/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/loops-crafted-1/nested_delay_notd2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:53:35,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:53:35,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:53:35,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:53:35,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:53:35,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:53:35,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:53:35,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:53:35,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:53:35,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:53:35,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:53:35,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:53:35,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:53:35,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:53:35,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:53:35,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:53:35,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:53:35,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:53:35,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:53:35,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:53:35,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:53:35,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:53:35,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:53:35,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:53:35,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:53:35,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:53:35,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:53:35,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:53:35,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:53:35,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-27 01:53:35,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:53:35,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:53:35,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:53:35,910 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 01:53:35,957 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:53:35,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:53:35,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:53:35,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:53:35,961 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:53:35,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:53:35,962 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:53:35,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:53:35,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:53:35,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:53:35,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:53:35,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:53:35,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:53:35,964 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:53:35,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:53:35,965 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:53:35,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:53:35,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:53:35,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:53:35,966 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:53:35,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:53:35,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:53:35,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:53:35,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:53:35,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:53:35,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:53:35,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:53:35,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:53:35,967 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:53:35,967 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:53:36,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:53:36,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:53:36,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:53:36,393 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:53:36,394 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:53:36,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested_delay_notd2.c [2020-10-27 01:53:36,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b354c82cf/03f7a0180ee240188179da49121d086a/FLAG5788c1de7 [2020-10-27 01:53:37,211 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:53:37,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/nested_delay_notd2.c [2020-10-27 01:53:37,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b354c82cf/03f7a0180ee240188179da49121d086a/FLAG5788c1de7 [2020-10-27 01:53:37,581 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b354c82cf/03f7a0180ee240188179da49121d086a [2020-10-27 01:53:37,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:53:37,601 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:53:37,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:53:37,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:53:37,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:53:37,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:53:37" (1/1) ... [2020-10-27 01:53:37,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489b8964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:53:37, skipping insertion in model container [2020-10-27 01:53:37,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:53:37" (1/1) ... [2020-10-27 01:53:37,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:53:37,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:53:37,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:53:37,890 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:53:37,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:53:37,936 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:53:37,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:53:37 WrapperNode [2020-10-27 01:53:37,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:53:37,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:53:37,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:53:37,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:53:37,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:53:37" (1/1) ... [2020-10-27 01:53:37,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:53:37" (1/1) ... [2020-10-27 01:53:37,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:53:37" (1/1) ... [2020-10-27 01:53:37,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:53:37" (1/1) ... [2020-10-27 01:53:37,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:53:37" (1/1) ... [2020-10-27 01:53:37,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:53:37" (1/1) ... [2020-10-27 01:53:38,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:53:37" (1/1) ... [2020-10-27 01:53:38,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:53:38,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:53:38,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:53:38,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:53:38,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:53:37" (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 01:53:38,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:53:38,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:53:38,103 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:53:38,103 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 01:53:38,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 01:53:38,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:53:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:53:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:53:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:53:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:53:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 01:53:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 01:53:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 01:53:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:53:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:53:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:53:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:53:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:53:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:53:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:53:38,450 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:53:38,451 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 01:53:38,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:53:38 BoogieIcfgContainer [2020-10-27 01:53:38,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:53:38,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:53:38,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:53:38,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:53:38,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:53:37" (1/3) ... [2020-10-27 01:53:38,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f86d4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:53:38, skipping insertion in model container [2020-10-27 01:53:38,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:53:37" (2/3) ... [2020-10-27 01:53:38,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f86d4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:53:38, skipping insertion in model container [2020-10-27 01:53:38,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:53:38" (3/3) ... [2020-10-27 01:53:38,509 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_delay_notd2.c [2020-10-27 01:53:38,549 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:53:38,562 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:53:38,587 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:53:38,616 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:53:38,616 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:53:38,616 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:53:38,616 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:53:38,617 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:53:38,617 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:53:38,617 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:53:38,617 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:53:38,636 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-27 01:53:38,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 01:53:38,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:53:38,644 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] [2020-10-27 01:53:38,644 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:53:38,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:53:38,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1391196817, now seen corresponding path program 1 times [2020-10-27 01:53:38,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:53:38,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45189549] [2020-10-27 01:53:38,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:53:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:38,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:38,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:39,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:39,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:39,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:39,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:39,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:39,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 01:53:39,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:53:39,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 866 [2020-10-27 01:53:39,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:39,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:53:39,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:53:39,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 01:53:39,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:53:39,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:53:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:39,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:39,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:39,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:53:39,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:39,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 01:53:39,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:39,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:39,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:39,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:53:39,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:53:39,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:53:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:39,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:39,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:39,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:39,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:53:39,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:53:39,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:53:39,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:39,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:39,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:39,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:53:39,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:39,900 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 01:53:39,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45189549] [2020-10-27 01:53:39,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:53:39,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:53:39,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677957896] [2020-10-27 01:53:39,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:53:39,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:53:39,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:53:39,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:53:39,932 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 5 states. [2020-10-27 01:53:40,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:53:40,206 INFO L93 Difference]: Finished difference Result 64 states and 97 transitions. [2020-10-27 01:53:40,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 01:53:40,208 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-27 01:53:40,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:53:40,218 INFO L225 Difference]: With dead ends: 64 [2020-10-27 01:53:40,218 INFO L226 Difference]: Without dead ends: 37 [2020-10-27 01:53:40,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:53:40,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-27 01:53:40,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-27 01:53:40,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-27 01:53:40,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2020-10-27 01:53:40,274 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 22 [2020-10-27 01:53:40,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:53:40,275 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2020-10-27 01:53:40,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:53:40,275 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2020-10-27 01:53:40,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 01:53:40,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:53:40,277 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] [2020-10-27 01:53:40,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:53:40,278 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:53:40,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:53:40,279 INFO L82 PathProgramCache]: Analyzing trace with hash 357074144, now seen corresponding path program 1 times [2020-10-27 01:53:40,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:53:40,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992732884] [2020-10-27 01:53:40,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:53:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:40,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:40,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:40,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:40,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:40,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:40,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 01:53:40,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:53:40,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-27 01:53:40,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:40,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:53:40,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:53:40,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:53:40,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:40,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:53:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:40,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:40,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:40,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:53:40,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:40,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 01:53:40,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:40,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:53:40,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:40,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:53:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:40,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:40,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:40,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:53:40,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:40,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:53:40,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:40,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:40,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:40,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:53:40,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:53:40,588 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 01:53:40,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992732884] [2020-10-27 01:53:40,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:53:40,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:53:40,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890887760] [2020-10-27 01:53:40,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:53:40,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:53:40,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:53:40,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:53:40,595 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 5 states. [2020-10-27 01:53:40,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:53:40,870 INFO L93 Difference]: Finished difference Result 69 states and 97 transitions. [2020-10-27 01:53:40,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 01:53:40,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-27 01:53:40,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:53:40,873 INFO L225 Difference]: With dead ends: 69 [2020-10-27 01:53:40,873 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 01:53:40,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:53:40,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 01:53:40,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2020-10-27 01:53:40,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 01:53:40,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2020-10-27 01:53:40,890 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 22 [2020-10-27 01:53:40,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:53:40,890 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2020-10-27 01:53:40,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:53:40,891 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2020-10-27 01:53:40,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 01:53:40,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:53:40,892 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] [2020-10-27 01:53:40,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:53:40,893 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:53:40,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:53:40,894 INFO L82 PathProgramCache]: Analyzing trace with hash 513104896, now seen corresponding path program 1 times [2020-10-27 01:53:40,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:53:40,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229193392] [2020-10-27 01:53:40,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:53:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:40,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:40,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:40,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:41,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:41,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:41,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:41,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:41,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:41,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:41,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 01:53:41,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 01:53:41,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-10-27 01:53:41,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:41,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:53:41,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:53:41,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 01:53:41,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:42,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:53:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:42,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:42,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:42,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:53:42,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:42,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:53:42,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:42,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:42,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:42,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:53:42,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:42,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:53:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:42,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:42,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:42,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:53:42,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:42,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:53:42,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:42,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:42,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:42,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:53:42,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:42,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:53:42,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229193392] [2020-10-27 01:53:42,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:53:42,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 01:53:42,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639591227] [2020-10-27 01:53:42,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:53:42,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:53:42,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:53:42,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:53:42,059 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand 7 states. [2020-10-27 01:53:42,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:53:42,533 INFO L93 Difference]: Finished difference Result 116 states and 163 transitions. [2020-10-27 01:53:42,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 01:53:42,534 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-27 01:53:42,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:53:42,536 INFO L225 Difference]: With dead ends: 116 [2020-10-27 01:53:42,536 INFO L226 Difference]: Without dead ends: 89 [2020-10-27 01:53:42,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-27 01:53:42,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-27 01:53:42,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 67. [2020-10-27 01:53:42,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-27 01:53:42,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 90 transitions. [2020-10-27 01:53:42,555 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 90 transitions. Word has length 25 [2020-10-27 01:53:42,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:53:42,556 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 90 transitions. [2020-10-27 01:53:42,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:53:42,556 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 90 transitions. [2020-10-27 01:53:42,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 01:53:42,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:53:42,557 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] [2020-10-27 01:53:42,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:53:42,558 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:53:42,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:53:42,559 INFO L82 PathProgramCache]: Analyzing trace with hash 404822848, now seen corresponding path program 1 times [2020-10-27 01:53:42,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:53:42,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304948027] [2020-10-27 01:53:42,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:53:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:42,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:42,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:42,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:42,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 01:53:42,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:53:42,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 01:53:42,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:42,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:53:42,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:53:42,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 01:53:42,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:42,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:53:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:42,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:42,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:42,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:53:42,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:42,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:53:42,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:42,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:42,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:42,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:53:42,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:42,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:53:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:42,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:42,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:42,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:53:42,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:42,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:53:42,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:42,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:42,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:42,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:53:42,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:42,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:53:42,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304948027] [2020-10-27 01:53:42,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:53:42,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 01:53:42,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306490618] [2020-10-27 01:53:42,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:53:42,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:53:42,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:53:42,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:53:42,795 INFO L87 Difference]: Start difference. First operand 67 states and 90 transitions. Second operand 6 states. [2020-10-27 01:53:42,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:53:42,988 INFO L93 Difference]: Finished difference Result 141 states and 197 transitions. [2020-10-27 01:53:42,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 01:53:42,989 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-27 01:53:42,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:53:42,990 INFO L225 Difference]: With dead ends: 141 [2020-10-27 01:53:42,990 INFO L226 Difference]: Without dead ends: 86 [2020-10-27 01:53:42,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:53:42,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-27 01:53:43,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 77. [2020-10-27 01:53:43,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-27 01:53:43,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 102 transitions. [2020-10-27 01:53:43,005 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 102 transitions. Word has length 25 [2020-10-27 01:53:43,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:53:43,006 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 102 transitions. [2020-10-27 01:53:43,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:53:43,006 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 102 transitions. [2020-10-27 01:53:43,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 01:53:43,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:53:43,007 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:53:43,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:53:43,008 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:53:43,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:53:43,008 INFO L82 PathProgramCache]: Analyzing trace with hash -149840420, now seen corresponding path program 1 times [2020-10-27 01:53:43,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:53:43,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396893861] [2020-10-27 01:53:43,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:53:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:43,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:43,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:43,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:43,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:43,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:43,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:43,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:43,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 01:53:43,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:53:43,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-10-27 01:53:43,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:43,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:53:43,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:53:43,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 01:53:43,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:43,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:53:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:43,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:43,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:43,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:53:43,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:43,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:53:43,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:53:43,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:43,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:53:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:43,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:43,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:43,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:53:43,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:43,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:53:43,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:43,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:43,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:43,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:53:43,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:43,876 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:53:43,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396893861] [2020-10-27 01:53:43,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:53:43,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 01:53:43,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379754801] [2020-10-27 01:53:43,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:53:43,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:53:43,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:53:43,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:53:43,879 INFO L87 Difference]: Start difference. First operand 77 states and 102 transitions. Second operand 7 states. [2020-10-27 01:53:44,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:53:44,095 INFO L93 Difference]: Finished difference Result 163 states and 225 transitions. [2020-10-27 01:53:44,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:53:44,095 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-27 01:53:44,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:53:44,097 INFO L225 Difference]: With dead ends: 163 [2020-10-27 01:53:44,097 INFO L226 Difference]: Without dead ends: 98 [2020-10-27 01:53:44,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:53:44,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-27 01:53:44,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 89. [2020-10-27 01:53:44,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-27 01:53:44,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 118 transitions. [2020-10-27 01:53:44,111 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 118 transitions. Word has length 28 [2020-10-27 01:53:44,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:53:44,111 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 118 transitions. [2020-10-27 01:53:44,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:53:44,112 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 118 transitions. [2020-10-27 01:53:44,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 01:53:44,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:53:44,113 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 01:53:44,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 01:53:44,113 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:53:44,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:53:44,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1384069696, now seen corresponding path program 2 times [2020-10-27 01:53:44,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:53:44,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784459954] [2020-10-27 01:53:44,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:53:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:44,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:44,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:44,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:44,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:44,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:44,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:44,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:44,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:45,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:45,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 01:53:45,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 01:53:45,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1169 [2020-10-27 01:53:45,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:45,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:53:45,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:53:45,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 01:53:45,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:45,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:53:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:45,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:45,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:45,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:53:45,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:45,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:53:45,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:45,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:45,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:45,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:53:45,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:45,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:53:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:45,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:45,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:45,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:53:45,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:45,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:53:45,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:45,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:45,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:45,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:53:45,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:45,428 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:53:45,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784459954] [2020-10-27 01:53:45,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:53:45,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 01:53:45,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327934794] [2020-10-27 01:53:45,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 01:53:45,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:53:45,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 01:53:45,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:53:45,431 INFO L87 Difference]: Start difference. First operand 89 states and 118 transitions. Second operand 8 states. [2020-10-27 01:53:45,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:53:45,675 INFO L93 Difference]: Finished difference Result 187 states and 257 transitions. [2020-10-27 01:53:45,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 01:53:45,676 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-27 01:53:45,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:53:45,677 INFO L225 Difference]: With dead ends: 187 [2020-10-27 01:53:45,677 INFO L226 Difference]: Without dead ends: 110 [2020-10-27 01:53:45,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-27 01:53:45,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-27 01:53:45,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 101. [2020-10-27 01:53:45,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-27 01:53:45,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 134 transitions. [2020-10-27 01:53:45,692 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 134 transitions. Word has length 31 [2020-10-27 01:53:45,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:53:45,692 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 134 transitions. [2020-10-27 01:53:45,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 01:53:45,693 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 134 transitions. [2020-10-27 01:53:45,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 01:53:45,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:53:45,694 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:53:45,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 01:53:45,694 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:53:45,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:53:45,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1093409956, now seen corresponding path program 3 times [2020-10-27 01:53:45,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:53:45,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851128910] [2020-10-27 01:53:45,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:53:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:45,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:45,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:45,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:45,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:45,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:45,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:45,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:45,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:46,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:46,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:47,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:47,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:47,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:49,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:49,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 01:53:49,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 01:53:49,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3701 [2020-10-27 01:53:49,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:53:49,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:53:49,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 01:53:49,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:49,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:53:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:49,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:49,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:49,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:53:49,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:49,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 01:53:49,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:49,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:53:49,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:49,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:53:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:49,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:49,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:49,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:53:49,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:49,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:53:49,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:49,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:49,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:49,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:53:49,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:49,553 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 01:53:49,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851128910] [2020-10-27 01:53:49,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:53:49,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 01:53:49,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682784589] [2020-10-27 01:53:49,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 01:53:49,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:53:49,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 01:53:49,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:53:49,556 INFO L87 Difference]: Start difference. First operand 101 states and 134 transitions. Second operand 9 states. [2020-10-27 01:53:50,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:53:50,210 INFO L93 Difference]: Finished difference Result 278 states and 375 transitions. [2020-10-27 01:53:50,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 01:53:50,211 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-27 01:53:50,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:53:50,213 INFO L225 Difference]: With dead ends: 278 [2020-10-27 01:53:50,213 INFO L226 Difference]: Without dead ends: 189 [2020-10-27 01:53:50,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-10-27 01:53:50,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-27 01:53:50,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 101. [2020-10-27 01:53:50,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-27 01:53:50,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 134 transitions. [2020-10-27 01:53:50,231 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 134 transitions. Word has length 34 [2020-10-27 01:53:50,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:53:50,231 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 134 transitions. [2020-10-27 01:53:50,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 01:53:50,232 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 134 transitions. [2020-10-27 01:53:50,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 01:53:50,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:53:50,233 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:53:50,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 01:53:50,234 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:53:50,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:53:50,234 INFO L82 PathProgramCache]: Analyzing trace with hash 602092188, now seen corresponding path program 4 times [2020-10-27 01:53:50,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:53:50,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859411909] [2020-10-27 01:53:50,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:53:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:50,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:50,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:50,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:50,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:50,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:50,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:50,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 01:53:50,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:53:50,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 631 [2020-10-27 01:53:50,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:50,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:53:50,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:53:50,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 01:53:50,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:50,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:53:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:50,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:50,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:50,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:53:50,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:50,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:53:50,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:50,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:50,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:50,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:53:50,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:51,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:53:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:51,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:51,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:51,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:53:51,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:51,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:53:51,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:53:51,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:51,012 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:53:51,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859411909] [2020-10-27 01:53:51,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:53:51,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 01:53:51,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100518411] [2020-10-27 01:53:51,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 01:53:51,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:53:51,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 01:53:51,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:53:51,015 INFO L87 Difference]: Start difference. First operand 101 states and 134 transitions. Second operand 10 states. [2020-10-27 01:53:51,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:53:51,741 INFO L93 Difference]: Finished difference Result 270 states and 367 transitions. [2020-10-27 01:53:51,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 01:53:51,742 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-10-27 01:53:51,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:53:51,743 INFO L225 Difference]: With dead ends: 270 [2020-10-27 01:53:51,743 INFO L226 Difference]: Without dead ends: 181 [2020-10-27 01:53:51,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=223, Invalid=589, Unknown=0, NotChecked=0, Total=812 [2020-10-27 01:53:51,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-27 01:53:51,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 103. [2020-10-27 01:53:51,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-27 01:53:51,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 138 transitions. [2020-10-27 01:53:51,759 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 138 transitions. Word has length 34 [2020-10-27 01:53:51,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:53:51,760 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 138 transitions. [2020-10-27 01:53:51,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 01:53:51,760 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 138 transitions. [2020-10-27 01:53:51,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 01:53:51,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:53:51,761 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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 01:53:51,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 01:53:51,761 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:53:51,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:53:51,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1303156766, now seen corresponding path program 2 times [2020-10-27 01:53:51,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:53:51,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828963134] [2020-10-27 01:53:51,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:53:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:51,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:51,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:51,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:51,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 01:53:51,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:53:51,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-27 01:53:51,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:51,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:53:51,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:53:51,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 01:53:51,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:52,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:53:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:52,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:52,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:52,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:53:52,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:52,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:53:52,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:52,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:52,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:52,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:53:52,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:52,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:53:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:52,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:52,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:52,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:53:52,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:52,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:53:52,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:52,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:52,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:52,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:53:52,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:52,048 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:53:52,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828963134] [2020-10-27 01:53:52,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:53:52,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 01:53:52,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844528204] [2020-10-27 01:53:52,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 01:53:52,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:53:52,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 01:53:52,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:53:52,056 INFO L87 Difference]: Start difference. First operand 103 states and 138 transitions. Second operand 9 states. [2020-10-27 01:53:52,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:53:52,376 INFO L93 Difference]: Finished difference Result 223 states and 303 transitions. [2020-10-27 01:53:52,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 01:53:52,377 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-27 01:53:52,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:53:52,378 INFO L225 Difference]: With dead ends: 223 [2020-10-27 01:53:52,378 INFO L226 Difference]: Without dead ends: 132 [2020-10-27 01:53:52,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-27 01:53:52,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-27 01:53:52,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 113. [2020-10-27 01:53:52,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-27 01:53:52,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 150 transitions. [2020-10-27 01:53:52,402 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 150 transitions. Word has length 34 [2020-10-27 01:53:52,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:53:52,403 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 150 transitions. [2020-10-27 01:53:52,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 01:53:52,403 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 150 transitions. [2020-10-27 01:53:52,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 01:53:52,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:53:52,409 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 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 01:53:52,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 01:53:52,409 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:53:52,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:53:52,410 INFO L82 PathProgramCache]: Analyzing trace with hash 174689342, now seen corresponding path program 5 times [2020-10-27 01:53:52,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:53:52,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047293300] [2020-10-27 01:53:52,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:53:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:52,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:52,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:52,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:52,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:52,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:53,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:53,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 01:53:53,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:53:53,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 615 [2020-10-27 01:53:53,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:53,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:53:53,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:53:53,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 01:53:53,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:53,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:53:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:53,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:53,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:53,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:53:53,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:53,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:53:53,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:53,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:53,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:53,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:53:53,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:53,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:53:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:53,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:53,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:53,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:53:53,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:53,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:53:53,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:53,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:53,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:53,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:53:53,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:53,180 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:53:53,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047293300] [2020-10-27 01:53:53,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:53:53,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 01:53:53,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982845086] [2020-10-27 01:53:53,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 01:53:53,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:53:53,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 01:53:53,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:53:53,184 INFO L87 Difference]: Start difference. First operand 113 states and 150 transitions. Second operand 10 states. [2020-10-27 01:53:53,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:53:53,661 INFO L93 Difference]: Finished difference Result 245 states and 331 transitions. [2020-10-27 01:53:53,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 01:53:53,662 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-10-27 01:53:53,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:53:53,663 INFO L225 Difference]: With dead ends: 245 [2020-10-27 01:53:53,663 INFO L226 Difference]: Without dead ends: 144 [2020-10-27 01:53:53,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-27 01:53:53,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-27 01:53:53,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 125. [2020-10-27 01:53:53,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-27 01:53:53,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2020-10-27 01:53:53,677 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 37 [2020-10-27 01:53:53,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:53:53,678 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2020-10-27 01:53:53,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 01:53:53,678 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2020-10-27 01:53:53,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 01:53:53,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:53:53,679 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:53:53,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 01:53:53,679 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:53:53,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:53:53,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1289313250, now seen corresponding path program 6 times [2020-10-27 01:53:53,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:53:53,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993891860] [2020-10-27 01:53:53,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:53:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:53,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:53,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:53,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:53,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:53,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:53,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:53,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:54,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:54,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:54,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 01:53:54,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 01:53:54,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1204 [2020-10-27 01:53:54,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:54,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:53:54,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:53:54,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 01:53:54,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:55,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:53:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:55,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:55,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:55,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:53:55,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:55,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:53:55,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:53:55,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:55,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:53:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:55,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:55,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:55,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:53:55,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:55,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:53:55,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:55,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:55,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:55,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:53:55,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:55,070 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:53:55,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993891860] [2020-10-27 01:53:55,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:53:55,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 01:53:55,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236689914] [2020-10-27 01:53:55,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 01:53:55,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:53:55,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 01:53:55,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:53:55,073 INFO L87 Difference]: Start difference. First operand 125 states and 166 transitions. Second operand 12 states. [2020-10-27 01:53:55,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:53:55,784 INFO L93 Difference]: Finished difference Result 312 states and 424 transitions. [2020-10-27 01:53:55,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 01:53:55,785 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-10-27 01:53:55,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:53:55,787 INFO L225 Difference]: With dead ends: 312 [2020-10-27 01:53:55,787 INFO L226 Difference]: Without dead ends: 199 [2020-10-27 01:53:55,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2020-10-27 01:53:55,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-27 01:53:55,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 127. [2020-10-27 01:53:55,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-27 01:53:55,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 168 transitions. [2020-10-27 01:53:55,802 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 168 transitions. Word has length 40 [2020-10-27 01:53:55,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:53:55,803 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 168 transitions. [2020-10-27 01:53:55,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 01:53:55,803 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 168 transitions. [2020-10-27 01:53:55,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 01:53:55,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:53:55,804 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 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 01:53:55,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 01:53:55,804 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:53:55,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:53:55,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1599365922, now seen corresponding path program 3 times [2020-10-27 01:53:55,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:53:55,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942572647] [2020-10-27 01:53:55,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:53:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:55,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:55,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:56,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:56,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 01:53:56,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:53:56,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-27 01:53:56,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:56,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 01:53:56,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:53:56,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 01:53:56,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:56,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:53:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:56,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:56,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:56,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:53:56,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:56,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 01:53:56,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:56,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:56,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:56,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:53:56,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:53:56,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:53:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:56,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:56,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:56,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:53:56,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:56,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:53:56,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:56,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:56,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:56,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:53:56,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:56,183 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:53:56,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942572647] [2020-10-27 01:53:56,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:53:56,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 01:53:56,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779397864] [2020-10-27 01:53:56,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 01:53:56,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:53:56,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 01:53:56,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:53:56,185 INFO L87 Difference]: Start difference. First operand 127 states and 168 transitions. Second operand 11 states. [2020-10-27 01:53:56,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:53:56,543 INFO L93 Difference]: Finished difference Result 271 states and 363 transitions. [2020-10-27 01:53:56,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 01:53:56,544 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-27 01:53:56,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:53:56,545 INFO L225 Difference]: With dead ends: 271 [2020-10-27 01:53:56,545 INFO L226 Difference]: Without dead ends: 156 [2020-10-27 01:53:56,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2020-10-27 01:53:56,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-27 01:53:56,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 137. [2020-10-27 01:53:56,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-27 01:53:56,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 180 transitions. [2020-10-27 01:53:56,561 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 180 transitions. Word has length 40 [2020-10-27 01:53:56,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:53:56,561 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 180 transitions. [2020-10-27 01:53:56,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 01:53:56,562 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 180 transitions. [2020-10-27 01:53:56,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 01:53:56,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:53:56,562 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 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 01:53:56,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 01:53:56,563 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:53:56,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:53:56,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1697861502, now seen corresponding path program 7 times [2020-10-27 01:53:56,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:53:56,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993833318] [2020-10-27 01:53:56,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:53:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:56,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:56,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:56,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:56,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:56,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:57,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:57,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 01:53:57,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:53:57,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 675 [2020-10-27 01:53:57,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:57,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 01:53:57,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:53:57,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 01:53:57,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:57,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:53:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:57,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:57,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:57,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:53:57,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:57,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:53:57,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:57,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:57,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:57,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:53:57,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:57,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:53:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:57,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:57,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:57,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:53:57,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:57,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:53:57,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:57,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:57,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:57,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:53:57,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:57,426 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:53:57,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993833318] [2020-10-27 01:53:57,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:53:57,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 01:53:57,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25603312] [2020-10-27 01:53:57,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 01:53:57,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:53:57,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 01:53:57,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-27 01:53:57,428 INFO L87 Difference]: Start difference. First operand 137 states and 180 transitions. Second operand 13 states. [2020-10-27 01:53:58,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:53:58,294 INFO L93 Difference]: Finished difference Result 342 states and 460 transitions. [2020-10-27 01:53:58,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 01:53:58,295 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-10-27 01:53:58,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:53:58,298 INFO L225 Difference]: With dead ends: 342 [2020-10-27 01:53:58,299 INFO L226 Difference]: Without dead ends: 217 [2020-10-27 01:53:58,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2020-10-27 01:53:58,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-27 01:53:58,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 139. [2020-10-27 01:53:58,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-27 01:53:58,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 184 transitions. [2020-10-27 01:53:58,321 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 184 transitions. Word has length 43 [2020-10-27 01:53:58,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:53:58,321 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 184 transitions. [2020-10-27 01:53:58,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 01:53:58,322 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 184 transitions. [2020-10-27 01:53:58,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 01:53:58,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:53:58,322 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 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 01:53:58,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 01:53:58,323 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:53:58,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:53:58,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1896041216, now seen corresponding path program 4 times [2020-10-27 01:53:58,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:53:58,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637755830] [2020-10-27 01:53:58,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:53:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:58,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:58,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:58,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:58,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 01:53:58,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:53:58,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-27 01:53:58,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:58,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:53:58,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:53:58,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 01:53:58,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:58,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:53:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:58,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:58,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:58,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:53:58,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:58,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:53:58,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:58,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:58,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:58,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:53:58,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:58,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:53:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:58,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:58,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:53:58,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:53:58,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:53:58,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:53:58,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:53:58,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:53:58,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:53:58,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:53:58,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:53:58,801 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:53:58,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637755830] [2020-10-27 01:53:58,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:53:58,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 01:53:58,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580882757] [2020-10-27 01:53:58,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 01:53:58,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:53:58,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 01:53:58,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:53:58,804 INFO L87 Difference]: Start difference. First operand 139 states and 184 transitions. Second operand 12 states. [2020-10-27 01:53:59,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:53:59,197 INFO L93 Difference]: Finished difference Result 295 states and 395 transitions. [2020-10-27 01:53:59,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 01:53:59,198 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2020-10-27 01:53:59,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:53:59,200 INFO L225 Difference]: With dead ends: 295 [2020-10-27 01:53:59,200 INFO L226 Difference]: Without dead ends: 168 [2020-10-27 01:53:59,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2020-10-27 01:53:59,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-27 01:53:59,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 149. [2020-10-27 01:53:59,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-27 01:53:59,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 196 transitions. [2020-10-27 01:53:59,222 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 196 transitions. Word has length 43 [2020-10-27 01:53:59,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:53:59,223 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 196 transitions. [2020-10-27 01:53:59,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 01:53:59,223 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 196 transitions. [2020-10-27 01:53:59,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 01:53:59,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:53:59,224 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 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 01:53:59,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 01:53:59,225 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:53:59,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:53:59,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1808094180, now seen corresponding path program 8 times [2020-10-27 01:53:59,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:53:59,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814466434] [2020-10-27 01:53:59,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:53:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:53:59,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:59,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:59,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:59,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:53:59,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:00,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:00,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 01:54:00,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:54:00,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1050 [2020-10-27 01:54:00,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:00,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 01:54:00,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:54:00,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 01:54:00,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:00,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:54:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:00,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:00,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:00,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:54:00,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:00,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:54:00,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:00,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:00,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:00,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:54:00,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:00,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:54:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:00,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:00,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:00,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:54:00,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:00,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:54:00,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:00,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:00,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:00,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:54:00,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:00,464 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:54:00,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814466434] [2020-10-27 01:54:00,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:54:00,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 01:54:00,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003747040] [2020-10-27 01:54:00,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 01:54:00,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:54:00,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 01:54:00,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-10-27 01:54:00,468 INFO L87 Difference]: Start difference. First operand 149 states and 196 transitions. Second operand 13 states. [2020-10-27 01:54:00,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:54:00,935 INFO L93 Difference]: Finished difference Result 317 states and 423 transitions. [2020-10-27 01:54:00,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 01:54:00,943 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-27 01:54:00,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:54:00,945 INFO L225 Difference]: With dead ends: 317 [2020-10-27 01:54:00,945 INFO L226 Difference]: Without dead ends: 180 [2020-10-27 01:54:00,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2020-10-27 01:54:00,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-27 01:54:00,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 161. [2020-10-27 01:54:00,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-27 01:54:00,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 212 transitions. [2020-10-27 01:54:00,962 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 212 transitions. Word has length 46 [2020-10-27 01:54:00,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:54:00,963 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 212 transitions. [2020-10-27 01:54:00,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 01:54:00,963 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 212 transitions. [2020-10-27 01:54:00,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 01:54:00,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:54:00,964 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:54:00,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 01:54:00,964 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:54:00,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:54:00,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1707995264, now seen corresponding path program 9 times [2020-10-27 01:54:00,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:54:00,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543071202] [2020-10-27 01:54:00,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:54:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:00,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:00,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:01,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:01,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:01,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:01,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:01,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:01,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:02,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:02,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 01:54:02,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 01:54:02,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1145 [2020-10-27 01:54:02,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:02,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:54:02,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:54:02,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 01:54:02,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:54:02,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:54:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:02,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:02,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:02,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:54:02,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:02,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:54:02,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:02,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:02,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:02,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:54:02,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:02,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:54:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:02,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:02,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:02,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:54:02,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:02,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:54:02,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:02,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:02,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:02,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:54:02,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:02,384 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:54:02,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543071202] [2020-10-27 01:54:02,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:54:02,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 01:54:02,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882708069] [2020-10-27 01:54:02,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 01:54:02,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:54:02,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 01:54:02,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-27 01:54:02,388 INFO L87 Difference]: Start difference. First operand 161 states and 212 transitions. Second operand 15 states. [2020-10-27 01:54:03,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:54:03,870 INFO L93 Difference]: Finished difference Result 432 states and 575 transitions. [2020-10-27 01:54:03,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 01:54:03,871 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 49 [2020-10-27 01:54:03,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:54:03,873 INFO L225 Difference]: With dead ends: 432 [2020-10-27 01:54:03,873 INFO L226 Difference]: Without dead ends: 283 [2020-10-27 01:54:03,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=793, Invalid=2069, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 01:54:03,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-27 01:54:03,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 235. [2020-10-27 01:54:03,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-27 01:54:03,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 313 transitions. [2020-10-27 01:54:03,903 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 313 transitions. Word has length 49 [2020-10-27 01:54:03,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:54:03,904 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 313 transitions. [2020-10-27 01:54:03,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 01:54:03,904 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 313 transitions. [2020-10-27 01:54:03,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 01:54:03,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:54:03,905 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 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 01:54:03,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 01:54:03,905 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:54:03,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:54:03,906 INFO L82 PathProgramCache]: Analyzing trace with hash -2018047936, now seen corresponding path program 5 times [2020-10-27 01:54:03,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:54:03,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48262668] [2020-10-27 01:54:03,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:54:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:03,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:03,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:04,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:04,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 01:54:04,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:54:04,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-27 01:54:04,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:04,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:54:04,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:54:04,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 01:54:04,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:04,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:54:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:04,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:04,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:04,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:54:04,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:04,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 01:54:04,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:04,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:04,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:04,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:54:04,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:04,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:54:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:04,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:04,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:04,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:54:04,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:04,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:54:04,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:04,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:54:04,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:04,398 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:54:04,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48262668] [2020-10-27 01:54:04,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:54:04,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 01:54:04,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042200746] [2020-10-27 01:54:04,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 01:54:04,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:54:04,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 01:54:04,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-10-27 01:54:04,400 INFO L87 Difference]: Start difference. First operand 235 states and 313 transitions. Second operand 14 states. [2020-10-27 01:54:04,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:54:04,944 INFO L93 Difference]: Finished difference Result 507 states and 679 transitions. [2020-10-27 01:54:04,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 01:54:04,945 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 49 [2020-10-27 01:54:04,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:54:04,947 INFO L225 Difference]: With dead ends: 507 [2020-10-27 01:54:04,947 INFO L226 Difference]: Without dead ends: 284 [2020-10-27 01:54:04,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=204, Invalid=396, Unknown=0, NotChecked=0, Total=600 [2020-10-27 01:54:04,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-27 01:54:04,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 251. [2020-10-27 01:54:04,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-27 01:54:04,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 333 transitions. [2020-10-27 01:54:04,973 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 333 transitions. Word has length 49 [2020-10-27 01:54:04,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:54:04,973 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 333 transitions. [2020-10-27 01:54:04,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 01:54:04,974 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 333 transitions. [2020-10-27 01:54:04,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 01:54:04,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:54:04,974 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 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 01:54:04,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 01:54:04,975 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:54:04,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:54:04,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1327010012, now seen corresponding path program 10 times [2020-10-27 01:54:04,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:54:04,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973666308] [2020-10-27 01:54:04,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:54:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:04,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:05,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:05,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:05,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:05,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:05,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:05,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 01:54:05,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:54:05,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 981 [2020-10-27 01:54:05,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:05,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:54:05,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:54:05,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 01:54:05,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:06,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:54:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:06,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:06,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:06,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:54:06,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:06,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:54:06,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:06,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:06,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:06,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:54:06,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:06,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:54:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:06,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:06,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:06,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:54:06,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:06,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:54:06,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:06,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:06,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:06,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:54:06,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:06,189 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:54:06,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973666308] [2020-10-27 01:54:06,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:54:06,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 01:54:06,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267651609] [2020-10-27 01:54:06,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 01:54:06,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:54:06,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 01:54:06,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-10-27 01:54:06,192 INFO L87 Difference]: Start difference. First operand 251 states and 333 transitions. Second operand 15 states. [2020-10-27 01:54:06,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:54:06,671 INFO L93 Difference]: Finished difference Result 541 states and 723 transitions. [2020-10-27 01:54:06,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 01:54:06,674 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-10-27 01:54:06,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:54:06,676 INFO L225 Difference]: With dead ends: 541 [2020-10-27 01:54:06,676 INFO L226 Difference]: Without dead ends: 302 [2020-10-27 01:54:06,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=240, Invalid=462, Unknown=0, NotChecked=0, Total=702 [2020-10-27 01:54:06,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-27 01:54:06,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 269. [2020-10-27 01:54:06,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-27 01:54:06,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 357 transitions. [2020-10-27 01:54:06,702 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 357 transitions. Word has length 52 [2020-10-27 01:54:06,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:54:06,702 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 357 transitions. [2020-10-27 01:54:06,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 01:54:06,702 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 357 transitions. [2020-10-27 01:54:06,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 01:54:06,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:54:06,703 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:54:06,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 01:54:06,704 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:54:06,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:54:06,704 INFO L82 PathProgramCache]: Analyzing trace with hash 2117137088, now seen corresponding path program 11 times [2020-10-27 01:54:06,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:54:06,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424120382] [2020-10-27 01:54:06,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:54:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:06,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:06,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:06,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:06,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:06,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:07,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:07,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:07,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:07,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:07,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 01:54:07,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 01:54:07,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1138 [2020-10-27 01:54:07,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:07,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 01:54:07,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:54:07,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 01:54:07,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:08,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:54:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:08,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:08,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:08,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:54:08,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:08,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:54:08,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:54:08,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:08,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:54:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:08,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:08,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:08,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:54:08,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:08,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:54:08,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:08,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:08,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:08,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:54:08,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:08,158 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:54:08,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424120382] [2020-10-27 01:54:08,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:54:08,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 01:54:08,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914800763] [2020-10-27 01:54:08,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 01:54:08,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:54:08,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 01:54:08,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-10-27 01:54:08,163 INFO L87 Difference]: Start difference. First operand 269 states and 357 transitions. Second operand 16 states. [2020-10-27 01:54:08,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:54:08,905 INFO L93 Difference]: Finished difference Result 577 states and 771 transitions. [2020-10-27 01:54:08,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 01:54:08,906 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 55 [2020-10-27 01:54:08,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:54:08,909 INFO L225 Difference]: With dead ends: 577 [2020-10-27 01:54:08,909 INFO L226 Difference]: Without dead ends: 320 [2020-10-27 01:54:08,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=279, Invalid=533, Unknown=0, NotChecked=0, Total=812 [2020-10-27 01:54:08,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-27 01:54:08,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 287. [2020-10-27 01:54:08,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-27 01:54:08,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 381 transitions. [2020-10-27 01:54:08,957 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 381 transitions. Word has length 55 [2020-10-27 01:54:08,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:54:08,958 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 381 transitions. [2020-10-27 01:54:08,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 01:54:08,958 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 381 transitions. [2020-10-27 01:54:08,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 01:54:08,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:54:08,959 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 9, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:54:08,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 01:54:08,959 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:54:08,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:54:08,960 INFO L82 PathProgramCache]: Analyzing trace with hash 77108828, now seen corresponding path program 12 times [2020-10-27 01:54:08,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:54:08,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26978433] [2020-10-27 01:54:08,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:54:08,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:08,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:08,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:09,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:09,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:09,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:09,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:09,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:09,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:09,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:09,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:09,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:09,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:10,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:11,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:11,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 01:54:11,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 01:54:11,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2298 [2020-10-27 01:54:11,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:11,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:54:11,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:54:11,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 01:54:11,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:11,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:54:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:11,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:11,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:11,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:54:11,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:11,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:54:11,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:11,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:11,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:11,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:54:11,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:11,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:54:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:11,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:11,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:11,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:54:11,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:11,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:54:11,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:11,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:11,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:11,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:54:11,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:54:11,554 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:54:11,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26978433] [2020-10-27 01:54:11,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:54:11,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 01:54:11,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209621041] [2020-10-27 01:54:11,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 01:54:11,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:54:11,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 01:54:11,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2020-10-27 01:54:11,556 INFO L87 Difference]: Start difference. First operand 287 states and 381 transitions. Second operand 17 states. [2020-10-27 01:54:12,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:54:12,285 INFO L93 Difference]: Finished difference Result 613 states and 819 transitions. [2020-10-27 01:54:12,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 01:54:12,286 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-10-27 01:54:12,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:54:12,289 INFO L225 Difference]: With dead ends: 613 [2020-10-27 01:54:12,290 INFO L226 Difference]: Without dead ends: 338 [2020-10-27 01:54:12,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=306, Invalid=564, Unknown=0, NotChecked=0, Total=870 [2020-10-27 01:54:12,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-10-27 01:54:12,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 305. [2020-10-27 01:54:12,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-10-27 01:54:12,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 405 transitions. [2020-10-27 01:54:12,322 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 405 transitions. Word has length 58 [2020-10-27 01:54:12,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:54:12,323 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 405 transitions. [2020-10-27 01:54:12,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 01:54:12,324 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 405 transitions. [2020-10-27 01:54:12,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 01:54:12,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:54:12,328 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 9, 4, 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 01:54:12,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 01:54:12,329 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:54:12,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:54:12,329 INFO L82 PathProgramCache]: Analyzing trace with hash -617546432, now seen corresponding path program 13 times [2020-10-27 01:54:12,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:54:12,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288801354] [2020-10-27 01:54:12,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:54:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:12,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:12,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:12,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:12,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:12,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:12,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:12,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:12,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:12,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:12,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:12,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:13,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:13,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:13,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:13,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:13,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:13,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:13,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:13,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:17,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:17,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 01:54:17,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-27 01:54:17,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 01:54:17,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:17,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 01:54:17,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:54:17,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 01:54:17,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:17,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:54:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:17,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:17,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:17,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:54:17,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:17,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:54:17,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:54:17,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:17,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:54:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:17,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:17,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:17,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:54:17,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:17,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:54:17,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:17,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:17,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:17,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:54:17,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:17,676 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 01:54:17,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288801354] [2020-10-27 01:54:17,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:54:17,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 01:54:17,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162037780] [2020-10-27 01:54:17,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 01:54:17,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:54:17,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 01:54:17,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-10-27 01:54:17,679 INFO L87 Difference]: Start difference. First operand 305 states and 405 transitions. Second operand 18 states. [2020-10-27 01:54:19,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:54:19,710 INFO L93 Difference]: Finished difference Result 772 states and 1021 transitions. [2020-10-27 01:54:19,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-27 01:54:19,711 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 61 [2020-10-27 01:54:19,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:54:19,714 INFO L225 Difference]: With dead ends: 772 [2020-10-27 01:54:19,714 INFO L226 Difference]: Without dead ends: 479 [2020-10-27 01:54:19,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1493 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1320, Invalid=3510, Unknown=0, NotChecked=0, Total=4830 [2020-10-27 01:54:19,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-10-27 01:54:19,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 305. [2020-10-27 01:54:19,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-10-27 01:54:19,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 405 transitions. [2020-10-27 01:54:19,746 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 405 transitions. Word has length 61 [2020-10-27 01:54:19,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:54:19,746 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 405 transitions. [2020-10-27 01:54:19,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 01:54:19,746 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 405 transitions. [2020-10-27 01:54:19,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 01:54:19,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:54:19,747 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 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 01:54:19,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 01:54:19,747 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:54:19,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:54:19,748 INFO L82 PathProgramCache]: Analyzing trace with hash 260307262, now seen corresponding path program 14 times [2020-10-27 01:54:19,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:54:19,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86900569] [2020-10-27 01:54:19,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:54:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:19,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:19,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:19,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:19,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:20,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:20,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:20,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 01:54:20,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:54:20,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 877 [2020-10-27 01:54:20,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:20,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 01:54:20,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:54:20,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 01:54:20,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:20,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:54:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:20,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:20,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:20,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:54:20,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:20,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:54:20,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:20,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:20,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:20,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:54:20,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:20,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:54:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:20,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:20,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:20,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:54:20,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:20,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:54:20,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:20,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:20,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:20,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:54:20,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:54:20,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86900569] [2020-10-27 01:54:20,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:54:20,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 01:54:20,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283090645] [2020-10-27 01:54:20,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 01:54:20,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:54:20,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 01:54:20,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2020-10-27 01:54:20,958 INFO L87 Difference]: Start difference. First operand 305 states and 405 transitions. Second operand 19 states. [2020-10-27 01:54:23,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:54:23,258 INFO L93 Difference]: Finished difference Result 764 states and 1015 transitions. [2020-10-27 01:54:23,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-27 01:54:23,259 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 61 [2020-10-27 01:54:23,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:54:23,265 INFO L225 Difference]: With dead ends: 764 [2020-10-27 01:54:23,266 INFO L226 Difference]: Without dead ends: 471 [2020-10-27 01:54:23,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1693 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1501, Invalid=3901, Unknown=0, NotChecked=0, Total=5402 [2020-10-27 01:54:23,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-10-27 01:54:23,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 307. [2020-10-27 01:54:23,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-10-27 01:54:23,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 409 transitions. [2020-10-27 01:54:23,301 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 409 transitions. Word has length 61 [2020-10-27 01:54:23,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:54:23,301 INFO L481 AbstractCegarLoop]: Abstraction has 307 states and 409 transitions. [2020-10-27 01:54:23,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 01:54:23,302 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 409 transitions. [2020-10-27 01:54:23,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 01:54:23,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:54:23,303 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 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 01:54:23,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 01:54:23,303 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:54:23,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:54:23,303 INFO L82 PathProgramCache]: Analyzing trace with hash 961371840, now seen corresponding path program 6 times [2020-10-27 01:54:23,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:54:23,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494083380] [2020-10-27 01:54:23,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:54:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:23,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:23,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:23,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:23,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 01:54:23,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:54:23,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-27 01:54:23,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:23,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 01:54:23,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:54:23,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 01:54:23,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:23,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:54:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:23,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:23,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:23,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:54:23,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:23,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:54:23,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:23,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:23,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:23,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:54:23,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:23,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:54:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:23,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:23,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:23,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:54:23,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:23,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:54:23,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:23,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:23,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:23,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:54:23,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:23,938 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:54:23,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494083380] [2020-10-27 01:54:23,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:54:23,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 01:54:23,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791209139] [2020-10-27 01:54:23,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 01:54:23,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:54:23,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 01:54:23,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-10-27 01:54:23,940 INFO L87 Difference]: Start difference. First operand 307 states and 409 transitions. Second operand 18 states. [2020-10-27 01:54:24,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:54:24,751 INFO L93 Difference]: Finished difference Result 651 states and 871 transitions. [2020-10-27 01:54:24,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 01:54:24,752 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 61 [2020-10-27 01:54:24,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:54:24,754 INFO L225 Difference]: With dead ends: 651 [2020-10-27 01:54:24,754 INFO L226 Difference]: Without dead ends: 356 [2020-10-27 01:54:24,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=366, Invalid=690, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 01:54:24,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-10-27 01:54:24,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 323. [2020-10-27 01:54:24,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-10-27 01:54:24,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 429 transitions. [2020-10-27 01:54:24,806 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 429 transitions. Word has length 61 [2020-10-27 01:54:24,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:54:24,806 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 429 transitions. [2020-10-27 01:54:24,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 01:54:24,806 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 429 transitions. [2020-10-27 01:54:24,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 01:54:24,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:54:24,807 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 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 01:54:24,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 01:54:24,807 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:54:24,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:54:24,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1427417692, now seen corresponding path program 15 times [2020-10-27 01:54:24,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:54:24,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748234754] [2020-10-27 01:54:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:54:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:24,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:24,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:24,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:25,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:25,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:25,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:25,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 01:54:25,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:54:25,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-10-27 01:54:25,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:25,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 01:54:25,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:54:25,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 01:54:25,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:26,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:54:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:26,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:26,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:26,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:54:26,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:26,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:54:26,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:26,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:26,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:26,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:54:26,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:26,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:54:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:26,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:26,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:26,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:54:26,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:26,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:54:26,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:26,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:26,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:26,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:54:26,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:26,164 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:54:26,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748234754] [2020-10-27 01:54:26,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:54:26,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 01:54:26,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618841882] [2020-10-27 01:54:26,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 01:54:26,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:54:26,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 01:54:26,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2020-10-27 01:54:26,167 INFO L87 Difference]: Start difference. First operand 323 states and 429 transitions. Second operand 20 states. [2020-10-27 01:54:27,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:54:27,843 INFO L93 Difference]: Finished difference Result 760 states and 1020 transitions. [2020-10-27 01:54:27,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 01:54:27,843 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 64 [2020-10-27 01:54:27,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:54:27,846 INFO L225 Difference]: With dead ends: 760 [2020-10-27 01:54:27,846 INFO L226 Difference]: Without dead ends: 449 [2020-10-27 01:54:27,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=758, Invalid=1894, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 01:54:27,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-10-27 01:54:27,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 223. [2020-10-27 01:54:27,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-27 01:54:27,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 296 transitions. [2020-10-27 01:54:27,873 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 296 transitions. Word has length 64 [2020-10-27 01:54:27,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:54:27,873 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 296 transitions. [2020-10-27 01:54:27,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 01:54:27,873 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 296 transitions. [2020-10-27 01:54:27,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 01:54:27,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:54:27,874 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 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 01:54:27,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 01:54:27,874 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:54:27,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:54:27,875 INFO L82 PathProgramCache]: Analyzing trace with hash 2128482270, now seen corresponding path program 7 times [2020-10-27 01:54:27,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:54:27,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636364102] [2020-10-27 01:54:27,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:54:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:27,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:27,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:28,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:28,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 01:54:28,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:54:28,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-27 01:54:28,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:28,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 01:54:28,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:54:28,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 01:54:28,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:28,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:54:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:28,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:28,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:28,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:54:28,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:28,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:54:28,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:28,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:28,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:28,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:54:28,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:28,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:54:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:28,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:28,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:28,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:54:28,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:28,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:54:28,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:28,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:28,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:28,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:54:28,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:28,425 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:54:28,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636364102] [2020-10-27 01:54:28,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:54:28,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 01:54:28,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193732930] [2020-10-27 01:54:28,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 01:54:28,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:54:28,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 01:54:28,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=202, Unknown=0, NotChecked=0, Total=342 [2020-10-27 01:54:28,427 INFO L87 Difference]: Start difference. First operand 223 states and 296 transitions. Second operand 19 states. [2020-10-27 01:54:29,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:54:29,306 INFO L93 Difference]: Finished difference Result 463 states and 619 transitions. [2020-10-27 01:54:29,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 01:54:29,313 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 64 [2020-10-27 01:54:29,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:54:29,314 INFO L225 Difference]: With dead ends: 463 [2020-10-27 01:54:29,315 INFO L226 Difference]: Without dead ends: 252 [2020-10-27 01:54:29,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=414, Invalid=776, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 01:54:29,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-27 01:54:29,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 233. [2020-10-27 01:54:29,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-27 01:54:29,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 308 transitions. [2020-10-27 01:54:29,343 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 308 transitions. Word has length 64 [2020-10-27 01:54:29,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:54:29,343 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 308 transitions. [2020-10-27 01:54:29,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 01:54:29,343 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 308 transitions. [2020-10-27 01:54:29,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 01:54:29,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:54:29,345 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 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 01:54:29,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 01:54:29,345 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:54:29,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:54:29,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1240990594, now seen corresponding path program 16 times [2020-10-27 01:54:29,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:54:29,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515544281] [2020-10-27 01:54:29,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:54:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:29,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:29,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:29,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:29,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:29,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:30,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:30,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 01:54:30,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:54:30,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1245 [2020-10-27 01:54:30,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:30,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 01:54:30,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:54:30,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 01:54:30,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:30,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:54:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:30,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:30,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:30,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:54:30,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:30,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:54:30,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:30,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:30,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:30,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:54:30,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:30,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:54:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:30,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:30,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:30,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:54:30,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:30,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:54:30,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:30,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:30,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:30,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:54:30,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:30,984 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:54:30,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515544281] [2020-10-27 01:54:30,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:54:30,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 01:54:30,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541136733] [2020-10-27 01:54:30,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 01:54:30,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:54:30,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 01:54:30,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=223, Unknown=0, NotChecked=0, Total=380 [2020-10-27 01:54:30,986 INFO L87 Difference]: Start difference. First operand 233 states and 308 transitions. Second operand 20 states. [2020-10-27 01:54:31,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:54:31,942 INFO L93 Difference]: Finished difference Result 485 states and 647 transitions. [2020-10-27 01:54:31,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 01:54:31,943 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2020-10-27 01:54:31,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:54:31,944 INFO L225 Difference]: With dead ends: 485 [2020-10-27 01:54:31,944 INFO L226 Difference]: Without dead ends: 264 [2020-10-27 01:54:31,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=465, Invalid=867, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 01:54:31,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-27 01:54:31,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 245. [2020-10-27 01:54:31,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-10-27 01:54:31,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 324 transitions. [2020-10-27 01:54:31,973 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 324 transitions. Word has length 67 [2020-10-27 01:54:31,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:54:31,973 INFO L481 AbstractCegarLoop]: Abstraction has 245 states and 324 transitions. [2020-10-27 01:54:31,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 01:54:31,973 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 324 transitions. [2020-10-27 01:54:31,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 01:54:31,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:54:31,974 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:54:31,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 01:54:31,975 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:54:31,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:54:31,975 INFO L82 PathProgramCache]: Analyzing trace with hash 768560094, now seen corresponding path program 17 times [2020-10-27 01:54:31,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:54:31,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544396289] [2020-10-27 01:54:31,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:54:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:31,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:32,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:32,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:32,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:32,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:32,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:32,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:32,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:33,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:33,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 01:54:33,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 01:54:33,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1198 [2020-10-27 01:54:33,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:33,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 01:54:33,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:54:33,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 01:54:33,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:33,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:54:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:33,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:33,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:33,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:54:33,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:33,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:54:33,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:33,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:33,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:33,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:54:33,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:33,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:54:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:33,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:33,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:33,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:54:33,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:33,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:54:33,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:33,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:33,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:33,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:54:33,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:33,587 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:54:33,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544396289] [2020-10-27 01:54:33,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:54:33,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 01:54:33,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385380562] [2020-10-27 01:54:33,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 01:54:33,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:54:33,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 01:54:33,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=300, Unknown=0, NotChecked=0, Total=462 [2020-10-27 01:54:33,589 INFO L87 Difference]: Start difference. First operand 245 states and 324 transitions. Second operand 22 states. [2020-10-27 01:54:36,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:54:36,561 INFO L93 Difference]: Finished difference Result 656 states and 869 transitions. [2020-10-27 01:54:36,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-10-27 01:54:36,562 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 70 [2020-10-27 01:54:36,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:54:36,564 INFO L225 Difference]: With dead ends: 656 [2020-10-27 01:54:36,564 INFO L226 Difference]: Without dead ends: 423 [2020-10-27 01:54:36,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2539 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2179, Invalid=5653, Unknown=0, NotChecked=0, Total=7832 [2020-10-27 01:54:36,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-10-27 01:54:36,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 361. [2020-10-27 01:54:36,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-10-27 01:54:36,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 481 transitions. [2020-10-27 01:54:36,603 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 481 transitions. Word has length 70 [2020-10-27 01:54:36,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:54:36,603 INFO L481 AbstractCegarLoop]: Abstraction has 361 states and 481 transitions. [2020-10-27 01:54:36,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 01:54:36,603 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 481 transitions. [2020-10-27 01:54:36,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 01:54:36,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:54:36,604 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 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 01:54:36,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 01:54:36,605 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:54:36,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:54:36,605 INFO L82 PathProgramCache]: Analyzing trace with hash 458507422, now seen corresponding path program 8 times [2020-10-27 01:54:36,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:54:36,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506427170] [2020-10-27 01:54:36,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:54:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:36,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:36,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:36,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:36,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 01:54:36,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:54:36,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-27 01:54:36,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:36,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 01:54:36,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:54:36,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 01:54:36,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:37,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:54:37,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:37,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:37,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:37,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:54:37,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:37,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:54:37,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:37,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:37,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:37,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:54:37,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:37,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:54:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:37,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:37,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:37,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:54:37,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:37,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:54:37,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:37,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:37,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:37,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:54:37,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:54:37,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506427170] [2020-10-27 01:54:37,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:54:37,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 01:54:37,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363627106] [2020-10-27 01:54:37,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 01:54:37,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:54:37,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 01:54:37,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2020-10-27 01:54:37,310 INFO L87 Difference]: Start difference. First operand 361 states and 481 transitions. Second operand 21 states. [2020-10-27 01:54:38,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:54:38,091 INFO L93 Difference]: Finished difference Result 759 states and 1015 transitions. [2020-10-27 01:54:38,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 01:54:38,092 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 70 [2020-10-27 01:54:38,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:54:38,095 INFO L225 Difference]: With dead ends: 759 [2020-10-27 01:54:38,095 INFO L226 Difference]: Without dead ends: 410 [2020-10-27 01:54:38,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=519, Invalid=963, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 01:54:38,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-10-27 01:54:38,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 377. [2020-10-27 01:54:38,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-27 01:54:38,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 501 transitions. [2020-10-27 01:54:38,138 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 501 transitions. Word has length 70 [2020-10-27 01:54:38,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:54:38,138 INFO L481 AbstractCegarLoop]: Abstraction has 377 states and 501 transitions. [2020-10-27 01:54:38,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 01:54:38,139 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 501 transitions. [2020-10-27 01:54:38,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-27 01:54:38,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:54:38,141 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 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 01:54:38,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 01:54:38,141 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:54:38,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:54:38,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1439469502, now seen corresponding path program 18 times [2020-10-27 01:54:38,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:54:38,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980963017] [2020-10-27 01:54:38,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:54:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:38,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:38,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:38,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:38,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:38,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:39,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:39,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 01:54:39,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:54:39,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1179 [2020-10-27 01:54:39,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:39,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 01:54:39,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:54:39,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 01:54:39,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:39,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:54:39,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:39,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:39,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:39,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:54:39,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:39,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:54:39,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:39,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:39,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:39,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:54:39,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:39,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:54:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:39,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:39,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:39,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:54:39,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:39,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:54:39,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:39,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:39,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:39,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:54:39,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:39,749 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:54:39,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980963017] [2020-10-27 01:54:39,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:54:39,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 01:54:39,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287298717] [2020-10-27 01:54:39,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 01:54:39,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:54:39,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 01:54:39,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=268, Unknown=0, NotChecked=0, Total=462 [2020-10-27 01:54:39,751 INFO L87 Difference]: Start difference. First operand 377 states and 501 transitions. Second operand 22 states. [2020-10-27 01:54:40,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:54:40,864 INFO L93 Difference]: Finished difference Result 793 states and 1059 transitions. [2020-10-27 01:54:40,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 01:54:40,865 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 73 [2020-10-27 01:54:40,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:54:40,867 INFO L225 Difference]: With dead ends: 793 [2020-10-27 01:54:40,867 INFO L226 Difference]: Without dead ends: 428 [2020-10-27 01:54:40,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=576, Invalid=1064, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 01:54:40,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2020-10-27 01:54:40,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 395. [2020-10-27 01:54:40,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-10-27 01:54:40,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 525 transitions. [2020-10-27 01:54:40,906 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 525 transitions. Word has length 73 [2020-10-27 01:54:40,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:54:40,906 INFO L481 AbstractCegarLoop]: Abstraction has 395 states and 525 transitions. [2020-10-27 01:54:40,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 01:54:40,906 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 525 transitions. [2020-10-27 01:54:40,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 01:54:40,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:54:40,907 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:54:40,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 01:54:40,908 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:54:40,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:54:40,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1971654498, now seen corresponding path program 19 times [2020-10-27 01:54:40,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:54:40,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727225445] [2020-10-27 01:54:40,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:54:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:40,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:40,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:41,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:41,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:41,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:41,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:41,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:41,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:42,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:42,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 01:54:42,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 01:54:42,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1413 [2020-10-27 01:54:42,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:42,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 01:54:42,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:54:42,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 01:54:42,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:42,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:54:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:42,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:42,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:42,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:54:42,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:42,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:54:42,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:54:42,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:42,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:54:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:42,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:42,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:42,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:54:42,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:42,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:54:42,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:42,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:42,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:42,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:54:42,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:42,810 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:54:42,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727225445] [2020-10-27 01:54:42,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:54:42,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 01:54:42,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677975925] [2020-10-27 01:54:42,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 01:54:42,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:54:42,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 01:54:42,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=353, Unknown=0, NotChecked=0, Total=552 [2020-10-27 01:54:42,812 INFO L87 Difference]: Start difference. First operand 395 states and 525 transitions. Second operand 24 states. [2020-10-27 01:54:45,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:54:45,014 INFO L93 Difference]: Finished difference Result 928 states and 1244 transitions. [2020-10-27 01:54:45,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 01:54:45,022 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 76 [2020-10-27 01:54:45,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:54:45,025 INFO L225 Difference]: With dead ends: 928 [2020-10-27 01:54:45,025 INFO L226 Difference]: Without dead ends: 545 [2020-10-27 01:54:45,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1161, Invalid=2745, Unknown=0, NotChecked=0, Total=3906 [2020-10-27 01:54:45,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-10-27 01:54:45,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 271. [2020-10-27 01:54:45,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-27 01:54:45,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 360 transitions. [2020-10-27 01:54:45,062 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 360 transitions. Word has length 76 [2020-10-27 01:54:45,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:54:45,063 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 360 transitions. [2020-10-27 01:54:45,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 01:54:45,063 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 360 transitions. [2020-10-27 01:54:45,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 01:54:45,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:54:45,064 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 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 01:54:45,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 01:54:45,064 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:54:45,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:54:45,065 INFO L82 PathProgramCache]: Analyzing trace with hash 2013260126, now seen corresponding path program 9 times [2020-10-27 01:54:45,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:54:45,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401337458] [2020-10-27 01:54:45,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:54:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:45,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:45,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:45,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:45,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 01:54:45,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:54:45,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-27 01:54:45,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 01:54:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:54:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 01:54:45,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:45,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:54:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:45,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:45,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:45,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:54:45,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:45,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:54:45,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:45,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:45,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:45,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:54:45,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:45,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:54:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:45,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:45,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:45,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:54:45,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:45,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:54:45,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:45,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:45,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:45,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:54:45,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:45,860 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:54:45,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401337458] [2020-10-27 01:54:45,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:54:45,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 01:54:45,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130508904] [2020-10-27 01:54:45,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 01:54:45,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:54:45,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 01:54:45,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=292, Unknown=0, NotChecked=0, Total=506 [2020-10-27 01:54:45,862 INFO L87 Difference]: Start difference. First operand 271 states and 360 transitions. Second operand 23 states. [2020-10-27 01:54:47,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:54:47,038 INFO L93 Difference]: Finished difference Result 559 states and 747 transitions. [2020-10-27 01:54:47,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 01:54:47,039 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 76 [2020-10-27 01:54:47,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:54:47,041 INFO L225 Difference]: With dead ends: 559 [2020-10-27 01:54:47,041 INFO L226 Difference]: Without dead ends: 300 [2020-10-27 01:54:47,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=636, Invalid=1170, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 01:54:47,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-27 01:54:47,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 281. [2020-10-27 01:54:47,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-10-27 01:54:47,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 372 transitions. [2020-10-27 01:54:47,075 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 372 transitions. Word has length 76 [2020-10-27 01:54:47,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:54:47,076 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 372 transitions. [2020-10-27 01:54:47,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 01:54:47,076 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 372 transitions. [2020-10-27 01:54:47,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 01:54:47,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:54:47,077 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 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 01:54:47,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 01:54:47,077 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:54:47,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:54:47,078 INFO L82 PathProgramCache]: Analyzing trace with hash -2145012994, now seen corresponding path program 20 times [2020-10-27 01:54:47,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:54:47,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850629711] [2020-10-27 01:54:47,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:54:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:47,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:47,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:47,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:47,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:47,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:48,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:48,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 01:54:48,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:54:48,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1072 [2020-10-27 01:54:48,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:48,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 01:54:48,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:54:48,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 01:54:48,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:48,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:54:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:48,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:48,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:48,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:54:48,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:48,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:54:48,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:48,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:48,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:48,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:54:48,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:48,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:54:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:48,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:48,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:48,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:54:48,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:48,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:54:48,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:48,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:48,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:48,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:54:48,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:48,657 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:54:48,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850629711] [2020-10-27 01:54:48,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:54:48,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 01:54:48,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227785708] [2020-10-27 01:54:48,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 01:54:48,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:54:48,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 01:54:48,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=382, Unknown=0, NotChecked=0, Total=600 [2020-10-27 01:54:48,659 INFO L87 Difference]: Start difference. First operand 281 states and 372 transitions. Second operand 25 states. [2020-10-27 01:54:50,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:54:50,602 INFO L93 Difference]: Finished difference Result 702 states and 940 transitions. [2020-10-27 01:54:50,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-27 01:54:50,603 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 79 [2020-10-27 01:54:50,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:54:50,605 INFO L225 Difference]: With dead ends: 702 [2020-10-27 01:54:50,605 INFO L226 Difference]: Without dead ends: 433 [2020-10-27 01:54:50,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1303, Invalid=3119, Unknown=0, NotChecked=0, Total=4422 [2020-10-27 01:54:50,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-10-27 01:54:50,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 283. [2020-10-27 01:54:50,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-10-27 01:54:50,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 376 transitions. [2020-10-27 01:54:50,643 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 376 transitions. Word has length 79 [2020-10-27 01:54:50,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:54:50,644 INFO L481 AbstractCegarLoop]: Abstraction has 283 states and 376 transitions. [2020-10-27 01:54:50,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 01:54:50,644 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 376 transitions. [2020-10-27 01:54:50,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 01:54:50,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:54:50,645 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 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 01:54:50,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 01:54:50,645 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:54:50,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:54:50,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1443948416, now seen corresponding path program 10 times [2020-10-27 01:54:50,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:54:50,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429668740] [2020-10-27 01:54:50,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:54:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:50,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:50,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:50,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:50,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 01:54:50,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:54:50,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-27 01:54:50,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:50,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 01:54:50,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:54:50,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 01:54:50,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:51,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:54:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:51,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:51,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:51,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:54:51,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:51,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:54:51,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:54:51,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:51,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:54:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:51,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:51,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:51,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:54:51,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:51,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:54:51,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:51,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:51,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:51,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:54:51,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:51,472 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:54:51,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429668740] [2020-10-27 01:54:51,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:54:51,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 01:54:51,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011263055] [2020-10-27 01:54:51,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 01:54:51,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:54:51,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 01:54:51,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=317, Unknown=0, NotChecked=0, Total=552 [2020-10-27 01:54:51,473 INFO L87 Difference]: Start difference. First operand 283 states and 376 transitions. Second operand 24 states. [2020-10-27 01:54:52,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:54:52,432 INFO L93 Difference]: Finished difference Result 573 states and 765 transitions. [2020-10-27 01:54:52,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 01:54:52,433 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 79 [2020-10-27 01:54:52,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:54:52,434 INFO L225 Difference]: With dead ends: 573 [2020-10-27 01:54:52,434 INFO L226 Difference]: Without dead ends: 302 [2020-10-27 01:54:52,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=699, Invalid=1281, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 01:54:52,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-27 01:54:52,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 293. [2020-10-27 01:54:52,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-10-27 01:54:52,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 388 transitions. [2020-10-27 01:54:52,473 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 388 transitions. Word has length 79 [2020-10-27 01:54:52,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:54:52,473 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 388 transitions. [2020-10-27 01:54:52,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 01:54:52,474 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 388 transitions. [2020-10-27 01:54:52,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 01:54:52,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:54:52,475 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 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 01:54:52,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 01:54:52,475 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:54:52,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:54:52,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1766037660, now seen corresponding path program 21 times [2020-10-27 01:54:52,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:54:52,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013128356] [2020-10-27 01:54:52,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:54:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:52,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:52,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:52,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:52,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:52,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:53,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:53,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 01:54:53,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:54:53,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 839 [2020-10-27 01:54:53,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:53,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 01:54:53,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:54:53,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 01:54:53,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:53,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:54:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:53,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:53,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:53,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:54:53,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:53,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:54:53,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:53,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:53,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:53,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:54:53,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:53,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:54:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:53,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:53,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:53,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:54:53,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:53,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:54:53,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:53,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:53,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:53,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:54:53,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 442 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:54:53,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013128356] [2020-10-27 01:54:53,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:54:53,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 01:54:53,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107718758] [2020-10-27 01:54:53,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 01:54:53,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:54:53,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 01:54:53,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=496, Unknown=0, NotChecked=0, Total=702 [2020-10-27 01:54:53,923 INFO L87 Difference]: Start difference. First operand 293 states and 388 transitions. Second operand 27 states. [2020-10-27 01:54:57,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:54:57,897 INFO L93 Difference]: Finished difference Result 687 states and 886 transitions. [2020-10-27 01:54:57,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-10-27 01:54:57,898 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 82 [2020-10-27 01:54:57,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:54:57,900 INFO L225 Difference]: With dead ends: 687 [2020-10-27 01:54:57,900 INFO L226 Difference]: Without dead ends: 324 [2020-10-27 01:54:57,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2468 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2869, Invalid=8261, Unknown=0, NotChecked=0, Total=11130 [2020-10-27 01:54:57,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-27 01:54:57,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 291. [2020-10-27 01:54:57,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-10-27 01:54:57,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 342 transitions. [2020-10-27 01:54:57,945 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 342 transitions. Word has length 82 [2020-10-27 01:54:57,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:54:57,946 INFO L481 AbstractCegarLoop]: Abstraction has 291 states and 342 transitions. [2020-10-27 01:54:57,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 01:54:57,946 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 342 transitions. [2020-10-27 01:54:57,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 01:54:57,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:54:57,947 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 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 01:54:57,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 01:54:57,949 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:54:57,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:54:57,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1827865058, now seen corresponding path program 11 times [2020-10-27 01:54:57,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:54:57,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544794569] [2020-10-27 01:54:57,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:54:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:57,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:58,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:58,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 01:54:58,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:58,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 01:54:58,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:58,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:54:58,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 01:54:58,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 01:54:58,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:58,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:54:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:58,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:58,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:58,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:54:58,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:58,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:54:58,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:58,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:54:58,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:58,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:54:58,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:58,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:54:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:58,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:58,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:54:58,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:54:58,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:54:58,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 01:54:58,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:54:58,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:54:58,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:54:58,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:54:58,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:54:58,079 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-27 01:54:58,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544794569] [2020-10-27 01:54:58,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:54:58,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:54:58,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675767756] [2020-10-27 01:54:58,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:54:58,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:54:58,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:54:58,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:54:58,081 INFO L87 Difference]: Start difference. First operand 291 states and 342 transitions. Second operand 4 states. [2020-10-27 01:54:58,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:54:58,211 INFO L93 Difference]: Finished difference Result 502 states and 585 transitions. [2020-10-27 01:54:58,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 01:54:58,217 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-10-27 01:54:58,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:54:58,219 INFO L225 Difference]: With dead ends: 502 [2020-10-27 01:54:58,219 INFO L226 Difference]: Without dead ends: 351 [2020-10-27 01:54:58,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:54:58,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-27 01:54:58,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 291. [2020-10-27 01:54:58,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-10-27 01:54:58,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 338 transitions. [2020-10-27 01:54:58,249 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 338 transitions. Word has length 82 [2020-10-27 01:54:58,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:54:58,249 INFO L481 AbstractCegarLoop]: Abstraction has 291 states and 338 transitions. [2020-10-27 01:54:58,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:54:58,249 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 338 transitions. [2020-10-27 01:54:58,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 01:54:58,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:54:58,250 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 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 01:54:58,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 01:54:58,251 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:54:58,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:54:58,251 INFO L82 PathProgramCache]: Analyzing trace with hash -2056661258, now seen corresponding path program 1 times [2020-10-27 01:54:58,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:54:58,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373195769] [2020-10-27 01:54:58,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:54:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:54:58,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:58,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:58,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:58,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:54:59,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:03,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:03,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 01:55:03,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:55:03,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 01:55:03,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:03,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 01:55:03,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:55:03,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 01:55:03,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:03,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:55:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:03,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:03,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:03,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:55:03,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:03,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:55:03,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:03,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:55:03,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:03,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:55:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:03,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:03,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:03,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:03,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:03,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:55:03,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:03,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:55:03,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:03,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:55:03,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:03,856 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 553 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:55:03,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373195769] [2020-10-27 01:55:03,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:55:03,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 01:55:03,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257243934] [2020-10-27 01:55:03,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 01:55:03,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:55:03,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 01:55:03,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=461, Unknown=0, NotChecked=0, Total=702 [2020-10-27 01:55:03,858 INFO L87 Difference]: Start difference. First operand 291 states and 338 transitions. Second operand 27 states. [2020-10-27 01:55:05,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:55:05,290 INFO L93 Difference]: Finished difference Result 965 states and 1201 transitions. [2020-10-27 01:55:05,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 01:55:05,290 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 83 [2020-10-27 01:55:05,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:55:05,293 INFO L225 Difference]: With dead ends: 965 [2020-10-27 01:55:05,293 INFO L226 Difference]: Without dead ends: 835 [2020-10-27 01:55:05,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=770, Invalid=1882, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 01:55:05,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2020-10-27 01:55:05,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 835. [2020-10-27 01:55:05,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 835 states. [2020-10-27 01:55:05,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1032 transitions. [2020-10-27 01:55:05,466 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1032 transitions. Word has length 83 [2020-10-27 01:55:05,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:55:05,467 INFO L481 AbstractCegarLoop]: Abstraction has 835 states and 1032 transitions. [2020-10-27 01:55:05,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 01:55:05,467 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1032 transitions. [2020-10-27 01:55:05,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 01:55:05,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:55:05,469 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 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 01:55:05,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 01:55:05,469 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:55:05,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:55:05,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1745679864, now seen corresponding path program 1 times [2020-10-27 01:55:05,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:55:05,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040672020] [2020-10-27 01:55:05,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:55:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:05,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:05,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:05,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:06,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:07,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:07,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 01:55:07,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:55:07,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1698 [2020-10-27 01:55:07,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:07,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 01:55:07,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:55:07,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 01:55:07,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:08,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:55:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:08,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:08,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:08,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:55:08,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:08,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:55:08,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:08,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:08,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:08,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:55:08,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:08,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:55:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:08,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:08,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:08,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:08,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:08,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:55:08,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:08,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:55:08,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:08,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:55:08,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:08,213 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 478 proven. 110 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 01:55:08,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040672020] [2020-10-27 01:55:08,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:55:08,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 01:55:08,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029689013] [2020-10-27 01:55:08,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 01:55:08,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:55:08,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 01:55:08,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=737, Unknown=0, NotChecked=0, Total=992 [2020-10-27 01:55:08,215 INFO L87 Difference]: Start difference. First operand 835 states and 1032 transitions. Second operand 32 states. [2020-10-27 01:55:10,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:55:10,706 INFO L93 Difference]: Finished difference Result 1407 states and 1759 transitions. [2020-10-27 01:55:10,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 01:55:10,707 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 83 [2020-10-27 01:55:10,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:55:10,713 INFO L225 Difference]: With dead ends: 1407 [2020-10-27 01:55:10,713 INFO L226 Difference]: Without dead ends: 1404 [2020-10-27 01:55:10,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=925, Invalid=3107, Unknown=0, NotChecked=0, Total=4032 [2020-10-27 01:55:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2020-10-27 01:55:11,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1393. [2020-10-27 01:55:11,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1393 states. [2020-10-27 01:55:11,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1743 transitions. [2020-10-27 01:55:11,062 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1743 transitions. Word has length 83 [2020-10-27 01:55:11,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:55:11,062 INFO L481 AbstractCegarLoop]: Abstraction has 1393 states and 1743 transitions. [2020-10-27 01:55:11,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 01:55:11,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1743 transitions. [2020-10-27 01:55:11,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 01:55:11,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:55:11,065 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 18, 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 01:55:11,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-27 01:55:11,065 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:55:11,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:55:11,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1013712438, now seen corresponding path program 2 times [2020-10-27 01:55:11,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:55:11,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819534683] [2020-10-27 01:55:11,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:55:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:11,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:11,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:11,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:12,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:12,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 01:55:12,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:55:12,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1269 [2020-10-27 01:55:12,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:12,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 01:55:12,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:55:12,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 01:55:12,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:13,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:55:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:13,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:13,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:13,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:55:13,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:13,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:55:13,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:13,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:13,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:13,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:55:13,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:13,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:55:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:13,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:13,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:13,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:13,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:13,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:55:13,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:13,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:13,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:13,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:13,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:13,905 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 495 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:55:13,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819534683] [2020-10-27 01:55:13,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:55:13,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 01:55:13,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789724990] [2020-10-27 01:55:13,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 01:55:13,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:55:13,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 01:55:13,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=578, Unknown=0, NotChecked=0, Total=870 [2020-10-27 01:55:13,907 INFO L87 Difference]: Start difference. First operand 1393 states and 1743 transitions. Second operand 30 states. [2020-10-27 01:55:16,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:55:16,382 INFO L93 Difference]: Finished difference Result 2473 states and 3073 transitions. [2020-10-27 01:55:16,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-27 01:55:16,383 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 83 [2020-10-27 01:55:16,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:55:16,385 INFO L225 Difference]: With dead ends: 2473 [2020-10-27 01:55:16,385 INFO L226 Difference]: Without dead ends: 299 [2020-10-27 01:55:16,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=964, Invalid=2342, Unknown=0, NotChecked=0, Total=3306 [2020-10-27 01:55:16,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-27 01:55:16,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 240. [2020-10-27 01:55:16,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-27 01:55:16,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 251 transitions. [2020-10-27 01:55:16,408 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 251 transitions. Word has length 83 [2020-10-27 01:55:16,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:55:16,408 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 251 transitions. [2020-10-27 01:55:16,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 01:55:16,409 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 251 transitions. [2020-10-27 01:55:16,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 01:55:16,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:55:16,409 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 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 01:55:16,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-27 01:55:16,410 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:55:16,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:55:16,410 INFO L82 PathProgramCache]: Analyzing trace with hash -938395722, now seen corresponding path program 1 times [2020-10-27 01:55:16,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:55:16,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762810437] [2020-10-27 01:55:16,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:55:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:16,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:16,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:16,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:16,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:16,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:16,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:16,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:16,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:16,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:16,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:16,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:16,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:17,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:17,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:17,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:18,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:18,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:18,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:18,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:19,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:21,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:21,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 01:55:21,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-27 01:55:21,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 01:55:21,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:21,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:55:21,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:55:21,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 01:55:21,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:21,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:55:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:21,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:21,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:21,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:55:21,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:21,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:55:21,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:21,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:21,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:21,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:55:21,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:21,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:55:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:21,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:21,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:21,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:21,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:21,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:55:21,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:21,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:21,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:21,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:21,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-27 01:55:21,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762810437] [2020-10-27 01:55:21,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:55:21,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:55:21,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007199390] [2020-10-27 01:55:21,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:55:21,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:55:21,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:55:21,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:55:21,531 INFO L87 Difference]: Start difference. First operand 240 states and 251 transitions. Second operand 6 states. [2020-10-27 01:55:21,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:55:21,766 INFO L93 Difference]: Finished difference Result 536 states and 562 transitions. [2020-10-27 01:55:21,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 01:55:21,767 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-10-27 01:55:21,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:55:21,769 INFO L225 Difference]: With dead ends: 536 [2020-10-27 01:55:21,769 INFO L226 Difference]: Without dead ends: 385 [2020-10-27 01:55:21,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:55:21,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-10-27 01:55:21,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 312. [2020-10-27 01:55:21,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-10-27 01:55:21,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 326 transitions. [2020-10-27 01:55:21,799 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 326 transitions. Word has length 83 [2020-10-27 01:55:21,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:55:21,799 INFO L481 AbstractCegarLoop]: Abstraction has 312 states and 326 transitions. [2020-10-27 01:55:21,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:55:21,799 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 326 transitions. [2020-10-27 01:55:21,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 01:55:21,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:55:21,801 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:55:21,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-27 01:55:21,801 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:55:21,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:55:21,802 INFO L82 PathProgramCache]: Analyzing trace with hash -739657584, now seen corresponding path program 1 times [2020-10-27 01:55:21,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:55:21,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526072126] [2020-10-27 01:55:21,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:55:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:21,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:21,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:21,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:21,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:21,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:21,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:22,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:22,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:22,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:22,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:22,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:22,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:24,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:24,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:24,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:24,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:24,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:24,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:24,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:24,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:25,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:25,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:26,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:26,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:26,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:26,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:26,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 01:55:26,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-27 01:55:26,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-27 01:55:26,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:26,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:55:26,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:55:26,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-27 01:55:26,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:26,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:55:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:26,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:26,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:26,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:55:26,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:26,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:55:26,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:26,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:26,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:26,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:55:26,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:26,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:55:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:26,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:26,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:26,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:26,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:26,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:55:26,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:26,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:27,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 01:55:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:27,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:27,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:27,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:27,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:27,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:55:27,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:27,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:27,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:27,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:27,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:27,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2429 backedges. 3 proven. 1246 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2020-10-27 01:55:27,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526072126] [2020-10-27 01:55:27,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:55:27,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 01:55:27,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071790964] [2020-10-27 01:55:27,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:55:27,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:55:27,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:55:27,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:55:27,057 INFO L87 Difference]: Start difference. First operand 312 states and 326 transitions. Second operand 7 states. [2020-10-27 01:55:27,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:55:27,315 INFO L93 Difference]: Finished difference Result 608 states and 637 transitions. [2020-10-27 01:55:27,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:55:27,316 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 154 [2020-10-27 01:55:27,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:55:27,318 INFO L225 Difference]: With dead ends: 608 [2020-10-27 01:55:27,318 INFO L226 Difference]: Without dead ends: 457 [2020-10-27 01:55:27,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:55:27,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-10-27 01:55:27,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 384. [2020-10-27 01:55:27,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2020-10-27 01:55:27,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 401 transitions. [2020-10-27 01:55:27,344 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 401 transitions. Word has length 154 [2020-10-27 01:55:27,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:55:27,345 INFO L481 AbstractCegarLoop]: Abstraction has 384 states and 401 transitions. [2020-10-27 01:55:27,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:55:27,345 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 401 transitions. [2020-10-27 01:55:27,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-27 01:55:27,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:55:27,347 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:55:27,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-27 01:55:27,347 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:55:27,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:55:27,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1394556534, now seen corresponding path program 2 times [2020-10-27 01:55:27,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:55:27,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775399037] [2020-10-27 01:55:27,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:55:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:27,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:27,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:27,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:27,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:27,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:27,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:27,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:27,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:27,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:28,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:28,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:28,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:28,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:28,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:28,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:28,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:31,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:32,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:32,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-27 01:55:32,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 01:55:32,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 01:55:32,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:32,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:55:32,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:55:32,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-27 01:55:32,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:32,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:55:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:32,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:32,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:32,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:55:32,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:32,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:55:32,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:32,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:32,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:32,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:55:32,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:32,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:55:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:32,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:32,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:32,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:32,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:32,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:55:32,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:32,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:32,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:32,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:32,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:32,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 01:55:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:32,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:32,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:32,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:32,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:32,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:55:32,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:32,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:32,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:32,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:32,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:32,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-27 01:55:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:32,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:32,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:32,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:32,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:32,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:55:32,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:32,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:32,592 INFO L134 CoverageAnalysis]: Checked inductivity of 5519 backedges. 6 proven. 3739 refuted. 0 times theorem prover too weak. 1774 trivial. 0 not checked. [2020-10-27 01:55:32,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775399037] [2020-10-27 01:55:32,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:55:32,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 01:55:32,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908885357] [2020-10-27 01:55:32,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 01:55:32,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:55:32,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 01:55:32,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:55:32,594 INFO L87 Difference]: Start difference. First operand 384 states and 401 transitions. Second operand 8 states. [2020-10-27 01:55:32,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:55:32,901 INFO L93 Difference]: Finished difference Result 680 states and 712 transitions. [2020-10-27 01:55:32,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 01:55:32,901 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2020-10-27 01:55:32,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:55:32,904 INFO L225 Difference]: With dead ends: 680 [2020-10-27 01:55:32,904 INFO L226 Difference]: Without dead ends: 529 [2020-10-27 01:55:32,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-27 01:55:32,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-10-27 01:55:32,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 456. [2020-10-27 01:55:32,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-10-27 01:55:32,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 476 transitions. [2020-10-27 01:55:32,937 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 476 transitions. Word has length 225 [2020-10-27 01:55:32,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:55:32,937 INFO L481 AbstractCegarLoop]: Abstraction has 456 states and 476 transitions. [2020-10-27 01:55:32,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 01:55:32,938 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 476 transitions. [2020-10-27 01:55:32,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-27 01:55:32,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:55:32,940 INFO L422 BasicCegarLoop]: trace histogram [80, 80, 80, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:55:32,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-27 01:55:32,940 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:55:32,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:55:32,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1163958736, now seen corresponding path program 3 times [2020-10-27 01:55:32,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:55:32,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140924476] [2020-10-27 01:55:32,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:55:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:32,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:33,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:33,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:33,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:33,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:33,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:33,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:33,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:33,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:33,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:33,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:33,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:33,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:34,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:34,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:34,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:35,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:36,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:36,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:37,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:37,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:37,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:37,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-27 01:55:37,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-27 01:55:37,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 01:55:37,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:37,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:55:37,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:55:37,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 300 [2020-10-27 01:55:37,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:38,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:55:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:38,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:38,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:38,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:55:38,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:38,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:55:38,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:38,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:38,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:38,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:55:38,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:38,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:55:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:38,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:38,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:38,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:38,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:38,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:55:38,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:38,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:38,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:38,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:38,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:38,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 01:55:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:38,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:38,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:38,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:38,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:38,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:55:38,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:38,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:38,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:38,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:38,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:38,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-27 01:55:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:38,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:38,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:38,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:38,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:38,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:55:38,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:38,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:38,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:38,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:38,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:38,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-27 01:55:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:38,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:38,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:38,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:38,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:38,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:55:38,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:38,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:38,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:38,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:38,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:38,291 INFO L134 CoverageAnalysis]: Checked inductivity of 9860 backedges. 9 proven. 7479 refuted. 0 times theorem prover too weak. 2372 trivial. 0 not checked. [2020-10-27 01:55:38,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140924476] [2020-10-27 01:55:38,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:55:38,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 01:55:38,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068546197] [2020-10-27 01:55:38,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 01:55:38,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:55:38,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 01:55:38,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:55:38,293 INFO L87 Difference]: Start difference. First operand 456 states and 476 transitions. Second operand 9 states. [2020-10-27 01:55:38,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:55:38,642 INFO L93 Difference]: Finished difference Result 752 states and 787 transitions. [2020-10-27 01:55:38,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 01:55:38,643 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 296 [2020-10-27 01:55:38,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:55:38,645 INFO L225 Difference]: With dead ends: 752 [2020-10-27 01:55:38,646 INFO L226 Difference]: Without dead ends: 601 [2020-10-27 01:55:38,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-27 01:55:38,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-10-27 01:55:38,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 528. [2020-10-27 01:55:38,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-10-27 01:55:38,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 551 transitions. [2020-10-27 01:55:38,682 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 551 transitions. Word has length 296 [2020-10-27 01:55:38,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:55:38,683 INFO L481 AbstractCegarLoop]: Abstraction has 528 states and 551 transitions. [2020-10-27 01:55:38,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 01:55:38,683 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 551 transitions. [2020-10-27 01:55:38,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-10-27 01:55:38,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:55:38,686 INFO L422 BasicCegarLoop]: trace histogram [100, 100, 100, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:55:38,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-27 01:55:38,686 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:55:38,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:55:38,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1552839990, now seen corresponding path program 4 times [2020-10-27 01:55:38,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:55:38,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407377313] [2020-10-27 01:55:38,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:55:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:38,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:38,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:39,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:39,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:39,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:39,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:39,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:39,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:39,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:40,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:40,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:40,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:42,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:42,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:43,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:43,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:43,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 387 [2020-10-27 01:55:43,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 01:55:43,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 01:55:43,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:43,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:55:43,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:55:43,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 373 [2020-10-27 01:55:43,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:43,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:55:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:43,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:43,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:43,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:55:43,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:43,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:55:43,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:43,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:43,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:43,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:55:43,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:43,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:55:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:43,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:43,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:43,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:43,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:43,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:55:43,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:43,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:43,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:43,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:43,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:43,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 01:55:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:43,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:43,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:43,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:43,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:43,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:55:43,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:43,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:43,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:43,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:43,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:43,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-27 01:55:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:43,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:43,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:43,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:43,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:43,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:55:43,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:43,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:43,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:43,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:43,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:43,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-27 01:55:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:43,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:43,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:43,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:43,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:43,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:55:43,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:43,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:43,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:43,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:43,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:43,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-27 01:55:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:43,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:43,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:43,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:43,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:43,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:55:43,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:43,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:43,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:43,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:43,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:44,370 INFO L134 CoverageAnalysis]: Checked inductivity of 15452 backedges. 12 proven. 12466 refuted. 0 times theorem prover too weak. 2974 trivial. 0 not checked. [2020-10-27 01:55:44,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407377313] [2020-10-27 01:55:44,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:55:44,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 01:55:44,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109025588] [2020-10-27 01:55:44,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 01:55:44,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:55:44,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 01:55:44,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:55:44,372 INFO L87 Difference]: Start difference. First operand 528 states and 551 transitions. Second operand 10 states. [2020-10-27 01:55:44,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:55:44,762 INFO L93 Difference]: Finished difference Result 824 states and 862 transitions. [2020-10-27 01:55:44,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 01:55:44,763 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 367 [2020-10-27 01:55:44,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:55:44,766 INFO L225 Difference]: With dead ends: 824 [2020-10-27 01:55:44,767 INFO L226 Difference]: Without dead ends: 673 [2020-10-27 01:55:44,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-27 01:55:44,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2020-10-27 01:55:44,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 600. [2020-10-27 01:55:44,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-10-27 01:55:44,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 626 transitions. [2020-10-27 01:55:44,811 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 626 transitions. Word has length 367 [2020-10-27 01:55:44,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:55:44,812 INFO L481 AbstractCegarLoop]: Abstraction has 600 states and 626 transitions. [2020-10-27 01:55:44,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 01:55:44,813 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 626 transitions. [2020-10-27 01:55:44,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2020-10-27 01:55:44,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:55:44,816 INFO L422 BasicCegarLoop]: trace histogram [120, 120, 120, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:55:44,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-27 01:55:44,817 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:55:44,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:55:44,817 INFO L82 PathProgramCache]: Analyzing trace with hash 54545168, now seen corresponding path program 5 times [2020-10-27 01:55:44,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:55:44,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089251537] [2020-10-27 01:55:44,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:55:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:44,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:45,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:45,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:45,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:45,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:45,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:45,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:45,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:45,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:45,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:45,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:45,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:45,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:45,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:46,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:46,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:46,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:46,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:46,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:46,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:49,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:49,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 460 [2020-10-27 01:55:49,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-27 01:55:49,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 01:55:49,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:49,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 01:55:49,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:55:49,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 446 [2020-10-27 01:55:49,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:50,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:55:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:50,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:50,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:50,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:55:50,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:50,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:55:50,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:50,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:50,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:50,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:55:50,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:50,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:55:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:50,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:50,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:50,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:50,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:50,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:55:50,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:50,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:50,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:50,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:50,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:50,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 01:55:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:50,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:50,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:50,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:50,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:50,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:55:50,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:50,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:50,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:50,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:50,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:50,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-27 01:55:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:50,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:50,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:50,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:50,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:50,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:55:50,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:50,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:50,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:50,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:50,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:50,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-27 01:55:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:50,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:50,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:50,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:50,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:50,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:55:50,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:50,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:50,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-27 01:55:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:50,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:50,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:50,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:50,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:50,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:55:50,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:50,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:50,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:50,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:50,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:50,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-27 01:55:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:50,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:50,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:50,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:50,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:50,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:55:50,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:50,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:50,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:50,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:50,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:50,690 INFO L134 CoverageAnalysis]: Checked inductivity of 22295 backedges. 15 proven. 18700 refuted. 0 times theorem prover too weak. 3580 trivial. 0 not checked. [2020-10-27 01:55:50,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089251537] [2020-10-27 01:55:50,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:55:50,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 01:55:50,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877004876] [2020-10-27 01:55:50,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 01:55:50,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:55:50,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 01:55:50,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:55:50,692 INFO L87 Difference]: Start difference. First operand 600 states and 626 transitions. Second operand 11 states. [2020-10-27 01:55:51,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:55:51,194 INFO L93 Difference]: Finished difference Result 896 states and 937 transitions. [2020-10-27 01:55:51,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 01:55:51,195 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 438 [2020-10-27 01:55:51,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:55:51,198 INFO L225 Difference]: With dead ends: 896 [2020-10-27 01:55:51,198 INFO L226 Difference]: Without dead ends: 745 [2020-10-27 01:55:51,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2020-10-27 01:55:51,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2020-10-27 01:55:51,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 672. [2020-10-27 01:55:51,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 672 states. [2020-10-27 01:55:51,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 701 transitions. [2020-10-27 01:55:51,254 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 701 transitions. Word has length 438 [2020-10-27 01:55:51,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:55:51,255 INFO L481 AbstractCegarLoop]: Abstraction has 672 states and 701 transitions. [2020-10-27 01:55:51,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 01:55:51,255 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 701 transitions. [2020-10-27 01:55:51,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2020-10-27 01:55:51,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:55:51,259 INFO L422 BasicCegarLoop]: trace histogram [140, 140, 140, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:55:51,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-27 01:55:51,260 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:55:51,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:55:51,260 INFO L82 PathProgramCache]: Analyzing trace with hash -947201034, now seen corresponding path program 6 times [2020-10-27 01:55:51,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:55:51,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912859332] [2020-10-27 01:55:51,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:55:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:51,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:51,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:51,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:51,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:51,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:51,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:52,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:52,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:52,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:52,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:52,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:52,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:52,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:56,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:56,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 533 [2020-10-27 01:55:56,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 01:55:56,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 01:55:56,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:56,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:55:56,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:55:56,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 519 [2020-10-27 01:55:56,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:56,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:55:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:56,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:56,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:56,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:55:56,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:56,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:55:56,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:56,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:56,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:56,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:55:56,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:56,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:55:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:56,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:56,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:56,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:56,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:56,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:55:56,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:56,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:56,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:56,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 01:55:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:56,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:56,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:56,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:56,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:56,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:55:56,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:56,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:56,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:56,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:56,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:56,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-27 01:55:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:56,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:56,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:56,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:56,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:56,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:55:56,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:56,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:56,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:56,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:56,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:56,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-27 01:55:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:56,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:56,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:56,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:56,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:56,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:55:56,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:56,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:56,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:56,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:56,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:56,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-27 01:55:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:56,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:56,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:56,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:56,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:56,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:55:56,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:56,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:56,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:56,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:56,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-27 01:55:56,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:56,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:56,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:56,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:56,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:56,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:55:56,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:56,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:56,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:56,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:56,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:56,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-27 01:55:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:56,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:56,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:55:56,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:55:56,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:55:56,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:55:56,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:55:56,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:55:56,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:55:56,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:55:56,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:55:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 30389 backedges. 18 proven. 26181 refuted. 0 times theorem prover too weak. 4190 trivial. 0 not checked. [2020-10-27 01:55:57,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912859332] [2020-10-27 01:55:57,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:55:57,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 01:55:57,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756364679] [2020-10-27 01:55:57,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 01:55:57,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:55:57,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 01:55:57,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:55:57,010 INFO L87 Difference]: Start difference. First operand 672 states and 701 transitions. Second operand 12 states. [2020-10-27 01:55:57,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:55:57,484 INFO L93 Difference]: Finished difference Result 968 states and 1012 transitions. [2020-10-27 01:55:57,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 01:55:57,484 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 509 [2020-10-27 01:55:57,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:55:57,487 INFO L225 Difference]: With dead ends: 968 [2020-10-27 01:55:57,487 INFO L226 Difference]: Without dead ends: 817 [2020-10-27 01:55:57,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2020-10-27 01:55:57,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2020-10-27 01:55:57,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 744. [2020-10-27 01:55:57,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2020-10-27 01:55:57,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 776 transitions. [2020-10-27 01:55:57,547 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 776 transitions. Word has length 509 [2020-10-27 01:55:57,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:55:57,548 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 776 transitions. [2020-10-27 01:55:57,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 01:55:57,548 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 776 transitions. [2020-10-27 01:55:57,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2020-10-27 01:55:57,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:55:57,553 INFO L422 BasicCegarLoop]: trace histogram [160, 160, 160, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:55:57,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-27 01:55:57,554 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:55:57,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:55:57,554 INFO L82 PathProgramCache]: Analyzing trace with hash -522400688, now seen corresponding path program 7 times [2020-10-27 01:55:57,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:55:57,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961537905] [2020-10-27 01:55:57,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:55:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:55:57,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:57,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:57,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:58,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:58,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:58,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:58,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:58,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:58,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:58,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:58,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:58,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:58,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:58,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:58,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:55:58,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:02,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:02,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 606 [2020-10-27 01:56:02,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 01:56:02,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-27 01:56:02,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:02,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 01:56:02,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:56:02,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 592 [2020-10-27 01:56:02,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:02,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:56:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:02,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:02,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:02,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:56:02,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:02,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:56:02,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:02,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:02,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:02,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:56:02,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:02,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:56:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:02,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:02,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:02,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:02,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:02,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:02,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:02,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:02,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:02,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:02,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:02,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 01:56:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:03,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:03,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:03,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:03,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:03,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:03,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:03,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:03,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-27 01:56:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:03,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:03,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:03,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:03,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:03,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:03,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:03,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:03,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:03,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:03,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:03,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-27 01:56:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:03,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:03,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:03,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:03,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:03,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:03,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:03,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:03,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:03,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:03,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:03,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-27 01:56:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:03,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:03,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:03,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:03,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:03,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:03,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:03,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:03,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:03,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:03,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:03,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-27 01:56:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:03,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:03,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:03,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:03,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:03,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:56:03,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:03,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:03,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:03,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:03,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:03,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-27 01:56:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:03,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:03,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:03,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:03,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:03,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:03,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:03,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:03,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:03,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:03,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:03,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-27 01:56:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:03,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:03,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:03,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:03,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:03,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:03,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:03,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:03,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:03,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:03,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:03,557 INFO L134 CoverageAnalysis]: Checked inductivity of 39734 backedges. 21 proven. 34909 refuted. 0 times theorem prover too weak. 4804 trivial. 0 not checked. [2020-10-27 01:56:03,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961537905] [2020-10-27 01:56:03,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:56:03,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 01:56:03,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683136079] [2020-10-27 01:56:03,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 01:56:03,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:56:03,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 01:56:03,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-10-27 01:56:03,559 INFO L87 Difference]: Start difference. First operand 744 states and 776 transitions. Second operand 13 states. [2020-10-27 01:56:04,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:56:04,140 INFO L93 Difference]: Finished difference Result 1040 states and 1087 transitions. [2020-10-27 01:56:04,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 01:56:04,141 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 580 [2020-10-27 01:56:04,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:56:04,144 INFO L225 Difference]: With dead ends: 1040 [2020-10-27 01:56:04,144 INFO L226 Difference]: Without dead ends: 889 [2020-10-27 01:56:04,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2020-10-27 01:56:04,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-10-27 01:56:04,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 816. [2020-10-27 01:56:04,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-10-27 01:56:04,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 851 transitions. [2020-10-27 01:56:04,218 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 851 transitions. Word has length 580 [2020-10-27 01:56:04,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:56:04,218 INFO L481 AbstractCegarLoop]: Abstraction has 816 states and 851 transitions. [2020-10-27 01:56:04,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 01:56:04,218 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 851 transitions. [2020-10-27 01:56:04,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2020-10-27 01:56:04,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:56:04,224 INFO L422 BasicCegarLoop]: trace histogram [180, 180, 180, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:56:04,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-27 01:56:04,225 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:56:04,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:56:04,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1170181450, now seen corresponding path program 8 times [2020-10-27 01:56:04,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:56:04,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450149079] [2020-10-27 01:56:04,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:56:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:04,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:04,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:04,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:05,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:05,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:05,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:05,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:05,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:05,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:06,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:06,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:06,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:07,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:07,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:07,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:07,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:07,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:07,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:07,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:08,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:08,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:09,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:09,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 679 [2020-10-27 01:56:09,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-27 01:56:09,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-27 01:56:09,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:09,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:56:09,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:56:09,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 665 [2020-10-27 01:56:09,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:09,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:56:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:09,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:09,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:09,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:56:09,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:09,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:56:09,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:09,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:09,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:09,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:56:09,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:09,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:56:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:09,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:09,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:09,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:09,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:09,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:09,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:09,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:09,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:09,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:09,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:09,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 01:56:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:09,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:09,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:09,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:09,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:09,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:09,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:09,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:09,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:09,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:09,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:09,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-27 01:56:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:09,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:09,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:09,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:09,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:09,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:09,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:09,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:09,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:09,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:09,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:09,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-27 01:56:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:09,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:09,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:09,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:09,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:09,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:09,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:09,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:09,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:09,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:09,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:09,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-27 01:56:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:09,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:09,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:09,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:09,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:09,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:09,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:09,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:09,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:09,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:09,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:09,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-27 01:56:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:09,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:09,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:09,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:09,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:09,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:09,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:09,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:09,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:09,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:09,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:09,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-27 01:56:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:09,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:09,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:09,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:09,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:09,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:09,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:09,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:09,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:09,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:09,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:09,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-27 01:56:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:09,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:09,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:09,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:09,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:09,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:09,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:09,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:09,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:09,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:09,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:09,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-27 01:56:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:09,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:09,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:09,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:09,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:09,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:09,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:09,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:09,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:09,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:09,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:10,292 INFO L134 CoverageAnalysis]: Checked inductivity of 50330 backedges. 24 proven. 44884 refuted. 0 times theorem prover too weak. 5422 trivial. 0 not checked. [2020-10-27 01:56:10,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450149079] [2020-10-27 01:56:10,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:56:10,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 01:56:10,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067805871] [2020-10-27 01:56:10,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 01:56:10,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:56:10,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 01:56:10,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-10-27 01:56:10,294 INFO L87 Difference]: Start difference. First operand 816 states and 851 transitions. Second operand 14 states. [2020-10-27 01:56:10,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:56:10,866 INFO L93 Difference]: Finished difference Result 1112 states and 1162 transitions. [2020-10-27 01:56:10,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 01:56:10,866 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 651 [2020-10-27 01:56:10,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:56:10,870 INFO L225 Difference]: With dead ends: 1112 [2020-10-27 01:56:10,870 INFO L226 Difference]: Without dead ends: 961 [2020-10-27 01:56:10,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=360, Unknown=0, NotChecked=0, Total=552 [2020-10-27 01:56:10,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2020-10-27 01:56:10,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 888. [2020-10-27 01:56:10,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-10-27 01:56:10,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 926 transitions. [2020-10-27 01:56:10,947 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 926 transitions. Word has length 651 [2020-10-27 01:56:10,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:56:10,948 INFO L481 AbstractCegarLoop]: Abstraction has 888 states and 926 transitions. [2020-10-27 01:56:10,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 01:56:10,948 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 926 transitions. [2020-10-27 01:56:10,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2020-10-27 01:56:10,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:56:10,955 INFO L422 BasicCegarLoop]: trace histogram [200, 200, 200, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:56:10,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-27 01:56:10,955 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:56:10,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:56:10,956 INFO L82 PathProgramCache]: Analyzing trace with hash 243932560, now seen corresponding path program 9 times [2020-10-27 01:56:10,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:56:10,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601201449] [2020-10-27 01:56:10,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:56:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:11,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:11,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:11,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:11,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:12,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:12,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:12,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:12,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:12,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:12,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:12,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:12,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:12,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:13,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:13,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:16,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:16,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 752 [2020-10-27 01:56:16,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 01:56:16,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-27 01:56:16,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:16,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:56:16,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:56:16,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 738 [2020-10-27 01:56:16,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:16,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:56:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:16,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:16,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:16,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:56:16,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:16,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:56:16,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:16,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:16,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:16,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:56:16,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:16,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:56:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:16,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:16,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:16,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:16,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:16,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:16,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:16,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:16,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:16,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:16,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:16,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 01:56:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:16,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:16,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:16,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:16,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:16,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:16,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:16,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:16,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:16,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:16,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:16,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-27 01:56:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:16,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:16,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:16,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:16,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:16,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:16,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:16,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:16,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:16,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:16,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:16,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-27 01:56:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:16,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:16,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:16,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:16,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:16,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:16,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:16,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:16,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:16,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:16,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:16,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-27 01:56:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:16,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:16,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:16,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:16,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:16,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:16,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:16,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:16,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:16,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-27 01:56:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:16,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:16,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:16,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:16,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:16,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:16,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:16,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:16,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:16,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:16,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:16,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-27 01:56:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:16,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:16,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:16,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:16,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:16,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:16,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:16,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:16,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:16,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-27 01:56:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:16,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:16,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:16,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:16,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:16,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:16,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:16,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:16,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:16,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:16,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:16,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-27 01:56:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:16,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:16,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:16,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:16,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:16,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:16,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:16,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:16,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:16,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:16,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:16,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 01:56:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:16,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:16,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:16,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:16,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:16,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:16,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:16,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:16,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:16,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:16,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:17,103 INFO L134 CoverageAnalysis]: Checked inductivity of 62177 backedges. 27 proven. 56106 refuted. 0 times theorem prover too weak. 6044 trivial. 0 not checked. [2020-10-27 01:56:17,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601201449] [2020-10-27 01:56:17,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:56:17,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 01:56:17,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773205953] [2020-10-27 01:56:17,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 01:56:17,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:56:17,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 01:56:17,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2020-10-27 01:56:17,105 INFO L87 Difference]: Start difference. First operand 888 states and 926 transitions. Second operand 15 states. [2020-10-27 01:56:17,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:56:17,765 INFO L93 Difference]: Finished difference Result 1184 states and 1237 transitions. [2020-10-27 01:56:17,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 01:56:17,766 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 722 [2020-10-27 01:56:17,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:56:17,771 INFO L225 Difference]: With dead ends: 1184 [2020-10-27 01:56:17,771 INFO L226 Difference]: Without dead ends: 1033 [2020-10-27 01:56:17,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=227, Invalid=423, Unknown=0, NotChecked=0, Total=650 [2020-10-27 01:56:17,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2020-10-27 01:56:17,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 960. [2020-10-27 01:56:17,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2020-10-27 01:56:17,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1001 transitions. [2020-10-27 01:56:17,839 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1001 transitions. Word has length 722 [2020-10-27 01:56:17,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:56:17,839 INFO L481 AbstractCegarLoop]: Abstraction has 960 states and 1001 transitions. [2020-10-27 01:56:17,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 01:56:17,840 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1001 transitions. [2020-10-27 01:56:17,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2020-10-27 01:56:17,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:56:17,847 INFO L422 BasicCegarLoop]: trace histogram [220, 220, 220, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:56:17,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-27 01:56:17,847 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:56:17,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:56:17,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1574648182, now seen corresponding path program 10 times [2020-10-27 01:56:17,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:56:17,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313245338] [2020-10-27 01:56:17,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:56:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:17,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:18,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:18,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:19,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:19,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:19,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:19,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:19,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:19,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:19,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:20,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:20,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:20,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:20,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:22,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:22,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 825 [2020-10-27 01:56:22,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 01:56:22,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 01:56:22,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:22,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 01:56:22,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:56:22,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 811 [2020-10-27 01:56:22,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:23,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:56:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:23,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:23,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:23,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:56:23,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:23,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:56:23,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:23,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:23,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:23,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:56:23,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:23,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:56:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:23,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:23,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:23,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:23,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:23,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:23,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:23,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:23,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:23,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:23,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:23,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 01:56:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:23,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:23,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:23,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:23,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:23,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:23,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:23,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:23,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:23,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:23,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:23,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-27 01:56:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:23,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:23,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:23,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:23,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:23,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:23,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:23,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:23,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:23,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:23,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:23,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-27 01:56:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:23,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:23,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:23,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:23,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:23,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:23,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:23,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:23,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:23,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:23,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:23,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-27 01:56:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:23,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:23,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:23,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:23,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:23,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:23,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:23,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:23,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:23,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:23,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-27 01:56:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:23,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:23,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:23,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:23,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:23,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:23,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:23,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:23,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:23,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:23,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:23,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-27 01:56:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:23,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:23,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:23,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:23,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:23,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:23,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:23,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:23,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:23,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:23,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:23,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-27 01:56:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:23,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:23,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:23,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:23,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:23,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:23,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:23,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:23,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:23,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:23,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:23,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-27 01:56:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:23,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:23,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:23,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:23,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:23,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:23,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:23,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:23,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:23,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:23,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:23,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 01:56:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:23,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:23,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:23,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:23,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:23,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:23,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:23,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:23,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:23,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:23,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:23,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2020-10-27 01:56:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:23,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:23,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:23,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:23,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:23,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:23,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:23,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:23,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:23,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:23,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:24,173 INFO L134 CoverageAnalysis]: Checked inductivity of 75275 backedges. 30 proven. 68575 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2020-10-27 01:56:24,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313245338] [2020-10-27 01:56:24,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:56:24,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 01:56:24,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007967337] [2020-10-27 01:56:24,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 01:56:24,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:56:24,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 01:56:24,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-10-27 01:56:24,175 INFO L87 Difference]: Start difference. First operand 960 states and 1001 transitions. Second operand 16 states. [2020-10-27 01:56:24,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:56:24,949 INFO L93 Difference]: Finished difference Result 1256 states and 1312 transitions. [2020-10-27 01:56:24,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 01:56:24,950 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 793 [2020-10-27 01:56:24,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:56:24,954 INFO L225 Difference]: With dead ends: 1256 [2020-10-27 01:56:24,955 INFO L226 Difference]: Without dead ends: 1105 [2020-10-27 01:56:24,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=279, Invalid=533, Unknown=0, NotChecked=0, Total=812 [2020-10-27 01:56:24,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2020-10-27 01:56:25,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1032. [2020-10-27 01:56:25,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-10-27 01:56:25,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1076 transitions. [2020-10-27 01:56:25,033 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1076 transitions. Word has length 793 [2020-10-27 01:56:25,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:56:25,034 INFO L481 AbstractCegarLoop]: Abstraction has 1032 states and 1076 transitions. [2020-10-27 01:56:25,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 01:56:25,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1076 transitions. [2020-10-27 01:56:25,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2020-10-27 01:56:25,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:56:25,043 INFO L422 BasicCegarLoop]: trace histogram [240, 240, 240, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:56:25,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-27 01:56:25,043 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:56:25,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:56:25,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1503411920, now seen corresponding path program 11 times [2020-10-27 01:56:25,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:56:25,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75912258] [2020-10-27 01:56:25,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:56:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:25,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:25,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:25,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:26,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:26,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:26,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:27,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:27,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:27,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:27,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:27,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:27,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:27,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:28,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:28,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:30,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:30,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 898 [2020-10-27 01:56:30,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 01:56:30,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-27 01:56:30,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:30,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:56:30,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:56:30,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 884 [2020-10-27 01:56:30,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:30,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:56:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:30,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:30,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:30,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:56:30,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:30,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:56:30,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:30,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:30,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:30,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:56:30,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:30,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:56:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:30,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:30,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:30,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:30,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:30,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:30,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:30,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:30,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:30,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:30,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:30,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 01:56:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:30,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:30,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:30,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:30,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:30,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:30,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:30,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:30,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:30,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:30,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:30,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-27 01:56:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:30,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:30,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:30,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:30,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:30,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:30,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:30,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:30,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:30,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:30,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:30,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-27 01:56:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:30,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:30,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:30,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:30,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:30,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:30,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:30,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:30,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:30,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:30,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-27 01:56:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:30,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:30,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:30,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:30,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:30,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:30,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:30,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:30,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:30,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:30,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:30,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-27 01:56:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:30,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:30,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:30,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:30,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:30,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:30,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:30,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:30,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:30,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:30,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:30,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-27 01:56:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:30,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:30,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:30,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:30,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:30,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:30,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:30,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:30,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:30,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:30,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:30,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-27 01:56:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:30,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:30,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:30,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:30,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:30,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:30,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:30,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:30,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:30,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:30,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:30,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-27 01:56:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:30,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:30,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:30,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:30,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:30,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:30,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:30,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:30,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:30,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:30,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:30,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 01:56:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:30,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:30,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:30,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:30,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:30,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:30,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:30,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:30,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:30,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:30,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:30,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2020-10-27 01:56:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:30,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:30,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:30,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:30,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:30,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:30,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:30,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:30,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:30,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:30,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:30,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 788 [2020-10-27 01:56:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:30,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:30,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:30,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:30,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:30,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:30,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:30,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:30,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:30,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:30,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:31,637 INFO L134 CoverageAnalysis]: Checked inductivity of 89624 backedges. 33 proven. 82291 refuted. 0 times theorem prover too weak. 7300 trivial. 0 not checked. [2020-10-27 01:56:31,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75912258] [2020-10-27 01:56:31,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:56:31,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 01:56:31,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582386985] [2020-10-27 01:56:31,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 01:56:31,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:56:31,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 01:56:31,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-10-27 01:56:31,639 INFO L87 Difference]: Start difference. First operand 1032 states and 1076 transitions. Second operand 17 states. [2020-10-27 01:56:32,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:56:32,416 INFO L93 Difference]: Finished difference Result 1328 states and 1387 transitions. [2020-10-27 01:56:32,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 01:56:32,417 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 864 [2020-10-27 01:56:32,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:56:32,423 INFO L225 Difference]: With dead ends: 1328 [2020-10-27 01:56:32,423 INFO L226 Difference]: Without dead ends: 1177 [2020-10-27 01:56:32,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=321, Invalid=609, Unknown=0, NotChecked=0, Total=930 [2020-10-27 01:56:32,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2020-10-27 01:56:32,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1104. [2020-10-27 01:56:32,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1104 states. [2020-10-27 01:56:32,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1151 transitions. [2020-10-27 01:56:32,517 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1151 transitions. Word has length 864 [2020-10-27 01:56:32,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:56:32,519 INFO L481 AbstractCegarLoop]: Abstraction has 1104 states and 1151 transitions. [2020-10-27 01:56:32,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 01:56:32,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1151 transitions. [2020-10-27 01:56:32,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 936 [2020-10-27 01:56:32,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:56:32,529 INFO L422 BasicCegarLoop]: trace histogram [260, 260, 260, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:56:32,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-27 01:56:32,529 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:56:32,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:56:32,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1635307466, now seen corresponding path program 12 times [2020-10-27 01:56:32,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:56:32,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211331079] [2020-10-27 01:56:32,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:56:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:32,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:34,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:34,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:35,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:35,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:35,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:35,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:35,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:35,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:35,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:35,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:35,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:36,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:37,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:37,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 971 [2020-10-27 01:56:37,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 01:56:37,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-27 01:56:37,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:37,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 01:56:37,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:56:37,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 957 [2020-10-27 01:56:37,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:38,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:56:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:38,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:38,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:38,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:56:38,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:38,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:56:38,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:38,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:38,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:38,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:56:38,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:38,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:56:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:38,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:38,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:38,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:38,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:38,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:38,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:38,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:38,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 01:56:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:38,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:38,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:38,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:38,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:38,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:38,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:38,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:38,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:38,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:38,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:38,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-27 01:56:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:38,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:38,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:38,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:38,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:38,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:38,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:38,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:38,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:38,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:38,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:38,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-27 01:56:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:38,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:38,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:38,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:38,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:38,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:38,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:38,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:38,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:38,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:38,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:38,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-27 01:56:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:38,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:38,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:38,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:38,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:38,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:38,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:38,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:38,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:38,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:38,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:38,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-27 01:56:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:38,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:38,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:38,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:38,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:38,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:38,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:38,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:38,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:38,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:38,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:38,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-27 01:56:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:38,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:38,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:38,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:38,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:38,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:38,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:38,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:38,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:38,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:38,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:38,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-27 01:56:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:38,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:38,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:38,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:38,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:38,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:56:38,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:38,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:38,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:38,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:38,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:38,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-27 01:56:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:38,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:38,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:38,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:38,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:38,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:38,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:38,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:38,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:38,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:38,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:38,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 01:56:38,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:38,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:38,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:38,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:38,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:38,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:38,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:38,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:38,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:38,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:38,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:38,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2020-10-27 01:56:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:38,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:38,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:38,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:38,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:38,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:38,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:38,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:38,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:38,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:38,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:38,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 788 [2020-10-27 01:56:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:38,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:38,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:38,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:38,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:38,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:38,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:38,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:38,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:38,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:38,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:38,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-10-27 01:56:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:38,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:38,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:38,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:38,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:38,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:56:38,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:38,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:38,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:38,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:38,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:39,323 INFO L134 CoverageAnalysis]: Checked inductivity of 105224 backedges. 36 proven. 97254 refuted. 0 times theorem prover too weak. 7934 trivial. 0 not checked. [2020-10-27 01:56:39,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211331079] [2020-10-27 01:56:39,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:56:39,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 01:56:39,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772433073] [2020-10-27 01:56:39,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 01:56:39,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:56:39,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 01:56:39,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-10-27 01:56:39,325 INFO L87 Difference]: Start difference. First operand 1104 states and 1151 transitions. Second operand 18 states. [2020-10-27 01:56:40,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:56:40,268 INFO L93 Difference]: Finished difference Result 1400 states and 1462 transitions. [2020-10-27 01:56:40,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 01:56:40,269 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 935 [2020-10-27 01:56:40,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:56:40,276 INFO L225 Difference]: With dead ends: 1400 [2020-10-27 01:56:40,276 INFO L226 Difference]: Without dead ends: 1249 [2020-10-27 01:56:40,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=366, Invalid=690, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 01:56:40,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2020-10-27 01:56:40,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1176. [2020-10-27 01:56:40,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1176 states. [2020-10-27 01:56:40,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1226 transitions. [2020-10-27 01:56:40,357 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1226 transitions. Word has length 935 [2020-10-27 01:56:40,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:56:40,358 INFO L481 AbstractCegarLoop]: Abstraction has 1176 states and 1226 transitions. [2020-10-27 01:56:40,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 01:56:40,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1226 transitions. [2020-10-27 01:56:40,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1007 [2020-10-27 01:56:40,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:56:40,369 INFO L422 BasicCegarLoop]: trace histogram [280, 280, 280, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:56:40,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-27 01:56:40,369 INFO L429 AbstractCegarLoop]: === Iteration 52 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:56:40,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:56:40,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1818701840, now seen corresponding path program 13 times [2020-10-27 01:56:40,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:56:40,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526170511] [2020-10-27 01:56:40,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:56:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:40,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:40,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:41,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:41,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:42,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:42,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:42,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:43,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:43,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:43,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:43,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:45,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:45,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:45,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1044 [2020-10-27 01:56:45,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 01:56:45,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-10-27 01:56:45,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:45,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 01:56:45,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:56:45,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1030 [2020-10-27 01:56:45,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:46,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:56:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:46,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:46,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:46,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:56:46,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:46,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:56:46,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:46,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:46,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:46,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:56:46,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:46,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:56:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:46,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:46,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:46,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:46,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:46,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:46,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:46,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:46,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:46,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:46,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:46,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 01:56:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:46,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:46,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:46,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:46,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:46,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:56:46,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:46,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:46,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:46,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:46,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:46,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-27 01:56:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:46,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:46,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:46,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:46,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:46,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:46,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:46,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:46,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:46,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:46,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:46,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-27 01:56:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:46,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:46,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:46,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:46,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:46,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:56:46,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:46,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:46,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:46,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:46,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:46,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-27 01:56:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:46,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:46,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:46,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:46,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:46,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:46,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:46,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:46,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:46,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:46,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:46,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-27 01:56:46,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:46,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:46,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:46,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:46,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:46,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:46,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:46,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:46,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:46,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:46,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:46,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-27 01:56:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:46,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:46,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:46,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:46,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:46,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:46,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:46,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:46,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:46,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:46,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:46,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-27 01:56:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:46,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:46,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:46,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:46,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:46,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:46,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:46,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:46,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:46,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:46,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:46,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-27 01:56:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:46,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:46,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:46,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:46,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:46,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:46,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:46,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:46,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:46,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:46,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:46,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 01:56:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:46,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:46,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:46,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:46,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:46,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:46,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:46,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:46,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:46,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:46,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:46,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2020-10-27 01:56:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:46,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:46,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:46,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:46,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:46,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:46,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:46,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:46,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 788 [2020-10-27 01:56:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:46,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:46,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:46,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:46,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:46,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:56:46,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:46,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:46,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:46,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:46,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:46,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-10-27 01:56:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:46,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:46,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:46,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:46,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:46,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:56:46,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:46,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:46,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:46,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:46,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:46,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 930 [2020-10-27 01:56:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:46,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:46,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:46,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:46,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:46,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:56:46,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:46,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:46,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:46,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:46,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:47,572 INFO L134 CoverageAnalysis]: Checked inductivity of 122075 backedges. 39 proven. 113464 refuted. 0 times theorem prover too weak. 8572 trivial. 0 not checked. [2020-10-27 01:56:47,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526170511] [2020-10-27 01:56:47,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:56:47,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 01:56:47,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181201188] [2020-10-27 01:56:47,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 01:56:47,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:56:47,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 01:56:47,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=201, Unknown=0, NotChecked=0, Total=342 [2020-10-27 01:56:47,575 INFO L87 Difference]: Start difference. First operand 1176 states and 1226 transitions. Second operand 19 states. [2020-10-27 01:56:48,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:56:48,513 INFO L93 Difference]: Finished difference Result 1472 states and 1537 transitions. [2020-10-27 01:56:48,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 01:56:48,513 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 1006 [2020-10-27 01:56:48,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:56:48,518 INFO L225 Difference]: With dead ends: 1472 [2020-10-27 01:56:48,518 INFO L226 Difference]: Without dead ends: 1321 [2020-10-27 01:56:48,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=725, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 01:56:48,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2020-10-27 01:56:48,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1248. [2020-10-27 01:56:48,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1248 states. [2020-10-27 01:56:48,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1301 transitions. [2020-10-27 01:56:48,595 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1301 transitions. Word has length 1006 [2020-10-27 01:56:48,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:56:48,595 INFO L481 AbstractCegarLoop]: Abstraction has 1248 states and 1301 transitions. [2020-10-27 01:56:48,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 01:56:48,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1301 transitions. [2020-10-27 01:56:48,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1078 [2020-10-27 01:56:48,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:56:48,606 INFO L422 BasicCegarLoop]: trace histogram [300, 300, 300, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:56:48,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-27 01:56:48,607 INFO L429 AbstractCegarLoop]: === Iteration 53 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:56:48,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:56:48,607 INFO L82 PathProgramCache]: Analyzing trace with hash -344959242, now seen corresponding path program 14 times [2020-10-27 01:56:48,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:56:48,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008205988] [2020-10-27 01:56:48,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:56:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:48,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:50,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:51,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:51,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:51,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:52,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:52,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:52,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:52,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:52,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:52,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:52,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:53,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:53,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:53,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1117 [2020-10-27 01:56:53,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 01:56:53,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 01:56:53,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:53,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 01:56:53,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:56:53,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1103 [2020-10-27 01:56:53,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:54,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:56:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:54,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:54,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:54,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:56:54,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:54,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:56:54,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:54,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:54,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:54,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:56:54,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:54,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:56:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:54,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:54,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:54,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:54,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:54,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:54,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:54,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:54,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:54,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:54,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:54,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 01:56:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:54,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:54,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:54,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:54,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:54,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:54,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:54,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:54,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-27 01:56:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:54,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:54,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:54,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:54,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:54,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:54,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:54,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:54,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:54,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:54,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:54,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-27 01:56:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:54,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:54,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:54,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:54,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:54,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:54,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:54,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:54,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:54,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:54,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:54,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-27 01:56:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:54,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:54,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:54,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:54,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:54,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:54,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:54,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:54,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:54,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:54,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:54,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-27 01:56:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:54,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:54,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:54,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:54,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:54,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:54,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:54,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:54,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:54,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:54,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:54,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-27 01:56:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:54,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:54,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:54,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:54,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:54,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:54,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:54,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:54,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:54,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:54,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:54,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-27 01:56:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:54,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:54,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:54,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:54,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:54,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:54,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:54,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:54,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:54,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:54,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:54,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-27 01:56:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:54,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:54,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:54,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:54,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:54,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:54,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:54,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:54,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:54,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:54,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:54,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 01:56:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:54,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:54,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:54,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:54,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:54,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:54,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:54,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:54,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:54,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:54,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:54,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2020-10-27 01:56:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:54,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:54,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:54,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:54,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:54,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:56:54,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:54,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:54,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:54,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:54,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:54,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 788 [2020-10-27 01:56:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:54,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:54,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:54,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:54,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:54,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:54,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:54,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:54,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:54,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:54,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:54,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-10-27 01:56:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:54,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:54,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:54,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:54,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:54,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:54,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:54,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:54,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:54,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:54,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:54,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 930 [2020-10-27 01:56:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:54,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:54,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:54,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:54,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:54,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:54,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:54,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:54,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:54,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:54,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:54,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1001 [2020-10-27 01:56:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:54,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:54,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:56:54,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:56:54,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:56:54,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:56:54,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:56:54,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:56:54,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:56:54,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:56:54,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:56:55,756 INFO L134 CoverageAnalysis]: Checked inductivity of 140177 backedges. 42 proven. 130921 refuted. 0 times theorem prover too weak. 9214 trivial. 0 not checked. [2020-10-27 01:56:55,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008205988] [2020-10-27 01:56:55,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:56:55,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 01:56:55,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997957113] [2020-10-27 01:56:55,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 01:56:55,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:56:55,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 01:56:55,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=223, Unknown=0, NotChecked=0, Total=380 [2020-10-27 01:56:55,757 INFO L87 Difference]: Start difference. First operand 1248 states and 1301 transitions. Second operand 20 states. [2020-10-27 01:56:56,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:56:56,756 INFO L93 Difference]: Finished difference Result 1544 states and 1612 transitions. [2020-10-27 01:56:56,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 01:56:56,757 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 1077 [2020-10-27 01:56:56,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:56:56,762 INFO L225 Difference]: With dead ends: 1544 [2020-10-27 01:56:56,762 INFO L226 Difference]: Without dead ends: 1393 [2020-10-27 01:56:56,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=465, Invalid=867, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 01:56:56,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2020-10-27 01:56:56,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1320. [2020-10-27 01:56:56,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1320 states. [2020-10-27 01:56:56,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1376 transitions. [2020-10-27 01:56:56,853 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1376 transitions. Word has length 1077 [2020-10-27 01:56:56,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:56:56,854 INFO L481 AbstractCegarLoop]: Abstraction has 1320 states and 1376 transitions. [2020-10-27 01:56:56,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 01:56:56,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1376 transitions. [2020-10-27 01:56:56,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1149 [2020-10-27 01:56:56,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:56:56,865 INFO L422 BasicCegarLoop]: trace histogram [320, 320, 320, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:56:56,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-27 01:56:56,865 INFO L429 AbstractCegarLoop]: === Iteration 54 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:56:56,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:56:56,865 INFO L82 PathProgramCache]: Analyzing trace with hash 239006032, now seen corresponding path program 15 times [2020-10-27 01:56:56,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:56:56,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435070163] [2020-10-27 01:56:56,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:56:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:56:57,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:56:59,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:00,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:00,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:01,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:01,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:01,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:01,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:02,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:02,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1190 [2020-10-27 01:57:02,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 01:57:02,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 01:57:02,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:02,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 01:57:02,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:57:02,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1176 [2020-10-27 01:57:02,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:02,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:57:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:02,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:02,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:02,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:57:02,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:02,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:57:02,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:57:02,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:02,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:57:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:02,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:02,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:02,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:02,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:02,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:57:02,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:02,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:02,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:02,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:02,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:02,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 01:57:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:02,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:02,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:02,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:02,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:02,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:57:02,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:02,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:02,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:02,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:02,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:02,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-27 01:57:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:02,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:02,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:02,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:02,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:02,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:57:02,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:02,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:02,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-27 01:57:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:02,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:02,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:02,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:02,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:02,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:57:02,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:02,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:02,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:02,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:02,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:02,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-27 01:57:02,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:02,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:02,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:02,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:02,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:02,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:57:02,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:02,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:02,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:02,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:02,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:02,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-27 01:57:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:02,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:02,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:02,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:02,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:02,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:57:02,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:02,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:02,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:02,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:02,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:02,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-27 01:57:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:02,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:02,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:02,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:02,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:02,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:57:02,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:02,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:02,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:02,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:02,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:02,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-27 01:57:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:02,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:02,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:02,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:02,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:02,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:57:02,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:02,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:02,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:02,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:02,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:02,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-27 01:57:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:02,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:02,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:02,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:02,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:02,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:57:02,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:02,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:02,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:02,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:02,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:02,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 01:57:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:02,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:02,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:02,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:02,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:02,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:57:02,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:02,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:02,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:02,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:02,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:02,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2020-10-27 01:57:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:02,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:02,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:02,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:02,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:02,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:57:02,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:02,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:02,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:02,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:02,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:02,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 788 [2020-10-27 01:57:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:02,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:02,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:02,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:02,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:02,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:57:02,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:02,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:02,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:02,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:02,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:02,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-10-27 01:57:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:02,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:02,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:02,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:02,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:02,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:57:02,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:02,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:02,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:02,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:02,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:02,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 930 [2020-10-27 01:57:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:02,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:02,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:02,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:02,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:02,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:57:02,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:02,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:02,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:02,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:02,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:02,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1001 [2020-10-27 01:57:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:02,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:02,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:02,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:02,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:02,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:57:02,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:02,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:02,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:02,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:02,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:02,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1072 [2020-10-27 01:57:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:02,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:02,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:02,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:02,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:02,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:57:02,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:02,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:02,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:02,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:02,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 159530 backedges. 45 proven. 149625 refuted. 0 times theorem prover too weak. 9860 trivial. 0 not checked. [2020-10-27 01:57:04,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435070163] [2020-10-27 01:57:04,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:57:04,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 01:57:04,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437311799] [2020-10-27 01:57:04,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 01:57:04,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:57:04,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 01:57:04,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2020-10-27 01:57:04,488 INFO L87 Difference]: Start difference. First operand 1320 states and 1376 transitions. Second operand 21 states. [2020-10-27 01:57:05,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:57:05,593 INFO L93 Difference]: Finished difference Result 1616 states and 1687 transitions. [2020-10-27 01:57:05,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 01:57:05,593 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 1148 [2020-10-27 01:57:05,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:57:05,600 INFO L225 Difference]: With dead ends: 1616 [2020-10-27 01:57:05,600 INFO L226 Difference]: Without dead ends: 1465 [2020-10-27 01:57:05,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=519, Invalid=963, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 01:57:05,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2020-10-27 01:57:05,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1392. [2020-10-27 01:57:05,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1392 states. [2020-10-27 01:57:05,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 1451 transitions. [2020-10-27 01:57:05,717 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 1451 transitions. Word has length 1148 [2020-10-27 01:57:05,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:57:05,718 INFO L481 AbstractCegarLoop]: Abstraction has 1392 states and 1451 transitions. [2020-10-27 01:57:05,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 01:57:05,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 1451 transitions. [2020-10-27 01:57:05,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1220 [2020-10-27 01:57:05,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:57:05,733 INFO L422 BasicCegarLoop]: trace histogram [340, 340, 340, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:57:05,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-27 01:57:05,733 INFO L429 AbstractCegarLoop]: === Iteration 55 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:57:05,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:57:05,734 INFO L82 PathProgramCache]: Analyzing trace with hash -155013706, now seen corresponding path program 16 times [2020-10-27 01:57:05,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:57:05,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658049497] [2020-10-27 01:57:05,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:57:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:05,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:06,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:07,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:08,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:08,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:09,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:09,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:09,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:10,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:10,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:10,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:10,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:10,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1263 [2020-10-27 01:57:10,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 01:57:10,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 01:57:10,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:10,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 01:57:10,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:57:10,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1249 [2020-10-27 01:57:10,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:11,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:57:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:11,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:11,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:11,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:57:11,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:11,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:57:11,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:11,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:11,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:11,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:57:11,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:11,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:57:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:11,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:11,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:11,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:11,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:11,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:57:11,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:11,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:11,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:11,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:11,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:11,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 01:57:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:11,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:11,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:11,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:11,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:11,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:57:11,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:11,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:11,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:11,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:11,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:11,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-27 01:57:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:11,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:11,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:11,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:11,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:11,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:57:11,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:11,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:11,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:11,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:11,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:11,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-27 01:57:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:11,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:11,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:11,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:11,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:11,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:57:11,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:11,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:11,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:11,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:11,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:11,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-27 01:57:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:11,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:11,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:11,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:11,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:11,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:57:11,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:11,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:11,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:11,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:11,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:11,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-27 01:57:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:11,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:11,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:11,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:11,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:11,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:57:11,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:11,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:11,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:11,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:11,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:11,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-27 01:57:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:11,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:11,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:11,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:11,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:11,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:57:11,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:11,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:11,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:11,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:11,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:11,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-27 01:57:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:11,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:11,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:11,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:11,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:11,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:57:11,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:11,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:11,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:11,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:11,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:11,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-27 01:57:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:11,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:11,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:11,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:11,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:11,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:57:11,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:11,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:11,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:11,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:11,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:11,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 01:57:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:11,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:11,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:11,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:11,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:11,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:57:11,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:11,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:11,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:11,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:11,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:11,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2020-10-27 01:57:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:11,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:11,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:11,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:11,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:11,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:57:11,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:11,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:11,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:11,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:11,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:11,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 788 [2020-10-27 01:57:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:11,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:11,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:11,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:11,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:11,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:57:11,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:11,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:11,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-10-27 01:57:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:11,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:11,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:11,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:11,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:11,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:57:11,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:11,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:11,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:11,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:11,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:11,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 930 [2020-10-27 01:57:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:11,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:11,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:11,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:11,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:11,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:57:11,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:11,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:11,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:11,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:11,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:11,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1001 [2020-10-27 01:57:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:11,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:11,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:11,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:11,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:11,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:57:11,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:11,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:11,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:11,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:11,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:11,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1072 [2020-10-27 01:57:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:11,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:11,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:11,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:11,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:11,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:57:11,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:11,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:11,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:11,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:11,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:11,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1143 [2020-10-27 01:57:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:57:11,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:57:11,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:57:11,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:57:11,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:57:11,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:57:11,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:57:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:57:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:57:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:57:11,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:57:13,403 INFO L134 CoverageAnalysis]: Checked inductivity of 180134 backedges. 48 proven. 169576 refuted. 0 times theorem prover too weak. 10510 trivial. 0 not checked. [2020-10-27 01:57:13,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658049497] [2020-10-27 01:57:13,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:57:13,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 01:57:13,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886822712] [2020-10-27 01:57:13,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 01:57:13,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:57:13,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 01:57:13,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=268, Unknown=0, NotChecked=0, Total=462 [2020-10-27 01:57:13,406 INFO L87 Difference]: Start difference. First operand 1392 states and 1451 transitions. Second operand 22 states.