2020-10-27 00:03:53,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:53,486 INFO L276 IsEmpty]: Start isEmpty. Operand 8272 states and 8975 transitions. [2020-10-27 00:03:53,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1239 [2020-10-27 00:03:53,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:53,513 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, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:53,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:03:53,513 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:53,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:53,514 INFO L82 PathProgramCache]: Analyzing trace with hash -582392456, now seen corresponding path program 1 times [2020-10-27 00:03:53,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:53,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112286969] [2020-10-27 00:03:53,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:53,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:54,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:54,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:54,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:58,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:58,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1264 [2020-10-27 00:03:58,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:03:58,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-27 00:03:58,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:58,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:58,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-27 00:03:58,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:03:58,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:58,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:58,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:58,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:58,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:58,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:58,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:03:58,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:58,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:58,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:58,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:58,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:58,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:58,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:58,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:59,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:03:59,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:59,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 00:03:59,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:59,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:59,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:59,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:59,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:59,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:03:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:59,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:59,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:59,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 00:03:59,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:59,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-27 00:03:59,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:59,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:59,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:59,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-27 00:03:59,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:59,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-27 00:03:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:59,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:59,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:59,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:03:59,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:59,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 00:03:59,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:59,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:59,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:59,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:03:59,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:59,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-27 00:03:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:59,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:59,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:59,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:03:59,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:59,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 00:03:59,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:59,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:59,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:03:59,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:59,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:59,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2020-10-27 00:03:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:59,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:59,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:59,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:03:59,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:59,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 00:03:59,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:59,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:59,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:03:59,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:59,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:59,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 785 [2020-10-27 00:03:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:59,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:59,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:59,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:03:59,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:59,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 00:03:59,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:59,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:59,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:03:59,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:59,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:59,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 927 [2020-10-27 00:03:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:59,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:59,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:59,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:03:59,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:59,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 00:03:59,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:59,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:59,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:03:59,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:59,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:59,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1037 [2020-10-27 00:03:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:59,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:59,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:59,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:03:59,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:59,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:03:59,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:59,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:59,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:03:59,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:59,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:00,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 801 proven. 539 refuted. 0 times theorem prover too weak. 2321 trivial. 0 not checked. [2020-10-27 00:04:00,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112286969] [2020-10-27 00:04:00,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:00,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:04:00,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988933597] [2020-10-27 00:04:00,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:04:00,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:00,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:04:00,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:04:00,920 INFO L87 Difference]: Start difference. First operand 8272 states and 8975 transitions. Second operand 7 states. [2020-10-27 00:04:05,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:05,114 INFO L93 Difference]: Finished difference Result 17231 states and 18916 transitions. [2020-10-27 00:04:05,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:04:05,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1238 [2020-10-27 00:04:05,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:05,138 INFO L225 Difference]: With dead ends: 17231 [2020-10-27 00:04:05,139 INFO L226 Difference]: Without dead ends: 9643 [2020-10-27 00:04:05,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:04:05,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9643 states. [2020-10-27 00:04:05,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9643 to 9639. [2020-10-27 00:04:05,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9639 states. [2020-10-27 00:04:05,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9639 states to 9639 states and 10397 transitions. [2020-10-27 00:04:05,308 INFO L78 Accepts]: Start accepts. Automaton has 9639 states and 10397 transitions. Word has length 1238 [2020-10-27 00:04:05,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:05,310 INFO L481 AbstractCegarLoop]: Abstraction has 9639 states and 10397 transitions. [2020-10-27 00:04:05,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:04:05,310 INFO L276 IsEmpty]: Start isEmpty. Operand 9639 states and 10397 transitions. [2020-10-27 00:04:05,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1289 [2020-10-27 00:04:05,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:05,457 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, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:04:05,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:04:05,457 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:05,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:05,458 INFO L82 PathProgramCache]: Analyzing trace with hash -801900040, now seen corresponding path program 1 times [2020-10-27 00:04:05,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:05,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616639311] [2020-10-27 00:04:05,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:05,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:06,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:06,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:06,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:10,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:10,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1314 [2020-10-27 00:04:10,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:04:10,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 00:04:10,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:10,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:10,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-27 00:04:10,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-27 00:04:10,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:10,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:10,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:10,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:10,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:10,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:10,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:04:10,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:10,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:10,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:10,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:10,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:10,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:10,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:10,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:10,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:04:10,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:10,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:04:10,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:10,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:10,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:10,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:10,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:11,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:04:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:11,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:11,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:11,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:04:11,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:11,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:04:11,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:11,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:11,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:11,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 00:04:11,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:11,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:04:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:11,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:11,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:11,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 00:04:11,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:11,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-27 00:04:11,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:11,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:11,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:11,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-27 00:04:11,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:11,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2020-10-27 00:04:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:11,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:11,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:11,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:04:11,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:11,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:04:11,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:11,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:11,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 00:04:11,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:11,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:11,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 674 [2020-10-27 00:04:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:11,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:11,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:11,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:04:11,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:11,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 00:04:11,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:11,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:11,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:04:11,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:11,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:11,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 789 [2020-10-27 00:04:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:11,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:11,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:11,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 00:04:11,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:11,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 00:04:11,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:11,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:11,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-27 00:04:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:11,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:12,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 977 [2020-10-27 00:04:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:12,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:12,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:12,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:04:12,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:12,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:04:12,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:12,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:12,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:04:12,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:12,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:12,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1087 [2020-10-27 00:04:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:12,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:12,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:12,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:04:12,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:12,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 00:04:12,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:04:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:12,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:13,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3641 backedges. 890 proven. 608 refuted. 0 times theorem prover too weak. 2143 trivial. 0 not checked. [2020-10-27 00:04:13,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616639311] [2020-10-27 00:04:13,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:13,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:04:13,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020781747] [2020-10-27 00:04:13,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:04:13,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:13,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:04:13,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:04:13,663 INFO L87 Difference]: Start difference. First operand 9639 states and 10397 transitions. Second operand 7 states. [2020-10-27 00:04:16,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:16,937 INFO L93 Difference]: Finished difference Result 19611 states and 21190 transitions. [2020-10-27 00:04:16,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:04:16,938 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1288 [2020-10-27 00:04:16,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:16,965 INFO L225 Difference]: With dead ends: 19611 [2020-10-27 00:04:16,965 INFO L226 Difference]: Without dead ends: 10656 [2020-10-27 00:04:16,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:04:16,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10656 states. [2020-10-27 00:04:17,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10656 to 10319. [2020-10-27 00:04:17,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10319 states. [2020-10-27 00:04:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10319 states to 10319 states and 11130 transitions. [2020-10-27 00:04:17,138 INFO L78 Accepts]: Start accepts. Automaton has 10319 states and 11130 transitions. Word has length 1288 [2020-10-27 00:04:17,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:17,139 INFO L481 AbstractCegarLoop]: Abstraction has 10319 states and 11130 transitions. [2020-10-27 00:04:17,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:04:17,139 INFO L276 IsEmpty]: Start isEmpty. Operand 10319 states and 11130 transitions. [2020-10-27 00:04:17,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1331 [2020-10-27 00:04:17,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:17,178 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, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:04:17,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 00:04:17,178 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:17,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:17,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1747122091, now seen corresponding path program 1 times [2020-10-27 00:04:17,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:17,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404396370] [2020-10-27 00:04:17,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:17,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:17,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:18,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:22,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:22,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1358 [2020-10-27 00:04:22,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:04:22,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 00:04:22,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:22,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:22,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-27 00:04:22,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 00:04:22,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:22,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:22,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:22,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:22,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:22,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:22,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:04:22,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:22,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:22,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:22,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:22,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:22,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:22,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:22,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:22,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:04:22,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:22,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 00:04:22,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:22,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:22,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:22,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:22,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:22,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:04:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:22,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:22,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:22,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:04:22,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:22,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 00:04:22,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:22,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:22,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:04:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:22,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:22,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:22,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:04:22,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:22,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 00:04:22,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:22,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:22,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:22,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:22,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:22,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:04:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:22,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:22,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:22,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:04:22,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:22,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:04:22,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:22,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:22,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:22,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:22,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:22,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:04:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:22,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:22,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:22,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:04:22,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:22,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 00:04:22,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:22,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:22,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:22,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 00:04:22,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:23,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-27 00:04:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:23,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:23,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:23,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:04:23,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:23,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 00:04:23,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:23,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:23,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:23,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 00:04:23,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:23,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-10-27 00:04:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:23,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:23,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:23,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 00:04:23,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:23,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 00:04:23,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-27 00:04:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:23,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:23,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1019 [2020-10-27 00:04:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:23,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:23,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:23,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:04:23,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:23,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-27 00:04:23,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:23,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:23,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:04:23,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:23,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:23,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1129 [2020-10-27 00:04:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:23,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:23,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:23,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:04:23,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:23,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 00:04:23,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:23,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:23,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:04:23,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:23,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:24,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4504 backedges. 1147 proven. 333 refuted. 0 times theorem prover too weak. 3024 trivial. 0 not checked. [2020-10-27 00:04:24,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404396370] [2020-10-27 00:04:24,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:24,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:04:24,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124198164] [2020-10-27 00:04:24,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:04:24,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:24,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:04:24,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:04:24,490 INFO L87 Difference]: Start difference. First operand 10319 states and 11130 transitions. Second operand 7 states. [2020-10-27 00:04:30,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:30,113 INFO L93 Difference]: Finished difference Result 23352 states and 25419 transitions. [2020-10-27 00:04:30,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:04:30,114 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1330 [2020-10-27 00:04:30,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:30,152 INFO L225 Difference]: With dead ends: 23352 [2020-10-27 00:04:30,152 INFO L226 Difference]: Without dead ends: 13717 [2020-10-27 00:04:30,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:04:30,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13717 states. [2020-10-27 00:04:30,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13717 to 13713. [2020-10-27 00:04:30,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13713 states. [2020-10-27 00:04:30,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13713 states to 13713 states and 14769 transitions. [2020-10-27 00:04:30,383 INFO L78 Accepts]: Start accepts. Automaton has 13713 states and 14769 transitions. Word has length 1330 [2020-10-27 00:04:30,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:30,384 INFO L481 AbstractCegarLoop]: Abstraction has 13713 states and 14769 transitions. [2020-10-27 00:04:30,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:04:30,385 INFO L276 IsEmpty]: Start isEmpty. Operand 13713 states and 14769 transitions. [2020-10-27 00:04:30,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1361 [2020-10-27 00:04:30,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:30,423 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, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:04:30,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 00:04:30,424 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:30,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:30,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1498872202, now seen corresponding path program 1 times [2020-10-27 00:04:30,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:30,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113688656] [2020-10-27 00:04:30,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:30,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:31,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:32,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:35,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:35,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1386 [2020-10-27 00:04:35,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:04:35,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-27 00:04:35,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:35,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:35,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-27 00:04:35,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 00:04:35,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:36,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:36,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:36,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:36,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:36,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:36,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:36,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:04:36,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:36,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:36,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:36,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:36,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:36,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:36,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:36,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:36,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:04:36,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:36,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 00:04:36,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:36,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:36,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:36,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:36,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:36,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:04:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:36,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:36,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:36,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:04:36,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:36,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 00:04:36,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:36,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:36,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:36,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:36,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:36,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:04:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:36,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:36,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:36,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:04:36,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:36,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:04:36,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:36,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:36,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:36,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:36,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:36,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:04:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:36,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:36,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:36,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:04:36,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:36,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:04:36,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:36,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:36,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:36,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:36,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:36,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:04:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:36,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:36,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:36,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:04:36,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:36,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 00:04:36,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:36,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:36,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:36,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 00:04:36,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:36,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-27 00:04:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:36,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:37,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:37,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:04:37,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:37,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-27 00:04:37,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:37,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:37,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:37,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 00:04:37,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:37,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1114 [2020-10-27 00:04:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:37,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:37,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:37,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 00:04:37,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:37,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 00:04:37,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:37,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:37,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 00:04:37,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:37,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:37,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1226 [2020-10-27 00:04:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:37,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:37,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:37,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:04:37,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:37,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 00:04:37,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:37,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:37,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:04:37,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:37,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3800 backedges. 1382 proven. 179 refuted. 0 times theorem prover too weak. 2239 trivial. 0 not checked. [2020-10-27 00:04:38,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113688656] [2020-10-27 00:04:38,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:38,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:04:38,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481374125] [2020-10-27 00:04:38,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:04:38,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:38,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:04:38,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:04:38,897 INFO L87 Difference]: Start difference. First operand 13713 states and 14769 transitions. Second operand 7 states. [2020-10-27 00:04:42,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:42,611 INFO L93 Difference]: Finished difference Result 26752 states and 28863 transitions. [2020-10-27 00:04:42,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:04:42,612 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1360 [2020-10-27 00:04:42,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:42,643 INFO L225 Difference]: With dead ends: 26752 [2020-10-27 00:04:42,643 INFO L226 Difference]: Without dead ends: 13723 [2020-10-27 00:04:42,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:04:42,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13723 states. [2020-10-27 00:04:42,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13723 to 13713. [2020-10-27 00:04:42,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13713 states. [2020-10-27 00:04:42,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13713 states to 13713 states and 14761 transitions. [2020-10-27 00:04:42,865 INFO L78 Accepts]: Start accepts. Automaton has 13713 states and 14761 transitions. Word has length 1360 [2020-10-27 00:04:42,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:42,867 INFO L481 AbstractCegarLoop]: Abstraction has 13713 states and 14761 transitions. [2020-10-27 00:04:42,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:04:42,867 INFO L276 IsEmpty]: Start isEmpty. Operand 13713 states and 14761 transitions. [2020-10-27 00:04:42,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1413 [2020-10-27 00:04:42,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:42,897 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, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:04:42,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 00:04:42,898 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:42,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:42,899 INFO L82 PathProgramCache]: Analyzing trace with hash -824233127, now seen corresponding path program 1 times [2020-10-27 00:04:42,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:42,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394466741] [2020-10-27 00:04:42,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:43,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:43,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:44,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:48,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:48,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1440 [2020-10-27 00:04:48,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:04:48,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-27 00:04:48,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:48,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:48,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 654 [2020-10-27 00:04:48,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-27 00:04:48,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:48,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:48,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:48,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:48,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:48,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:48,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:04:48,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:48,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:48,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:48,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:48,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:48,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:48,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:48,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:48,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:04:48,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:48,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 00:04:48,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:48,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:48,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:04:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:48,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:48,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:48,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:04:48,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:48,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:04:48,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:48,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:48,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:48,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:48,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:48,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:04:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:48,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:48,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:48,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:04:48,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:48,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:04:48,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:48,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:48,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:48,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:48,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:48,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:04:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:48,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:48,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:48,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:04:48,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:48,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 00:04:48,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:48,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:48,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:48,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 00:04:48,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:48,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:04:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:48,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:48,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:48,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 00:04:48,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:48,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-27 00:04:48,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-27 00:04:48,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:49,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 778 [2020-10-27 00:04:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:49,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:49,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:49,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:04:49,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:49,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:04:49,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:49,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:49,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:04:49,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:49,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:49,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 893 [2020-10-27 00:04:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:49,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:49,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:49,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:04:49,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:49,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 00:04:49,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:49,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:49,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 00:04:49,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:49,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:49,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1166 [2020-10-27 00:04:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:49,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:49,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:49,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 00:04:49,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:49,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 00:04:49,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:49,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:49,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 00:04:49,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:49,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:49,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1278 [2020-10-27 00:04:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:49,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:49,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:49,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:04:49,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:49,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 00:04:49,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:49,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:49,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:04:49,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:49,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:50,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4565 backedges. 1127 proven. 420 refuted. 0 times theorem prover too weak. 3018 trivial. 0 not checked. [2020-10-27 00:04:50,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394466741] [2020-10-27 00:04:50,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:50,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:04:50,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48179443] [2020-10-27 00:04:50,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:04:50,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:50,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:04:50,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:04:50,468 INFO L87 Difference]: Start difference. First operand 13713 states and 14761 transitions. Second operand 7 states. [2020-10-27 00:04:54,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:54,653 INFO L93 Difference]: Finished difference Result 26822 states and 29186 transitions. [2020-10-27 00:04:54,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:04:54,654 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1412 [2020-10-27 00:04:54,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:54,683 INFO L225 Difference]: With dead ends: 26822 [2020-10-27 00:04:54,683 INFO L226 Difference]: Without dead ends: 13793 [2020-10-27 00:04:54,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:04:54,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13793 states. [2020-10-27 00:04:54,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13793 to 13709. [2020-10-27 00:04:54,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13709 states. [2020-10-27 00:04:54,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13709 states to 13709 states and 14512 transitions. [2020-10-27 00:04:54,899 INFO L78 Accepts]: Start accepts. Automaton has 13709 states and 14512 transitions. Word has length 1412 [2020-10-27 00:04:54,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:54,900 INFO L481 AbstractCegarLoop]: Abstraction has 13709 states and 14512 transitions. [2020-10-27 00:04:54,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:04:54,900 INFO L276 IsEmpty]: Start isEmpty. Operand 13709 states and 14512 transitions. [2020-10-27 00:04:54,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1458 [2020-10-27 00:04:54,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:54,929 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 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] [2020-10-27 00:04:54,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 00:04:54,929 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:54,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:54,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1292461569, now seen corresponding path program 1 times [2020-10-27 00:04:54,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:54,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285407514] [2020-10-27 00:04:54,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:55,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:55,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:55,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:57,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:00,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:00,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1489 [2020-10-27 00:05:00,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:05:00,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-27 00:05:00,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:00,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:00,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 654 [2020-10-27 00:05:00,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:05:00,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:00,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:05:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:00,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:00,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:00,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:05:00,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:00,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:05:00,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:00,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:00,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:00,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:00,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:00,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:05:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:00,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:00,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:00,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:05:00,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:00,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 00:05:00,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:00,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:00,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:00,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:00,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:00,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:05:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:00,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:00,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:00,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:05:00,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:00,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:05:00,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:00,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:00,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:00,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:00,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:00,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:05:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:00,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:00,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:00,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:05:00,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:00,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:05:00,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:00,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:00,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:00,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:00,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:00,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:05:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:00,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:00,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:00,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:05:00,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:00,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 00:05:00,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:00,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:05:00,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:00,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 00:05:00,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:00,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:05:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:00,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:00,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:00,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:05:00,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:00,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 00:05:00,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:00,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:00,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:00,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 00:05:00,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:01,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2020-10-27 00:05:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:01,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:01,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:01,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:05:01,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:01,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 00:05:01,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:01,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:01,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 00:05:01,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:01,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:01,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-10-27 00:05:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:01,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:01,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:01,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:05:01,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:01,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 00:05:01,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:01,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:01,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:05:01,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:01,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:01,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1001 [2020-10-27 00:05:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:01,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:01,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:01,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 00:05:01,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:01,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 00:05:01,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:01,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:01,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 00:05:01,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:01,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:01,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1075 [2020-10-27 00:05:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:01,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:01,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:01,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:05:01,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:01,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:05:01,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:01,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:01,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:05:01,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:01,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:01,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1185 [2020-10-27 00:05:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:01,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:01,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:01,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:05:01,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:01,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 00:05:01,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:01,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:01,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:05:01,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:01,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:01,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1323 [2020-10-27 00:05:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:01,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:01,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:01,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:05:01,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:01,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 00:05:01,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:05:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:01,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:02,994 INFO L134 CoverageAnalysis]: Checked inductivity of 6047 backedges. 1068 proven. 398 refuted. 0 times theorem prover too weak. 4581 trivial. 0 not checked. [2020-10-27 00:05:02,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285407514] [2020-10-27 00:05:02,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:05:02,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:05:02,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183460902] [2020-10-27 00:05:02,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:05:02,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:05:02,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:05:02,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:05:02,998 INFO L87 Difference]: Start difference. First operand 13709 states and 14512 transitions. Second operand 7 states. [2020-10-27 00:05:06,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:05:06,735 INFO L93 Difference]: Finished difference Result 28090 states and 29756 transitions. [2020-10-27 00:05:06,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:05:06,736 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1457 [2020-10-27 00:05:06,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:05:06,763 INFO L225 Difference]: With dead ends: 28090 [2020-10-27 00:05:06,763 INFO L226 Difference]: Without dead ends: 15065 [2020-10-27 00:05:06,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:05:06,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15065 states. [2020-10-27 00:05:06,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15065 to 14724. [2020-10-27 00:05:06,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14724 states. [2020-10-27 00:05:07,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14724 states to 14724 states and 15581 transitions. [2020-10-27 00:05:07,002 INFO L78 Accepts]: Start accepts. Automaton has 14724 states and 15581 transitions. Word has length 1457 [2020-10-27 00:05:07,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:05:07,003 INFO L481 AbstractCegarLoop]: Abstraction has 14724 states and 15581 transitions. [2020-10-27 00:05:07,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:05:07,003 INFO L276 IsEmpty]: Start isEmpty. Operand 14724 states and 15581 transitions. [2020-10-27 00:05:07,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1475 [2020-10-27 00:05:07,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:05:07,039 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, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:05:07,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 00:05:07,039 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:05:07,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:05:07,040 INFO L82 PathProgramCache]: Analyzing trace with hash -282742813, now seen corresponding path program 1 times [2020-10-27 00:05:07,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:05:07,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468770140] [2020-10-27 00:05:07,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:05:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:07,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:07,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:08,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:12,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:12,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1502 [2020-10-27 00:05:12,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:05:12,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5238 [2020-10-27 00:05:12,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:12,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:12,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 797 [2020-10-27 00:05:12,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 00:05:12,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:12,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:05:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:12,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:13,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:13,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:05:13,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:13,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:05:13,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:13,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:13,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:05:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:13,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:13,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:13,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:05:13,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:13,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 00:05:13,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:13,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:13,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:13,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:13,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:13,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:05:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:13,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:13,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:13,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:05:13,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:13,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 00:05:13,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:13,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:13,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 00:05:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:13,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:13,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:13,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-27 00:05:13,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:13,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 00:05:13,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:13,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:13,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:13,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:13,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:13,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-27 00:05:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:13,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:13,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:13,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 00:05:13,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:13,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 00:05:13,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:13,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:05:13,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:13,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-27 00:05:13,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:13,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 789 [2020-10-27 00:05:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:13,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:13,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:13,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:05:13,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:13,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 00:05:13,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:13,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:13,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:13,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 00:05:13,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:13,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 904 [2020-10-27 00:05:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:13,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:13,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:13,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 00:05:13,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:13,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 00:05:13,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:13,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:13,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-27 00:05:13,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:13,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:13,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1092 [2020-10-27 00:05:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:13,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:13,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:13,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:05:13,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:13,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 00:05:13,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:13,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:13,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:05:13,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:13,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:13,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1202 [2020-10-27 00:05:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:13,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:13,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:13,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:05:13,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:13,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:05:13,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:13,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:13,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:05:13,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:13,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:14,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1340 [2020-10-27 00:05:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:14,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:14,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:14,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:05:14,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:14,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 00:05:14,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:14,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:14,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:05:14,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:14,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:15,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4967 backedges. 1094 proven. 401 refuted. 0 times theorem prover too weak. 3472 trivial. 0 not checked. [2020-10-27 00:05:15,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468770140] [2020-10-27 00:05:15,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:05:15,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:05:15,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534825024] [2020-10-27 00:05:15,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:05:15,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:05:15,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:05:15,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:05:15,186 INFO L87 Difference]: Start difference. First operand 14724 states and 15581 transitions. Second operand 7 states. [2020-10-27 00:05:19,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:05:19,616 INFO L93 Difference]: Finished difference Result 32502 states and 34490 transitions. [2020-10-27 00:05:19,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:05:19,617 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1474 [2020-10-27 00:05:19,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:05:19,652 INFO L225 Difference]: With dead ends: 32502 [2020-10-27 00:05:19,653 INFO L226 Difference]: Without dead ends: 18462 [2020-10-27 00:05:19,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:05:19,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18462 states. [2020-10-27 00:05:19,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18462 to 18117. [2020-10-27 00:05:19,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18117 states. [2020-10-27 00:05:19,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18117 states to 18117 states and 19132 transitions. [2020-10-27 00:05:19,960 INFO L78 Accepts]: Start accepts. Automaton has 18117 states and 19132 transitions. Word has length 1474 [2020-10-27 00:05:19,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:05:19,961 INFO L481 AbstractCegarLoop]: Abstraction has 18117 states and 19132 transitions. [2020-10-27 00:05:19,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:05:19,961 INFO L276 IsEmpty]: Start isEmpty. Operand 18117 states and 19132 transitions. [2020-10-27 00:05:19,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1495 [2020-10-27 00:05:19,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:05:20,001 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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, 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, 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] [2020-10-27 00:05:20,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 00:05:20,001 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:05:20,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:05:20,002 INFO L82 PathProgramCache]: Analyzing trace with hash 469515372, now seen corresponding path program 1 times [2020-10-27 00:05:20,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:05:20,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101495166] [2020-10-27 00:05:20,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:05:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:20,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:20,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:23,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:24,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:24,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:25,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:25,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1524 [2020-10-27 00:05:25,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:05:25,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5110 [2020-10-27 00:05:25,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:25,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 00:05:25,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-27 00:05:25,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 669 [2020-10-27 00:05:25,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:25,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:05:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:25,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:25,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:25,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:05:25,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:25,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:05:25,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:25,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:25,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:25,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:25,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:25,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:05:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:25,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:25,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:25,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:05:25,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:25,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:05:25,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:25,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:25,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:25,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:25,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:25,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:05:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:25,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:25,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:25,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:05:25,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:25,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:05:25,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:25,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:25,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:25,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:25,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:25,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:05:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:25,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:25,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:25,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:05:25,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:25,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:05:25,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:25,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:25,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:25,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:25,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:25,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:05:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:25,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:25,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:25,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:05:25,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:25,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-27 00:05:25,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:25,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:25,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:25,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:25,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:26,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:05:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:26,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:26,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:26,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:05:26,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:26,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 00:05:26,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:26,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:05:26,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:26,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 00:05:26,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:26,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-27 00:05:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:26,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:26,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:26,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:26,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 00:05:26,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:05:26,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 00:05:26,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:26,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:26,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:26,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 00:05:26,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:26,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 924 [2020-10-27 00:05:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:26,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:26,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:26,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:26,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 00:05:26,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:05:26,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-27 00:05:26,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:26,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:26,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:26,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-27 00:05:26,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:26,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1112 [2020-10-27 00:05:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:26,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:26,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:26,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:26,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:05:26,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:05:26,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 00:05:26,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:26,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:26,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:26,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 00:05:26,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:26,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1222 [2020-10-27 00:05:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:26,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:26,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:26,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:26,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:05:26,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:05:26,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 00:05:26,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:26,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:26,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:26,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-27 00:05:26,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:26,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1360 [2020-10-27 00:05:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:26,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:26,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:26,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:26,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:05:26,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:05:26,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 00:05:26,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:26,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:26,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:26,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:05:26,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:28,831 INFO L134 CoverageAnalysis]: Checked inductivity of 5547 backedges. 3120 proven. 731 refuted. 0 times theorem prover too weak. 1696 trivial. 0 not checked. [2020-10-27 00:05:28,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101495166] [2020-10-27 00:05:28,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:05:28,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:05:28,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589604602] [2020-10-27 00:05:28,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:05:28,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:05:28,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:05:28,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:05:28,834 INFO L87 Difference]: Start difference. First operand 18117 states and 19132 transitions. Second operand 8 states. [2020-10-27 00:05:32,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:05:32,544 INFO L93 Difference]: Finished difference Result 35636 states and 37846 transitions. [2020-10-27 00:05:32,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:05:32,545 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1494 [2020-10-27 00:05:32,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:05:32,580 INFO L225 Difference]: With dead ends: 35636 [2020-10-27 00:05:32,581 INFO L226 Difference]: Without dead ends: 18203 [2020-10-27 00:05:32,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:05:32,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18203 states. [2020-10-27 00:05:32,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18203 to 17776. [2020-10-27 00:05:32,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17776 states. [2020-10-27 00:05:32,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17776 states to 17776 states and 18548 transitions. [2020-10-27 00:05:32,975 INFO L78 Accepts]: Start accepts. Automaton has 17776 states and 18548 transitions. Word has length 1494 [2020-10-27 00:05:32,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:05:32,977 INFO L481 AbstractCegarLoop]: Abstraction has 17776 states and 18548 transitions. [2020-10-27 00:05:32,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:05:32,977 INFO L276 IsEmpty]: Start isEmpty. Operand 17776 states and 18548 transitions. [2020-10-27 00:05:33,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1932 [2020-10-27 00:05:33,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:05:33,031 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 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, 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, 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, 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] [2020-10-27 00:05:33,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 00:05:33,031 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:05:33,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:05:33,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1852744088, now seen corresponding path program 1 times [2020-10-27 00:05:33,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:05:33,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714269259] [2020-10-27 00:05:33,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:05:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:33,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:33,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking...