/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/array-tiling/nr3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 19:53:12,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 19:53:12,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 19:53:12,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 19:53:12,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 19:53:12,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 19:53:12,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 19:53:12,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 19:53:12,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 19:53:12,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 19:53:12,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 19:53:12,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 19:53:12,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 19:53:12,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 19:53:12,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 19:53:12,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 19:53:12,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 19:53:12,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 19:53:12,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 19:53:12,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 19:53:12,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 19:53:12,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 19:53:12,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 19:53:12,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 19:53:12,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 19:53:12,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 19:53:12,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 19:53:12,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 19:53:12,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 19:53:12,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 19:53:12,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 19:53:12,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 19:53:12,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 19:53:12,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 19:53:12,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 19:53:12,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 19:53:12,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 19:53:12,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 19:53:12,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 19:53:12,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 19:53:12,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 19:53:12,883 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 [2020-10-26 19:53:12,912 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 19:53:12,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 19:53:12,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 19:53:12,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 19:53:12,914 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 19:53:12,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 19:53:12,915 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 19:53:12,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 19:53:12,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 19:53:12,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 19:53:12,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 19:53:12,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 19:53:12,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 19:53:12,916 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 19:53:12,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 19:53:12,916 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 19:53:12,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 19:53:12,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 19:53:12,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 19:53:12,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 19:53:12,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 19:53:12,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:53:12,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 19:53:12,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 19:53:12,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 19:53:12,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 19:53:12,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 19:53:12,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 19:53:12,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 19:53:12,920 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 19:53:13,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 19:53:13,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 19:53:13,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 19:53:13,400 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 19:53:13,403 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 19:53:13,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/nr3.c [2020-10-26 19:53:13,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c97895235/4baf45e6563e47a09381a720f82feddb/FLAG639c090fa [2020-10-26 19:53:14,082 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 19:53:14,083 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/nr3.c [2020-10-26 19:53:14,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c97895235/4baf45e6563e47a09381a720f82feddb/FLAG639c090fa [2020-10-26 19:53:14,466 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c97895235/4baf45e6563e47a09381a720f82feddb [2020-10-26 19:53:14,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 19:53:14,483 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 19:53:14,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 19:53:14,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 19:53:14,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 19:53:14,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:53:14" (1/1) ... [2020-10-26 19:53:14,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c23e508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:14, skipping insertion in model container [2020-10-26 19:53:14,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:53:14" (1/1) ... [2020-10-26 19:53:14,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 19:53:14,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 19:53:14,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:53:14,763 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 19:53:14,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:53:14,815 INFO L208 MainTranslator]: Completed translation [2020-10-26 19:53:14,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:14 WrapperNode [2020-10-26 19:53:14,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 19:53:14,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 19:53:14,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 19:53:14,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 19:53:14,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:14" (1/1) ... [2020-10-26 19:53:14,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:14" (1/1) ... [2020-10-26 19:53:14,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:14" (1/1) ... [2020-10-26 19:53:14,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:14" (1/1) ... [2020-10-26 19:53:14,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:14" (1/1) ... [2020-10-26 19:53:14,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:14" (1/1) ... [2020-10-26 19:53:14,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:14" (1/1) ... [2020-10-26 19:53:14,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 19:53:14,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 19:53:14,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 19:53:14,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 19:53:14,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:14" (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 [2020-10-26 19:53:14,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 19:53:14,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 19:53:14,954 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 19:53:14,954 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-26 19:53:14,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-26 19:53:14,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 19:53:14,955 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 19:53:14,955 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 19:53:14,955 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 19:53:14,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 19:53:14,955 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-26 19:53:14,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-26 19:53:14,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 19:53:14,956 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 19:53:14,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 19:53:14,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 19:53:14,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 19:53:14,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 19:53:14,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 19:53:14,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 19:53:15,482 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 19:53:15,482 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-26 19:53:15,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:53:15 BoogieIcfgContainer [2020-10-26 19:53:15,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 19:53:15,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 19:53:15,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 19:53:15,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 19:53:15,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:53:14" (1/3) ... [2020-10-26 19:53:15,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f37a159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:53:15, skipping insertion in model container [2020-10-26 19:53:15,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:14" (2/3) ... [2020-10-26 19:53:15,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f37a159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:53:15, skipping insertion in model container [2020-10-26 19:53:15,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:53:15" (3/3) ... [2020-10-26 19:53:15,502 INFO L111 eAbstractionObserver]: Analyzing ICFG nr3.c [2020-10-26 19:53:15,519 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 19:53:15,526 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 19:53:15,542 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 19:53:15,581 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 19:53:15,582 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 19:53:15,582 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 19:53:15,582 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 19:53:15,582 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 19:53:15,582 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 19:53:15,583 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 19:53:15,583 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 19:53:15,609 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-26 19:53:15,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-26 19:53:15,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:15,617 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] [2020-10-26 19:53:15,617 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:15,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:15,626 INFO L82 PathProgramCache]: Analyzing trace with hash -71068241, now seen corresponding path program 1 times [2020-10-26 19:53:15,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:15,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848969872] [2020-10-26 19:53:15,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:15,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:15,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:16,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:16,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 19:53:16,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:53:16,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-26 19:53:16,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:16,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:16,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 19:53:16,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:16,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 19:53:16,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:16,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:16,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:16,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:16,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:16,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 19:53:16,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:16,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:16,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:16,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:16,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:53:16,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:16,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:16,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:16,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:16,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:16,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 19:53:16,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:16,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:16,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-26 19:53:16,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:16,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:16,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:53:16,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848969872] [2020-10-26 19:53:16,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:53:16,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 19:53:16,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653980636] [2020-10-26 19:53:16,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 19:53:16,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:16,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 19:53:16,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 19:53:16,321 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-10-26 19:53:16,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:16,501 INFO L93 Difference]: Finished difference Result 68 states and 89 transitions. [2020-10-26 19:53:16,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 19:53:16,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-26 19:53:16,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:16,512 INFO L225 Difference]: With dead ends: 68 [2020-10-26 19:53:16,512 INFO L226 Difference]: Without dead ends: 32 [2020-10-26 19:53:16,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 19:53:16,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-26 19:53:16,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-26 19:53:16,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-26 19:53:16,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-26 19:53:16,576 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2020-10-26 19:53:16,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:16,577 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-26 19:53:16,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 19:53:16,578 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-26 19:53:16,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-26 19:53:16,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:16,582 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] [2020-10-26 19:53:16,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 19:53:16,582 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:16,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:16,585 INFO L82 PathProgramCache]: Analyzing trace with hash -2036094566, now seen corresponding path program 1 times [2020-10-26 19:53:16,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:16,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721027972] [2020-10-26 19:53:16,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:16,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:16,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:16,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:17,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:17,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:17,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 19:53:17,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:53:17,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1050 [2020-10-26 19:53:17,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:17,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:53:17,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:53:17,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 19:53:17,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:17,903 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 9 [2020-10-26 19:53:18,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:18,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:18,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:18,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:18,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:18,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:53:18,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:18,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:18,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:18,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:18,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:18,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:18,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:18,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:18,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:18,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:18,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 19:53:18,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:18,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:18,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:18,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:18,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:18,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:53:18,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721027972] [2020-10-26 19:53:18,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:53:18,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 19:53:18,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988165257] [2020-10-26 19:53:18,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 19:53:18,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:18,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 19:53:18,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:53:18,081 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 6 states. [2020-10-26 19:53:18,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:18,516 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2020-10-26 19:53:18,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 19:53:18,517 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-26 19:53:18,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:18,520 INFO L225 Difference]: With dead ends: 55 [2020-10-26 19:53:18,520 INFO L226 Difference]: Without dead ends: 42 [2020-10-26 19:53:18,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-26 19:53:18,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-26 19:53:18,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2020-10-26 19:53:18,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-26 19:53:18,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-26 19:53:18,536 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 23 [2020-10-26 19:53:18,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:18,536 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-26 19:53:18,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 19:53:18,536 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-26 19:53:18,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-26 19:53:18,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:18,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:53:18,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 19:53:18,538 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:18,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:18,539 INFO L82 PathProgramCache]: Analyzing trace with hash -640613893, now seen corresponding path program 1 times [2020-10-26 19:53:18,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:18,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502448746] [2020-10-26 19:53:18,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:18,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:18,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:18,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-26 19:53:18,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:18,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 19:53:18,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:18,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:18,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-26 19:53:18,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 19:53:18,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:18,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:18,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:18,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:18,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:18,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:18,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:53:18,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:18,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:18,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:18,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:18,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:18,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:18,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:18,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:18,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:18,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:18,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 19:53:18,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:18,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:18,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:18,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:18,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:18,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:53:18,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502448746] [2020-10-26 19:53:18,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:53:18,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 19:53:18,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679835466] [2020-10-26 19:53:18,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 19:53:18,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:18,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 19:53:18,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:53:18,773 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-10-26 19:53:18,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:18,878 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-10-26 19:53:18,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 19:53:18,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-26 19:53:18,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:18,881 INFO L225 Difference]: With dead ends: 54 [2020-10-26 19:53:18,882 INFO L226 Difference]: Without dead ends: 36 [2020-10-26 19:53:18,884 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 [2020-10-26 19:53:18,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-26 19:53:18,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-26 19:53:18,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-26 19:53:18,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-26 19:53:18,905 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 26 [2020-10-26 19:53:18,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:18,906 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-26 19:53:18,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 19:53:18,906 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-26 19:53:18,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-26 19:53:18,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:18,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:53:18,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 19:53:18,908 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:18,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:18,910 INFO L82 PathProgramCache]: Analyzing trace with hash 113037761, now seen corresponding path program 1 times [2020-10-26 19:53:18,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:18,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698817919] [2020-10-26 19:53:18,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:18,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:18,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:19,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:19,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:19,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-26 19:53:19,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 19:53:19,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 832 [2020-10-26 19:53:19,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:53:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:53:19,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-26 19:53:19,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:19,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:19,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:19,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:19,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:19,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:19,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:53:19,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:19,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:19,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:19,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:19,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:19,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:19,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:19,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:19,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:19,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:19,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:53:19,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:19,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:19,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:19,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:19,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:19,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:53:19,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698817919] [2020-10-26 19:53:19,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:53:19,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 19:53:19,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138559112] [2020-10-26 19:53:19,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 19:53:19,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:19,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 19:53:19,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:53:19,867 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 6 states. [2020-10-26 19:53:20,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:20,037 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-26 19:53:20,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 19:53:20,037 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-26 19:53:20,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:20,039 INFO L225 Difference]: With dead ends: 56 [2020-10-26 19:53:20,039 INFO L226 Difference]: Without dead ends: 37 [2020-10-26 19:53:20,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 19:53:20,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-26 19:53:20,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-26 19:53:20,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-26 19:53:20,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-10-26 19:53:20,049 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 29 [2020-10-26 19:53:20,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:20,049 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-10-26 19:53:20,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 19:53:20,049 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-10-26 19:53:20,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-26 19:53:20,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:20,051 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, 1, 1, 1, 1] [2020-10-26 19:53:20,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 19:53:20,051 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:20,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:20,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1768599869, now seen corresponding path program 1 times [2020-10-26 19:53:20,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:20,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446574385] [2020-10-26 19:53:20,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:20,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:20,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:20,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:20,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:20,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-26 19:53:20,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 19:53:20,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 806 [2020-10-26 19:53:20,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:53:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:53:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 19:53:20,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:20,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:20,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:20,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:20,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:20,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:20,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:53:20,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:20,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:20,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:20,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:20,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:53:20,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:20,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:20,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:20,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:20,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:20,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:53:20,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:20,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:20,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:20,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:20,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:20,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:53:20,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446574385] [2020-10-26 19:53:20,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:53:20,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 19:53:20,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511039184] [2020-10-26 19:53:20,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 19:53:20,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:20,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 19:53:20,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:53:20,968 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 6 states. [2020-10-26 19:53:21,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:21,136 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2020-10-26 19:53:21,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 19:53:21,136 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-26 19:53:21,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:21,137 INFO L225 Difference]: With dead ends: 62 [2020-10-26 19:53:21,137 INFO L226 Difference]: Without dead ends: 40 [2020-10-26 19:53:21,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 19:53:21,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-26 19:53:21,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-26 19:53:21,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-26 19:53:21,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-26 19:53:21,148 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 32 [2020-10-26 19:53:21,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:21,148 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-26 19:53:21,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 19:53:21,148 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-26 19:53:21,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-26 19:53:21,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:21,150 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, 1, 1, 1, 1] [2020-10-26 19:53:21,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 19:53:21,150 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:21,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:21,151 INFO L82 PathProgramCache]: Analyzing trace with hash 236000387, now seen corresponding path program 2 times [2020-10-26 19:53:21,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:21,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021545068] [2020-10-26 19:53:21,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:21,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:21,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:21,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:22,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:22,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-26 19:53:22,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 19:53:22,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1221 [2020-10-26 19:53:22,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:22,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 19:53:22,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:53:22,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-26 19:53:22,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:22,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:22,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:22,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:22,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:22,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:22,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:53:22,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:22,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:22,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:22,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:22,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:22,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:22,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:22,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:22,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:22,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:22,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:53:22,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:22,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:22,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:22,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:22,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:22,846 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:53:22,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021545068] [2020-10-26 19:53:22,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:53:22,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-26 19:53:22,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285471118] [2020-10-26 19:53:22,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 19:53:22,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:22,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 19:53:22,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-26 19:53:22,849 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 12 states. [2020-10-26 19:53:23,850 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-10-26 19:53:24,045 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2020-10-26 19:53:24,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:24,208 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2020-10-26 19:53:24,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 19:53:24,210 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2020-10-26 19:53:24,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:24,211 INFO L225 Difference]: With dead ends: 78 [2020-10-26 19:53:24,211 INFO L226 Difference]: Without dead ends: 66 [2020-10-26 19:53:24,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2020-10-26 19:53:24,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-26 19:53:24,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 42. [2020-10-26 19:53:24,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-26 19:53:24,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-26 19:53:24,223 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 35 [2020-10-26 19:53:24,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:24,224 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-26 19:53:24,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 19:53:24,224 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-26 19:53:24,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-26 19:53:24,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:24,225 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, 1, 1, 1, 1] [2020-10-26 19:53:24,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 19:53:24,225 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:24,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:24,226 INFO L82 PathProgramCache]: Analyzing trace with hash 178742085, now seen corresponding path program 1 times [2020-10-26 19:53:24,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:24,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061549572] [2020-10-26 19:53:24,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:24,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:24,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:24,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:24,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:25,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:25,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-26 19:53:25,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:53:25,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1377 [2020-10-26 19:53:25,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:25,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 19:53:25,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:53:25,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-26 19:53:25,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:53:26,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:26,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:26,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:26,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:26,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:26,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:53:26,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:26,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:26,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:26,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:26,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:26,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:26,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:26,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:26,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:26,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:26,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:53:26,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:26,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:26,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:26,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:26,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:26,297 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:53:26,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061549572] [2020-10-26 19:53:26,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:53:26,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-26 19:53:26,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336394340] [2020-10-26 19:53:26,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 19:53:26,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:26,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 19:53:26,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-26 19:53:26,300 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 14 states. [2020-10-26 19:53:26,596 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2020-10-26 19:53:26,796 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-10-26 19:53:27,012 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-10-26 19:53:27,237 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 39 [2020-10-26 19:53:27,535 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2020-10-26 19:53:28,021 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-10-26 19:53:28,211 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2020-10-26 19:53:28,567 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 23 [2020-10-26 19:53:29,097 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-10-26 19:53:29,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:29,701 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2020-10-26 19:53:29,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-26 19:53:29,702 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-10-26 19:53:29,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:29,703 INFO L225 Difference]: With dead ends: 75 [2020-10-26 19:53:29,703 INFO L226 Difference]: Without dead ends: 72 [2020-10-26 19:53:29,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=217, Invalid=973, Unknown=0, NotChecked=0, Total=1190 [2020-10-26 19:53:29,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-26 19:53:29,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 47. [2020-10-26 19:53:29,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-26 19:53:29,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-26 19:53:29,733 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 35 [2020-10-26 19:53:29,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:29,736 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-26 19:53:29,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 19:53:29,736 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-26 19:53:29,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-26 19:53:29,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:29,738 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:53:29,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 19:53:29,740 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:29,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:29,741 INFO L82 PathProgramCache]: Analyzing trace with hash 531437953, now seen corresponding path program 1 times [2020-10-26 19:53:29,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:29,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136538821] [2020-10-26 19:53:29,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:29,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:29,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:29,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:30,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:31,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:32,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:32,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-26 19:53:32,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 19:53:32,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2729 [2020-10-26 19:53:32,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:32,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 19:53:32,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:53:32,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-26 19:53:32,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:32,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:32,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:32,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:32,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:32,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:32,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:53:32,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:32,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:32,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:32,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:32,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:32,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:32,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:32,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:32,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:32,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:32,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:53:32,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:32,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:32,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:32,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:32,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:32,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-26 19:53:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:32,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:32,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:32,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:32,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:32,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:53:32,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:32,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:32,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:32,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:32,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:32,818 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-26 19:53:32,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136538821] [2020-10-26 19:53:32,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:53:32,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 19:53:32,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151100417] [2020-10-26 19:53:32,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 19:53:32,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:32,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 19:53:32,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-26 19:53:32,821 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 11 states. [2020-10-26 19:53:34,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:34,069 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2020-10-26 19:53:34,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 19:53:34,070 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-10-26 19:53:34,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:34,072 INFO L225 Difference]: With dead ends: 87 [2020-10-26 19:53:34,072 INFO L226 Difference]: Without dead ends: 70 [2020-10-26 19:53:34,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2020-10-26 19:53:34,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-26 19:53:34,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 52. [2020-10-26 19:53:34,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-26 19:53:34,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-10-26 19:53:34,085 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 44 [2020-10-26 19:53:34,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:34,085 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-10-26 19:53:34,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 19:53:34,086 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-10-26 19:53:34,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-26 19:53:34,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:34,088 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:53:34,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 19:53:34,088 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:34,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:34,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1540107709, now seen corresponding path program 2 times [2020-10-26 19:53:34,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:34,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177337385] [2020-10-26 19:53:34,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:34,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:34,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:34,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:34,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:34,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:37,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:37,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:37,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:37,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:37,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:38,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:39,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:39,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-26 19:53:39,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-26 19:53:39,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-26 19:53:39,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:39,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 19:53:39,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:53:39,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-26 19:53:39,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:39,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:39,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:39,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:39,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:39,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:39,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 19:53:39,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:39,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:39,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:39,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:39,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:39,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:39,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:39,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:39,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:39,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:39,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:53:39,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:39,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:39,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:39,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:39,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:39,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-26 19:53:39,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:39,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:39,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:39,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:39,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:39,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:53:39,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:39,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:39,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:39,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:39,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:39,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-26 19:53:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:39,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:39,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:39,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:39,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:39,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:53:39,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:39,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:39,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:39,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:39,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:39,579 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-26 19:53:39,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177337385] [2020-10-26 19:53:39,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:53:39,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-26 19:53:39,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647213734] [2020-10-26 19:53:39,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 19:53:39,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:39,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 19:53:39,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-26 19:53:39,585 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 14 states. [2020-10-26 19:53:41,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:41,380 INFO L93 Difference]: Finished difference Result 101 states and 117 transitions. [2020-10-26 19:53:41,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-26 19:53:41,381 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-10-26 19:53:41,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:41,384 INFO L225 Difference]: With dead ends: 101 [2020-10-26 19:53:41,384 INFO L226 Difference]: Without dead ends: 98 [2020-10-26 19:53:41,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=158, Invalid=834, Unknown=0, NotChecked=0, Total=992 [2020-10-26 19:53:41,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-26 19:53:41,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 82. [2020-10-26 19:53:41,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-26 19:53:41,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2020-10-26 19:53:41,406 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 53 [2020-10-26 19:53:41,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:41,406 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2020-10-26 19:53:41,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 19:53:41,406 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2020-10-26 19:53:41,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-26 19:53:41,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:41,410 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:53:41,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 19:53:41,411 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:41,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:41,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1931126851, now seen corresponding path program 3 times [2020-10-26 19:53:41,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:41,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541609818] [2020-10-26 19:53:41,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:41,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:41,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:42,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:42,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 19:53:42,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:53:42,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-10-26 19:53:42,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:42,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 19:53:42,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:53:42,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-26 19:53:42,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:42,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:42,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:42,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:42,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:42,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:42,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:53:42,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:42,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:42,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:42,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:42,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:42,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:42,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:42,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:42,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:42,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:42,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:53:42,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 19:53:42,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:42,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:53:42,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:42,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 19:53:42,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:42,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-26 19:53:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:42,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:42,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:42,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:42,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:42,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:53:42,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:42,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:42,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:42,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:42,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:42,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-26 19:53:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:42,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:42,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:42,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:42,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:42,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:53:42,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:42,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:42,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:42,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:42,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:42,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-26 19:53:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:42,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:42,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:42,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:42,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:42,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:53:42,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:42,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:42,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:42,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:42,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:42,512 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-26 19:53:42,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541609818] [2020-10-26 19:53:42,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:53:42,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 19:53:42,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553308286] [2020-10-26 19:53:42,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 19:53:42,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:42,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 19:53:42,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-26 19:53:42,516 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand 13 states. [2020-10-26 19:53:43,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:43,872 INFO L93 Difference]: Finished difference Result 121 states and 136 transitions. [2020-10-26 19:53:43,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 19:53:43,873 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2020-10-26 19:53:43,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:43,874 INFO L225 Difference]: With dead ends: 121 [2020-10-26 19:53:43,875 INFO L226 Difference]: Without dead ends: 78 [2020-10-26 19:53:43,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2020-10-26 19:53:43,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-26 19:53:43,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 64. [2020-10-26 19:53:43,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-26 19:53:43,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 71 transitions. [2020-10-26 19:53:43,892 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 71 transitions. Word has length 62 [2020-10-26 19:53:43,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:43,892 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 71 transitions. [2020-10-26 19:53:43,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 19:53:43,893 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 71 transitions. [2020-10-26 19:53:43,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-26 19:53:43,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:43,894 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:53:43,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 19:53:43,894 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:43,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:43,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1716912276, now seen corresponding path program 4 times [2020-10-26 19:53:43,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:43,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209250158] [2020-10-26 19:53:43,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:43,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:44,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:44,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:44,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:44,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:44,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:46,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:46,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:46,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:46,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:46,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:47,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:47,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:48,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:48,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 19:53:48,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-26 19:53:48,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 19:53:48,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:48,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-26 19:53:48,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:53:48,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-26 19:53:48,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:49,388 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-26 19:53:49,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:49,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:49,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:49,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:49,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:49,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:53:49,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:49,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:49,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:49,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:49,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:49,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:49,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:49,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:49,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:49,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:49,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:53:49,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:49,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:49,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 19:53:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:49,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:49,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:49,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:49,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:49,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:53:49,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:49,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:49,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:49,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:49,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:49,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-26 19:53:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:49,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:49,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:49,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:49,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:49,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:53:49,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:49,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:49,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:49,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:49,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:50,013 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 6 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 19:53:50,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209250158] [2020-10-26 19:53:50,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:53:50,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-26 19:53:50,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678179239] [2020-10-26 19:53:50,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-26 19:53:50,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:50,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-26 19:53:50,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2020-10-26 19:53:50,016 INFO L87 Difference]: Start difference. First operand 64 states and 71 transitions. Second operand 20 states. [2020-10-26 19:53:51,181 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 26 [2020-10-26 19:53:52,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:52,537 INFO L93 Difference]: Finished difference Result 160 states and 188 transitions. [2020-10-26 19:53:52,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-26 19:53:52,544 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 65 [2020-10-26 19:53:52,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:52,545 INFO L225 Difference]: With dead ends: 160 [2020-10-26 19:53:52,545 INFO L226 Difference]: Without dead ends: 116 [2020-10-26 19:53:52,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=244, Invalid=1162, Unknown=0, NotChecked=0, Total=1406 [2020-10-26 19:53:52,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-26 19:53:52,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 101. [2020-10-26 19:53:52,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-26 19:53:52,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2020-10-26 19:53:52,571 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 65 [2020-10-26 19:53:52,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:52,572 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2020-10-26 19:53:52,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-26 19:53:52,572 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2020-10-26 19:53:52,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-26 19:53:52,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:52,574 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:53:52,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 19:53:52,574 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:52,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:52,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1503941388, now seen corresponding path program 5 times [2020-10-26 19:53:52,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:52,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964075179] [2020-10-26 19:53:52,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:52,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:52,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:52,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:52,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:52,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:52,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:53,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:53,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:54,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:54,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:55,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:57,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:57,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 19:53:57,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-26 19:53:57,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 19:53:57,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:57,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 19:53:57,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:53:57,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-26 19:53:57,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-26 19:53:57,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:53:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:57,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:57,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:57,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:53:57,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:57,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:53:57,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:57,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:57,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:57,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:57,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:57,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:53:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:57,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:57,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:57,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:57,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:57,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:53:57,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:57,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:53:57,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:53:57,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:53:57,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:57,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-26 19:53:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:57,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:57,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:57,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:57,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:57,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:53:57,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:57,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:57,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:53:57,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:57,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:57,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:53:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:57,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:57,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:53:57,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:53:57,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:53:57,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:53:57,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:53:57,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:53:57,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:53:57,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:53:57,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:53:57,766 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 44 proven. 27 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-26 19:53:57,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964075179] [2020-10-26 19:53:57,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:53:57,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 19:53:57,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346150074] [2020-10-26 19:53:57,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 19:53:57,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:53:57,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 19:53:57,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 19:53:57,769 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand 7 states. [2020-10-26 19:53:58,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:53:58,043 INFO L93 Difference]: Finished difference Result 154 states and 179 transitions. [2020-10-26 19:53:58,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 19:53:58,044 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-26 19:53:58,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:53:58,046 INFO L225 Difference]: With dead ends: 154 [2020-10-26 19:53:58,046 INFO L226 Difference]: Without dead ends: 76 [2020-10-26 19:53:58,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-26 19:53:58,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-26 19:53:58,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-10-26 19:53:58,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-26 19:53:58,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2020-10-26 19:53:58,080 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 68 [2020-10-26 19:53:58,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:53:58,081 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2020-10-26 19:53:58,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 19:53:58,081 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2020-10-26 19:53:58,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-26 19:53:58,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:53:58,084 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:53:58,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 19:53:58,085 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:53:58,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:53:58,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1258961210, now seen corresponding path program 6 times [2020-10-26 19:53:58,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:53:58,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300220527] [2020-10-26 19:53:58,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:53:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:53:58,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:58,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:58,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:58,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:58,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:58,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:58,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:58,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:58,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:59,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:53:59,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:01,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:01,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:01,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:01,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:03,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:03,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 19:54:03,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-26 19:54:03,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 19:54:03,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:03,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 19:54:03,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:54:03,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 19:54:03,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:03,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:03,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:03,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:03,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:03,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:03,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:54:03,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:03,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:03,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:03,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:03,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:03,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:03,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:03,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:03,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:03,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:03,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:54:03,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:03,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:03,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 19:54:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:03,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:03,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:03,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:03,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:03,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:03,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:03,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:03,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:03,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:03,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:03,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-26 19:54:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:03,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:03,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:03,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:03,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:03,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:03,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:03,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:03,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:03,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:03,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:03,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-26 19:54:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:03,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:03,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:03,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:03,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:03,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:03,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:03,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:03,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:03,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:03,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:03,803 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 9 proven. 71 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-26 19:54:03,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300220527] [2020-10-26 19:54:03,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:03,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-26 19:54:03,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51010687] [2020-10-26 19:54:03,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-26 19:54:03,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:03,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-26 19:54:03,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-26 19:54:03,806 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand 16 states. [2020-10-26 19:54:06,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:54:06,970 INFO L93 Difference]: Finished difference Result 121 states and 134 transitions. [2020-10-26 19:54:06,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-26 19:54:06,971 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 74 [2020-10-26 19:54:06,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:54:06,973 INFO L225 Difference]: With dead ends: 121 [2020-10-26 19:54:06,973 INFO L226 Difference]: Without dead ends: 104 [2020-10-26 19:54:06,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=229, Invalid=1411, Unknown=0, NotChecked=0, Total=1640 [2020-10-26 19:54:06,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-26 19:54:06,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 79. [2020-10-26 19:54:06,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-26 19:54:06,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2020-10-26 19:54:06,990 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 74 [2020-10-26 19:54:06,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:54:06,990 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2020-10-26 19:54:06,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-26 19:54:06,991 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2020-10-26 19:54:06,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-26 19:54:06,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:54:06,992 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:54:06,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 19:54:06,992 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:54:06,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:54:06,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1597788842, now seen corresponding path program 7 times [2020-10-26 19:54:06,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:54:06,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636667432] [2020-10-26 19:54:06,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:54:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:07,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:07,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:07,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:07,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:07,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:07,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:07,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:08,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:08,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:08,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:08,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:09,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:09,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:09,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:09,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:09,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:10,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:10,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:10,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:12,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:12,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-26 19:54:12,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-26 19:54:12,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 19:54:12,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-26 19:54:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:54:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 19:54:12,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:12,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:12,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:12,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:12,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:12,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:12,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 19:54:12,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:12,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:12,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:12,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:12,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:12,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:12,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:12,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:12,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:12,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:12,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:54:12,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:12,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:12,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:12,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:12,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:12,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 19:54:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:12,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:12,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:12,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:12,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:12,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:12,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:12,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:12,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:12,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:12,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:12,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-26 19:54:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:12,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:12,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:12,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:12,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:12,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:12,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:12,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:12,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:12,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:12,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:12,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-26 19:54:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:12,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:12,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:12,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:12,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:12,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:12,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:12,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:12,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:12,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:12,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:12,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-26 19:54:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:12,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:12,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:12,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:12,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:12,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:12,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:12,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:12,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:12,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:12,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:12,619 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 12 proven. 86 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-26 19:54:12,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636667432] [2020-10-26 19:54:12,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:12,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-26 19:54:12,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745040450] [2020-10-26 19:54:12,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-26 19:54:12,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:12,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-26 19:54:12,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-26 19:54:12,621 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand 15 states. [2020-10-26 19:54:15,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:54:15,053 INFO L93 Difference]: Finished difference Result 128 states and 142 transitions. [2020-10-26 19:54:15,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-26 19:54:15,055 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 83 [2020-10-26 19:54:15,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:54:15,057 INFO L225 Difference]: With dead ends: 128 [2020-10-26 19:54:15,057 INFO L226 Difference]: Without dead ends: 111 [2020-10-26 19:54:15,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=177, Invalid=1013, Unknown=0, NotChecked=0, Total=1190 [2020-10-26 19:54:15,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-26 19:54:15,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 84. [2020-10-26 19:54:15,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-26 19:54:15,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2020-10-26 19:54:15,073 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 83 [2020-10-26 19:54:15,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:54:15,073 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2020-10-26 19:54:15,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-26 19:54:15,074 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2020-10-26 19:54:15,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-26 19:54:15,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:54:15,075 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:54:15,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 19:54:15,075 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:54:15,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:54:15,076 INFO L82 PathProgramCache]: Analyzing trace with hash -277358790, now seen corresponding path program 8 times [2020-10-26 19:54:15,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:54:15,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937806488] [2020-10-26 19:54:15,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:54:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:15,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:15,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:15,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:15,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:15,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:15,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:15,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:16,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:16,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:16,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:16,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:16,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:17,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:19,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:19,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:19,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:19,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:19,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:19,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:19,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:19,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:20,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:20,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-26 19:54:20,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-26 19:54:20,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-26 19:54:20,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-26 19:54:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:54:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-26 19:54:20,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:20,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:20,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:20,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:20,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:20,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:20,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:20,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:20,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:20,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:20,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:20,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:20,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:20,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:20,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:20,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:20,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:20,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:20,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:20,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:20,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:20,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:20,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:20,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 19:54:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:20,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:20,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:20,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:20,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:20,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:20,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:20,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:20,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:20,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:20,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:20,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-26 19:54:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:20,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:20,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:20,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:20,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:20,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:20,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:20,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:20,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:20,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:20,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:20,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-26 19:54:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:20,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:20,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:20,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:20,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:20,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:20,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:20,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:20,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:20,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:20,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:20,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-26 19:54:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:20,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:20,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:20,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:20,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:20,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:20,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:20,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:20,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:20,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:20,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:20,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:54:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:20,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:20,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:20,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:20,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:20,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:20,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:20,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:20,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:20,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:20,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:20,614 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 10 proven. 110 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-26 19:54:20,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937806488] [2020-10-26 19:54:20,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:20,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-26 19:54:20,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893337669] [2020-10-26 19:54:20,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-26 19:54:20,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:20,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-26 19:54:20,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-26 19:54:20,616 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand 17 states. [2020-10-26 19:54:23,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:54:23,061 INFO L93 Difference]: Finished difference Result 149 states and 172 transitions. [2020-10-26 19:54:23,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-26 19:54:23,063 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 92 [2020-10-26 19:54:23,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:54:23,064 INFO L225 Difference]: With dead ends: 149 [2020-10-26 19:54:23,064 INFO L226 Difference]: Without dead ends: 146 [2020-10-26 19:54:23,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=179, Invalid=1227, Unknown=0, NotChecked=0, Total=1406 [2020-10-26 19:54:23,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-26 19:54:23,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 130. [2020-10-26 19:54:23,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-26 19:54:23,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2020-10-26 19:54:23,093 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 92 [2020-10-26 19:54:23,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:54:23,093 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2020-10-26 19:54:23,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-26 19:54:23,093 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2020-10-26 19:54:23,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-26 19:54:23,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:54:23,095 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:54:23,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 19:54:23,095 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:54:23,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:54:23,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1828145452, now seen corresponding path program 9 times [2020-10-26 19:54:23,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:54:23,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4190114] [2020-10-26 19:54:23,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:54:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:23,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:23,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:23,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:23,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-26 19:54:23,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:54:23,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 682 [2020-10-26 19:54:23,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:23,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-26 19:54:23,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:54:23,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-26 19:54:23,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:24,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:24,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:24,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:24,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:24,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:24,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:24,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:24,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:24,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:24,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:24,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:24,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:24,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:24,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:24,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:24,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:24,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:54:24,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 19:54:24,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:24,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:54:24,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:24,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 19:54:24,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:24,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 19:54:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:24,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:24,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:24,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:24,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:24,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:24,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:24,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:24,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:24,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:24,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:24,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-26 19:54:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:24,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:24,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:24,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:24,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:24,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:24,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:24,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:24,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:24,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:24,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:24,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-26 19:54:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:24,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:24,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:24,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:24,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:24,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:24,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:24,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:24,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-26 19:54:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:24,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:24,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:24,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:24,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:24,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:24,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:24,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:24,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:24,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:24,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:24,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:54:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:24,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:24,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:24,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:24,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:24,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:24,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:24,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:24,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:24,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:24,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:24,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-26 19:54:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:24,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:24,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:24,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:24,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:24,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:24,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:24,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:24,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:24,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:24,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:24,581 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 105 proven. 38 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-26 19:54:24,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4190114] [2020-10-26 19:54:24,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:24,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-26 19:54:24,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071917042] [2020-10-26 19:54:24,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-26 19:54:24,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:24,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-26 19:54:24,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-26 19:54:24,583 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand 17 states. [2020-10-26 19:54:26,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:54:26,308 INFO L93 Difference]: Finished difference Result 170 states and 190 transitions. [2020-10-26 19:54:26,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 19:54:26,309 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 101 [2020-10-26 19:54:26,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:54:26,310 INFO L225 Difference]: With dead ends: 170 [2020-10-26 19:54:26,311 INFO L226 Difference]: Without dead ends: 107 [2020-10-26 19:54:26,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=196, Invalid=860, Unknown=0, NotChecked=0, Total=1056 [2020-10-26 19:54:26,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-26 19:54:26,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 96. [2020-10-26 19:54:26,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-26 19:54:26,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2020-10-26 19:54:26,332 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 101 [2020-10-26 19:54:26,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:54:26,332 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions. [2020-10-26 19:54:26,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-26 19:54:26,333 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions. [2020-10-26 19:54:26,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-26 19:54:26,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:54:26,334 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:54:26,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 19:54:26,334 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:54:26,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:54:26,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1738236431, now seen corresponding path program 10 times [2020-10-26 19:54:26,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:54:26,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451927887] [2020-10-26 19:54:26,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:54:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:26,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:26,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:26,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:26,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:26,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:26,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:26,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:26,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:27,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:27,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:27,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:28,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:28,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:28,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:28,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:31,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:31,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-26 19:54:31,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-26 19:54:31,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-26 19:54:31,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:31,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-26 19:54:31,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:54:31,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 19:54:31,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:32,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:32,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:32,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:32,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:32,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:32,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:54:32,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:32,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:32,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:32,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:32,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:32,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:32,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:32,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:32,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:32,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:32,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:54:32,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:32,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:32,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:32,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:32,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:32,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:54:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:32,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:32,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:32,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:32,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:32,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:32,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:32,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:32,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:32,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:32,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:32,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:54:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:32,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:32,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:32,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:32,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:32,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:32,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:32,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:32,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:32,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:32,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:32,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:54:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:32,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:32,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:32,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:32,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:32,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:32,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:32,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:32,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:32,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:32,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:32,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:54:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:32,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:32,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:32,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:32,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:32,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:32,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:32,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:32,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:32,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:32,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:32,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:54:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:32,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:32,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:32,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:32,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:32,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:32,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:32,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:32,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:32,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:32,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:32,333 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 12 proven. 195 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-26 19:54:32,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451927887] [2020-10-26 19:54:32,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:32,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-26 19:54:32,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570893274] [2020-10-26 19:54:32,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-26 19:54:32,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:32,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-26 19:54:32,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2020-10-26 19:54:32,335 INFO L87 Difference]: Start difference. First operand 96 states and 106 transitions. Second operand 23 states. [2020-10-26 19:54:36,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:54:36,591 INFO L93 Difference]: Finished difference Result 118 states and 131 transitions. [2020-10-26 19:54:36,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-26 19:54:36,592 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 104 [2020-10-26 19:54:36,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:54:36,594 INFO L225 Difference]: With dead ends: 118 [2020-10-26 19:54:36,594 INFO L226 Difference]: Without dead ends: 115 [2020-10-26 19:54:36,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=402, Invalid=2250, Unknown=0, NotChecked=0, Total=2652 [2020-10-26 19:54:36,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-26 19:54:36,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 106. [2020-10-26 19:54:36,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-26 19:54:36,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 118 transitions. [2020-10-26 19:54:36,613 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 118 transitions. Word has length 104 [2020-10-26 19:54:36,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:54:36,613 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 118 transitions. [2020-10-26 19:54:36,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-26 19:54:36,614 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 118 transitions. [2020-10-26 19:54:36,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-26 19:54:36,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:54:36,615 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:54:36,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 19:54:36,615 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:54:36,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:54:36,616 INFO L82 PathProgramCache]: Analyzing trace with hash 2072584277, now seen corresponding path program 11 times [2020-10-26 19:54:36,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:54:36,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457525390] [2020-10-26 19:54:36,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:54:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:36,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:36,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:36,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:37,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:37,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:37,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:37,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:37,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:37,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:37,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:38,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:38,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:38,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:38,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:38,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:39,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:41,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:41,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-26 19:54:41,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-26 19:54:41,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 19:54:41,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:41,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-26 19:54:41,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:54:41,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-26 19:54:41,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:42,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:42,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:42,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:42,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:42,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:42,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:42,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:42,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:42,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:42,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:42,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:42,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:42,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:42,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:42,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:42,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:42,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:42,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:42,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:42,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:42,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:54:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:42,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:42,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:42,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:42,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:42,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:42,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:42,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:42,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:42,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:42,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:54:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:42,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:42,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:42,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:42,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:42,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:42,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:42,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:42,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:42,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:42,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:54:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:42,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:42,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:42,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:42,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:42,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:42,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:42,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:42,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:42,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:42,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:54:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:42,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:42,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:42,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:42,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:42,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:42,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:42,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:42,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:42,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:42,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:54:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:42,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:42,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:42,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:42,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:42,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:42,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:42,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:42,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:42,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:42,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:54:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:42,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:42,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:42,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:42,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:42,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:42,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:42,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:42,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:42,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:42,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:42,562 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 18 proven. 210 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-26 19:54:42,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457525390] [2020-10-26 19:54:42,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:42,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-26 19:54:42,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334231849] [2020-10-26 19:54:42,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-26 19:54:42,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:42,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-26 19:54:42,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-26 19:54:42,569 INFO L87 Difference]: Start difference. First operand 106 states and 118 transitions. Second operand 20 states. [2020-10-26 19:54:47,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:54:47,450 INFO L93 Difference]: Finished difference Result 154 states and 172 transitions. [2020-10-26 19:54:47,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-26 19:54:47,452 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 113 [2020-10-26 19:54:47,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:54:47,454 INFO L225 Difference]: With dead ends: 154 [2020-10-26 19:54:47,454 INFO L226 Difference]: Without dead ends: 137 [2020-10-26 19:54:47,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=300, Invalid=2562, Unknown=0, NotChecked=0, Total=2862 [2020-10-26 19:54:47,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-26 19:54:47,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 111. [2020-10-26 19:54:47,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-26 19:54:47,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 124 transitions. [2020-10-26 19:54:47,475 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 124 transitions. Word has length 113 [2020-10-26 19:54:47,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:54:47,475 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 124 transitions. [2020-10-26 19:54:47,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-26 19:54:47,475 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 124 transitions. [2020-10-26 19:54:47,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-26 19:54:47,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:54:47,477 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 6, 5, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:54:47,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 19:54:47,477 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:54:47,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:54:47,477 INFO L82 PathProgramCache]: Analyzing trace with hash -447727121, now seen corresponding path program 12 times [2020-10-26 19:54:47,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:54:47,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972959146] [2020-10-26 19:54:47,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:54:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:47,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:47,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:47,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:47,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:47,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:47,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:47,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:48,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:48,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:48,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:48,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:49,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:50,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:50,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:50,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:50,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:50,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:50,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:51,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:51,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:52,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:52,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 19:54:52,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-26 19:54:52,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-26 19:54:52,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:52,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 19:54:52,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:54:52,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 19:54:52,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:53,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:54:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:53,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:53,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:53,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:54:53,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:53,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:53,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:53,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:54:53,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:53,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:54:53,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:53,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:54:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:53,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:53,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:53,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:53,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:53,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:54:53,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:53,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:53,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:53,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:53,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:53,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:54:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:53,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:53,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:53,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:53,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:53,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:53,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:53,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:53,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:53,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:53,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:53,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:54:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:53,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:53,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:53,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:53,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:53,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:53,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:53,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:53,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:53,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:53,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:53,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:54:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:53,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:53,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:53,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:53,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:53,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:53,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:53,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:53,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:53,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:53,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:53,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:54:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:53,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:53,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:53,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:53,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:53,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:53,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:53,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:53,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:53,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:53,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:53,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:54:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:53,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:53,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:53,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:53,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:53,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:53,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:53,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:53,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:53,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:53,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:53,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:54:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:53,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:53,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:53,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:53,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:53,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:54:53,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:53,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:53,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:53,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:53,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:53,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:54:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:53,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:53,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:54:53,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:54:53,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:54:53,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:54:53,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:54:53,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:54:53,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:54:53,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:54:53,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:54:53,348 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 21 proven. 240 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 19:54:53,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972959146] [2020-10-26 19:54:53,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:54:53,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-26 19:54:53,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56380745] [2020-10-26 19:54:53,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-26 19:54:53,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:54:53,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-26 19:54:53,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-26 19:54:53,350 INFO L87 Difference]: Start difference. First operand 111 states and 124 transitions. Second operand 19 states. [2020-10-26 19:54:57,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:54:57,430 INFO L93 Difference]: Finished difference Result 161 states and 180 transitions. [2020-10-26 19:54:57,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-26 19:54:57,432 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2020-10-26 19:54:57,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:54:57,433 INFO L225 Difference]: With dead ends: 161 [2020-10-26 19:54:57,433 INFO L226 Difference]: Without dead ends: 144 [2020-10-26 19:54:57,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=241, Invalid=2015, Unknown=0, NotChecked=0, Total=2256 [2020-10-26 19:54:57,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-26 19:54:57,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 116. [2020-10-26 19:54:57,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-26 19:54:57,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 130 transitions. [2020-10-26 19:54:57,459 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 130 transitions. Word has length 122 [2020-10-26 19:54:57,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:54:57,460 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 130 transitions. [2020-10-26 19:54:57,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-26 19:54:57,460 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 130 transitions. [2020-10-26 19:54:57,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-26 19:54:57,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:54:57,461 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 6, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:54:57,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 19:54:57,462 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:54:57,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:54:57,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1415361131, now seen corresponding path program 13 times [2020-10-26 19:54:57,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:54:57,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042913614] [2020-10-26 19:54:57,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:54:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:54:57,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:57,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:57,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:57,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:57,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:57,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:57,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:57,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:58,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:59,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:59,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:54:59,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:02,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:02,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-26 19:55:02,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-26 19:55:02,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-26 19:55:02,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:02,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 19:55:02,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:55:02,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-26 19:55:02,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:03,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:55:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:03,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:03,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:03,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:55:03,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:03,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 19:55:03,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:03,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:55:03,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:03,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:55:03,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:03,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:55:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:03,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:03,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:03,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:03,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:03,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:03,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:03,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:03,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:03,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:03,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:03,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:55:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:03,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:03,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:03,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:03,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:03,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:03,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:03,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:03,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:03,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:03,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:03,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:55:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:03,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:03,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:03,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:03,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:03,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:03,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:03,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:03,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:03,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:03,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:03,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:55:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:03,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:03,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:03,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:03,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:03,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:03,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:03,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:03,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:03,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:03,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:03,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:55:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:03,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:03,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:03,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:03,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:03,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:03,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:03,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:03,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:03,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:03,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:03,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:55:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:03,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:03,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:03,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:03,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:03,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:03,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:03,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:03,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:03,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:03,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:03,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:55:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:03,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:03,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:03,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:03,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:03,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:03,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:03,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:03,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:03,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:03,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:03,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:55:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:03,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:03,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:03,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:03,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:03,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:03,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:03,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:03,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:03,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:03,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:03,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:55:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:03,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:03,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:03,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:03,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:03,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:03,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:03,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:03,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:03,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:03,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:03,476 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 16 proven. 285 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-10-26 19:55:03,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042913614] [2020-10-26 19:55:03,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:55:03,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-26 19:55:03,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265345390] [2020-10-26 19:55:03,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-26 19:55:03,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:55:03,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-26 19:55:03,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-26 19:55:03,479 INFO L87 Difference]: Start difference. First operand 116 states and 130 transitions. Second operand 22 states. [2020-10-26 19:55:08,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:55:08,009 INFO L93 Difference]: Finished difference Result 199 states and 232 transitions. [2020-10-26 19:55:08,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-26 19:55:08,010 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 131 [2020-10-26 19:55:08,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:55:08,012 INFO L225 Difference]: With dead ends: 199 [2020-10-26 19:55:08,012 INFO L226 Difference]: Without dead ends: 196 [2020-10-26 19:55:08,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=263, Invalid=2493, Unknown=0, NotChecked=0, Total=2756 [2020-10-26 19:55:08,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-26 19:55:08,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 178. [2020-10-26 19:55:08,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-26 19:55:08,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 207 transitions. [2020-10-26 19:55:08,049 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 207 transitions. Word has length 131 [2020-10-26 19:55:08,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:55:08,050 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 207 transitions. [2020-10-26 19:55:08,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-26 19:55:08,050 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 207 transitions. [2020-10-26 19:55:08,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-26 19:55:08,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:55:08,051 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 6, 6, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:55:08,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 19:55:08,052 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:55:08,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:55:08,052 INFO L82 PathProgramCache]: Analyzing trace with hash -513029839, now seen corresponding path program 14 times [2020-10-26 19:55:08,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:55:08,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279834915] [2020-10-26 19:55:08,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:55:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:08,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:08,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:09,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:09,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-26 19:55:09,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:55:09,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1746 [2020-10-26 19:55:09,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:09,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 19:55:09,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:55:09,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-26 19:55:09,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:11,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:55:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:11,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:11,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:55:11,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:11,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:11,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:11,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:55:11,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:11,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:55:11,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:11,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:55:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:11,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:11,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:11,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:55:11,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:55:11,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:11,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:11,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:11,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:11,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:11,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:55:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:11,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:11,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:11,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:11,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:55:11,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:11,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:11,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:11,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:11,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:11,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 19:55:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:11,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:11,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:11,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:11,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:55:11,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:11,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:11,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:11,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:11,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:11,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:55:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:11,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:11,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:11,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:11,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:11,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:11,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:11,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:11,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:11,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:11,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 19:55:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:11,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:11,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:11,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:11,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:11,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:11,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:11,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:11,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:11,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:11,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:55:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:11,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:11,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:11,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:11,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:11,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:11,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:11,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:11,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:11,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:11,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 19:55:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:11,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:11,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:11,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:11,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:11,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:11,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:11,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:11,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:11,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:11,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:55:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:11,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:11,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:11,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:11,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:11,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:11,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:11,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:11,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:11,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:11,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 19:55:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:11,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:11,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:11,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:11,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:11,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:11,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:11,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:11,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:11,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:11,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 19:55:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:11,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:11,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:11,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:11,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:11,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:11,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:11,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:11,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:11,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:11,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:11,478 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 225 proven. 111 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-26 19:55:11,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279834915] [2020-10-26 19:55:11,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:55:11,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-26 19:55:11,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043171407] [2020-10-26 19:55:11,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-26 19:55:11,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:55:11,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-26 19:55:11,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-10-26 19:55:11,481 INFO L87 Difference]: Start difference. First operand 178 states and 207 transitions. Second operand 19 states. [2020-10-26 19:55:12,715 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2020-10-26 19:55:14,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:55:14,044 INFO L93 Difference]: Finished difference Result 222 states and 251 transitions. [2020-10-26 19:55:14,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-26 19:55:14,046 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 140 [2020-10-26 19:55:14,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:55:14,048 INFO L225 Difference]: With dead ends: 222 [2020-10-26 19:55:14,048 INFO L226 Difference]: Without dead ends: 139 [2020-10-26 19:55:14,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2020-10-26 19:55:14,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-26 19:55:14,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 128. [2020-10-26 19:55:14,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-26 19:55:14,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 143 transitions. [2020-10-26 19:55:14,073 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 143 transitions. Word has length 140 [2020-10-26 19:55:14,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:55:14,073 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 143 transitions. [2020-10-26 19:55:14,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-26 19:55:14,074 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 143 transitions. [2020-10-26 19:55:14,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-26 19:55:14,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:55:14,075 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 8, 8, 8, 8, 8, 8, 6, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:55:14,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 19:55:14,075 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:55:14,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:55:14,076 INFO L82 PathProgramCache]: Analyzing trace with hash 2146105086, now seen corresponding path program 15 times [2020-10-26 19:55:14,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:55:14,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455440365] [2020-10-26 19:55:14,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:55:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:14,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:14,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:14,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:14,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:14,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:14,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:14,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:15,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:15,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:16,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:16,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:17,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:17,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:17,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:18,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:19,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:19,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:19,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-26 19:55:19,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-26 19:55:19,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5168 [2020-10-26 19:55:19,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:19,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-26 19:55:19,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:55:19,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-26 19:55:19,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:20,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:55:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:20,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:20,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:20,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:55:20,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:20,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:20,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:20,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:55:20,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:20,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:55:20,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:20,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:55:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:20,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:20,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:20,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:20,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:20,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:20,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:20,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:20,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:20,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:20,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:20,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:55:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:20,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:20,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:20,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:20,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:20,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:20,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:20,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:20,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:20,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:20,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:20,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-26 19:55:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:20,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:20,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:20,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:20,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:20,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:20,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:20,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:20,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:20,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:20,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:20,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-26 19:55:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:20,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:20,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:20,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:20,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:20,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 19:55:20,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:20,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:20,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:20,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:20,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:20,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-26 19:55:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:20,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:20,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:20,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:20,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:20,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:20,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:20,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:20,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:20,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:20,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:20,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-26 19:55:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:20,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:20,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:20,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:20,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:20,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:20,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:20,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:20,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:20,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:20,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:20,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-26 19:55:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:20,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:20,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:20,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:20,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:20,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:20,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:20,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:20,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:20,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:20,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:20,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-26 19:55:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:20,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:20,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:20,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:20,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:20,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:20,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:20,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:20,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:20,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:20,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:20,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-26 19:55:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:20,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:20,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:20,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:20,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:20,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:20,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:20,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:20,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:20,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:20,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:20,633 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 18 proven. 400 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-26 19:55:20,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455440365] [2020-10-26 19:55:20,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:55:20,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-26 19:55:20,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405930596] [2020-10-26 19:55:20,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-26 19:55:20,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:55:20,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-26 19:55:20,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2020-10-26 19:55:20,636 INFO L87 Difference]: Start difference. First operand 128 states and 143 transitions. Second operand 26 states. [2020-10-26 19:55:26,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:55:26,919 INFO L93 Difference]: Finished difference Result 212 states and 246 transitions. [2020-10-26 19:55:26,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-26 19:55:26,922 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 143 [2020-10-26 19:55:26,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:55:26,925 INFO L225 Difference]: With dead ends: 212 [2020-10-26 19:55:26,925 INFO L226 Difference]: Without dead ends: 209 [2020-10-26 19:55:26,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=481, Invalid=3809, Unknown=0, NotChecked=0, Total=4290 [2020-10-26 19:55:26,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-26 19:55:26,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 190. [2020-10-26 19:55:26,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-26 19:55:26,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 220 transitions. [2020-10-26 19:55:26,963 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 220 transitions. Word has length 143 [2020-10-26 19:55:26,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:55:26,964 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 220 transitions. [2020-10-26 19:55:26,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-26 19:55:26,964 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 220 transitions. [2020-10-26 19:55:26,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-26 19:55:26,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:55:26,966 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 10, 9, 9, 9, 9, 9, 8, 6, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:55:26,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 19:55:26,966 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:55:26,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:55:26,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1697536536, now seen corresponding path program 16 times [2020-10-26 19:55:26,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:55:26,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614575425] [2020-10-26 19:55:26,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:55:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:27,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:27,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:27,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:27,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:27,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:27,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:27,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:27,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:27,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:27,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:27,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:27,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:27,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:27,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:28,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:28,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:28,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:28,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:28,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:28,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:28,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:28,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:28,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:32,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:32,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-26 19:55:32,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-26 19:55:32,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-26 19:55:32,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:32,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-26 19:55:32,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:55:32,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-26 19:55:32,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:33,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:55:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:33,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:33,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:33,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:55:33,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:33,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:33,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:33,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:55:33,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:33,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:55:33,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:33,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:55:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:33,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:33,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:33,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:33,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:33,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:33,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:33,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:33,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:33,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:33,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:33,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:55:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:33,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:33,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:33,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:33,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:33,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:33,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:33,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:33,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:33,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:33,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:33,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-26 19:55:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:33,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:33,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:33,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:33,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:33,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:33,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:33,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:33,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:33,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:33,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:33,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-26 19:55:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:33,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:33,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:33,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:33,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:33,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:33,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:33,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:33,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:33,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:33,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:33,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-26 19:55:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:33,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:33,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:33,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:33,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:33,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:33,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:33,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:33,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-26 19:55:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:33,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:33,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:33,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:33,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:33,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:33,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:33,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:33,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:33,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:33,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:33,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-26 19:55:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:33,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:33,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:33,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:33,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:33,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:33,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:33,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:33,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:33,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:33,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:33,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-26 19:55:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:33,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:33,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:33,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:33,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:33,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:33,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:33,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:33,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:33,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:33,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:33,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-26 19:55:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:33,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:33,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:33,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:33,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:33,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:33,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:33,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:33,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:33,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:33,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:33,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-26 19:55:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:33,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:33,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:33,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:33,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:33,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:33,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:33,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:33,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:33,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:33,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:33,339 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 27 proven. 430 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-26 19:55:33,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614575425] [2020-10-26 19:55:33,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:55:33,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-26 19:55:33,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452568117] [2020-10-26 19:55:33,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-26 19:55:33,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:55:33,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-26 19:55:33,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-10-26 19:55:33,341 INFO L87 Difference]: Start difference. First operand 190 states and 220 transitions. Second operand 24 states. [2020-10-26 19:55:40,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:55:40,782 INFO L93 Difference]: Finished difference Result 234 states and 271 transitions. [2020-10-26 19:55:40,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-26 19:55:40,784 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 152 [2020-10-26 19:55:40,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:55:40,786 INFO L225 Difference]: With dead ends: 234 [2020-10-26 19:55:40,786 INFO L226 Difference]: Without dead ends: 217 [2020-10-26 19:55:40,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=371, Invalid=4051, Unknown=0, NotChecked=0, Total=4422 [2020-10-26 19:55:40,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-26 19:55:40,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 201. [2020-10-26 19:55:40,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-26 19:55:40,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 235 transitions. [2020-10-26 19:55:40,829 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 235 transitions. Word has length 152 [2020-10-26 19:55:40,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:55:40,829 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 235 transitions. [2020-10-26 19:55:40,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-26 19:55:40,830 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 235 transitions. [2020-10-26 19:55:40,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-26 19:55:40,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:55:40,831 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 10, 9, 9, 9, 8, 8, 8, 8, 8, 6, 5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:55:40,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 19:55:40,832 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:55:40,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:55:40,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1958398695, now seen corresponding path program 17 times [2020-10-26 19:55:40,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:55:40,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702468294] [2020-10-26 19:55:40,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:55:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:40,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:41,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:41,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:41,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:41,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:41,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:41,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:41,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:42,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:42,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:42,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:42,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:42,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:42,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:43,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:43,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:43,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:43,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:43,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:43,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:45,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:45,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-26 19:55:45,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-26 19:55:45,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-26 19:55:45,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:45,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-26 19:55:45,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:55:45,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-26 19:55:45,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:46,298 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2020-10-26 19:55:46,448 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-10-26 19:55:47,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:55:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:47,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:47,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:47,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:55:47,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:47,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:47,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:47,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:55:47,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:47,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:55:47,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:47,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:55:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:47,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:47,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:47,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:47,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:47,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:47,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:47,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:47,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:47,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:47,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:47,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:55:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:47,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:47,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:47,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:47,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:47,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:47,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:47,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:47,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:47,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:47,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:47,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-26 19:55:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:47,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:47,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:47,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:47,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:47,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:47,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:47,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:47,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:47,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:47,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:47,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-26 19:55:47,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:47,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:47,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:47,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:47,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:47,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:47,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:47,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:47,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:47,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:47,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:47,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-26 19:55:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:47,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:47,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:47,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:47,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:47,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:47,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:47,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:47,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:47,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:47,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:47,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-26 19:55:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:47,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:47,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:47,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:47,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:47,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:47,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:47,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:47,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:47,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:47,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:47,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-26 19:55:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:47,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:47,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:47,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:47,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:47,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:47,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:47,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:47,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:47,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:47,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:47,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-26 19:55:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:47,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:47,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:47,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:47,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:47,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:47,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:47,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:47,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:47,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:47,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:47,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-26 19:55:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:47,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:47,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:47,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:47,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:47,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:47,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:47,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:47,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:47,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:47,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:48,067 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 30 proven. 543 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-26 19:55:48,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702468294] [2020-10-26 19:55:48,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:55:48,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-26 19:55:48,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134726121] [2020-10-26 19:55:48,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-26 19:55:48,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:55:48,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-26 19:55:48,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=838, Unknown=0, NotChecked=0, Total=930 [2020-10-26 19:55:48,069 INFO L87 Difference]: Start difference. First operand 201 states and 235 transitions. Second operand 31 states. [2020-10-26 19:55:50,010 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 26 [2020-10-26 19:55:53,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:55:53,354 INFO L93 Difference]: Finished difference Result 216 states and 249 transitions. [2020-10-26 19:55:53,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-26 19:55:53,356 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 155 [2020-10-26 19:55:53,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:55:53,358 INFO L225 Difference]: With dead ends: 216 [2020-10-26 19:55:53,358 INFO L226 Difference]: Without dead ends: 213 [2020-10-26 19:55:53,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=501, Invalid=2921, Unknown=0, NotChecked=0, Total=3422 [2020-10-26 19:55:53,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-26 19:55:53,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 143. [2020-10-26 19:55:53,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-26 19:55:53,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 161 transitions. [2020-10-26 19:55:53,393 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 161 transitions. Word has length 155 [2020-10-26 19:55:53,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:55:53,394 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 161 transitions. [2020-10-26 19:55:53,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-26 19:55:53,394 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 161 transitions. [2020-10-26 19:55:53,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-26 19:55:53,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:55:53,396 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 8, 7, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:55:53,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 19:55:53,396 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:55:53,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:55:53,397 INFO L82 PathProgramCache]: Analyzing trace with hash -453424708, now seen corresponding path program 18 times [2020-10-26 19:55:53,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:55:53,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725599993] [2020-10-26 19:55:53,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:55:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:53,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:53,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:54,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:54,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:54,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:54,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:54,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:54,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:54,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:54,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:54,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:56,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:57,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:57,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:57,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:58,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:58,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:58,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:58,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-26 19:55:58,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-26 19:55:58,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-26 19:55:58,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:58,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-26 19:55:58,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:55:58,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 19:55:58,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:59,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:55:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:59,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:59,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:59,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:55:59,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:59,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:55:59,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:59,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:55:59,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:59,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:55:59,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:59,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:55:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:59,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:59,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:59,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:59,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:59,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:55:59,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:59,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:59,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:59,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:59,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:59,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:55:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:59,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:59,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:59,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:59,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:59,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:59,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:59,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:59,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:59,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:59,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:59,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-26 19:55:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:59,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:59,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:59,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:59,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:59,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:59,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:59,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:59,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-26 19:55:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:59,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:59,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:59,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:59,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:59,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:59,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:59,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:59,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:59,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:59,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:59,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-26 19:55:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:59,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:59,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:59,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:59,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:59,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:59,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:59,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:59,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:59,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:59,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:59,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-26 19:55:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:59,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:59,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:59,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:59,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:59,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:55:59,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:59,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:59,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:59,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:59,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:59,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-26 19:55:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:59,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:59,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:59,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:59,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:59,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:59,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:59,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:59,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:59,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:59,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:59,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-26 19:55:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:59,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:59,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:59,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:59,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:59,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:59,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:59,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:59,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:59,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:59,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:59,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-26 19:55:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:59,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:59,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:59,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:59,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:59,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:59,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:59,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:59,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:59,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:59,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:59,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-26 19:55:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:59,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:59,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:59,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:59,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:59,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:59,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:59,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:59,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:59,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:59,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:59,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-26 19:55:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:55:59,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:55:59,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:55:59,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:55:59,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:55:59,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:55:59,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:55:59,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:55:59,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:55:59,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:55:59,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:55:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 30 proven. 475 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2020-10-26 19:55:59,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725599993] [2020-10-26 19:55:59,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:55:59,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-26 19:55:59,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217806732] [2020-10-26 19:55:59,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-26 19:55:59,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:55:59,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-26 19:55:59,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-26 19:55:59,611 INFO L87 Difference]: Start difference. First operand 143 states and 161 transitions. Second operand 23 states. [2020-10-26 19:56:05,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:05,875 INFO L93 Difference]: Finished difference Result 194 states and 218 transitions. [2020-10-26 19:56:05,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-26 19:56:05,876 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 161 [2020-10-26 19:56:05,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:05,878 INFO L225 Difference]: With dead ends: 194 [2020-10-26 19:56:05,878 INFO L226 Difference]: Without dead ends: 177 [2020-10-26 19:56:05,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=300, Invalid=3122, Unknown=0, NotChecked=0, Total=3422 [2020-10-26 19:56:05,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-26 19:56:05,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 148. [2020-10-26 19:56:05,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-26 19:56:05,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 167 transitions. [2020-10-26 19:56:05,913 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 167 transitions. Word has length 161 [2020-10-26 19:56:05,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:05,914 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 167 transitions. [2020-10-26 19:56:05,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-26 19:56:05,914 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 167 transitions. [2020-10-26 19:56:05,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-26 19:56:05,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:05,916 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 8, 8, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:05,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-26 19:56:05,916 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:05,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:05,916 INFO L82 PathProgramCache]: Analyzing trace with hash 646624360, now seen corresponding path program 19 times [2020-10-26 19:56:05,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:05,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703828654] [2020-10-26 19:56:05,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:05,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:06,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:06,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:06,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:06,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:06,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:06,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:06,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:06,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:06,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:10,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:10,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-26 19:56:10,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-26 19:56:10,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-26 19:56:10,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:10,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-26 19:56:10,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:10,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-26 19:56:10,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:11,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:11,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:11,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:11,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:11,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:11,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:11,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:11,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:11,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:11,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:11,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:11,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:11,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:11,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:11,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:11,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:11,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:11,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:11,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:11,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:11,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:11,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:11,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:56:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:11,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:11,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:11,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:11,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:11,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:11,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:11,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:11,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:11,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:11,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:11,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-26 19:56:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:11,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:11,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:11,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:11,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:11,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:11,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:11,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:11,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:11,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:11,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:11,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-26 19:56:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:11,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:11,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:11,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:11,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:11,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:11,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:11,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:11,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:11,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:11,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:11,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-26 19:56:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:11,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:11,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:11,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:11,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:11,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:11,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:11,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:11,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:11,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:11,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:11,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-26 19:56:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:12,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:12,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:12,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:12,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:12,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:12,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:12,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:12,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:12,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:12,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:12,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-26 19:56:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:12,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:12,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:12,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:12,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:12,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:12,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:12,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:12,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-26 19:56:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:12,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:12,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:12,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:12,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:12,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:12,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:12,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:12,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:12,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:12,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:12,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-26 19:56:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:12,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:12,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:12,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:12,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:12,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:12,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:12,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:12,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:12,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:12,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:12,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-26 19:56:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:12,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:12,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:12,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:12,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:12,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:12,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:12,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:12,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:12,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:12,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:12,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-26 19:56:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:12,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:12,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:12,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:12,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:12,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:12,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:12,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:12,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-26 19:56:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:12,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:12,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:12,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:12,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:12,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:12,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:12,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:12,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:12,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:12,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:12,128 INFO L134 CoverageAnalysis]: Checked inductivity of 818 backedges. 22 proven. 535 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-10-26 19:56:12,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703828654] [2020-10-26 19:56:12,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:12,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-26 19:56:12,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607239158] [2020-10-26 19:56:12,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-26 19:56:12,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:12,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-26 19:56:12,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=548, Unknown=0, NotChecked=0, Total=600 [2020-10-26 19:56:12,131 INFO L87 Difference]: Start difference. First operand 148 states and 167 transitions. Second operand 25 states. [2020-10-26 19:56:17,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:17,816 INFO L93 Difference]: Finished difference Result 249 states and 292 transitions. [2020-10-26 19:56:17,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-26 19:56:17,817 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 170 [2020-10-26 19:56:17,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:17,824 INFO L225 Difference]: With dead ends: 249 [2020-10-26 19:56:17,825 INFO L226 Difference]: Without dead ends: 246 [2020-10-26 19:56:17,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=304, Invalid=3002, Unknown=0, NotChecked=0, Total=3306 [2020-10-26 19:56:17,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-26 19:56:17,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 226. [2020-10-26 19:56:17,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-26 19:56:17,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 265 transitions. [2020-10-26 19:56:17,893 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 265 transitions. Word has length 170 [2020-10-26 19:56:17,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:17,894 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 265 transitions. [2020-10-26 19:56:17,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-26 19:56:17,894 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 265 transitions. [2020-10-26 19:56:17,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-26 19:56:17,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:17,896 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 8, 8, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:17,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-26 19:56:17,897 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:17,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:17,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1442799550, now seen corresponding path program 20 times [2020-10-26 19:56:17,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:17,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704525212] [2020-10-26 19:56:17,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:17,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:18,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:20,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:20,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-26 19:56:20,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:56:20,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2836 [2020-10-26 19:56:20,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:20,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-26 19:56:20,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:56:20,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-26 19:56:20,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:21,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:21,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:21,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:21,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:56:21,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:21,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:56:21,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 19:56:21,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:56:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:21,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-26 19:56:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:21,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-26 19:56:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:21,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-26 19:56:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:21,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-26 19:56:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:21,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-26 19:56:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:21,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-26 19:56:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:21,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-26 19:56:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:21,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-26 19:56:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:21,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-26 19:56:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:21,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-26 19:56:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:21,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-26 19:56:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:21,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:22,011 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 390 proven. 220 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-26 19:56:22,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704525212] [2020-10-26 19:56:22,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:22,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-26 19:56:22,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144154802] [2020-10-26 19:56:22,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-26 19:56:22,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:22,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-26 19:56:22,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2020-10-26 19:56:22,013 INFO L87 Difference]: Start difference. First operand 226 states and 265 transitions. Second operand 25 states. [2020-10-26 19:56:25,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:25,665 INFO L93 Difference]: Finished difference Result 274 states and 312 transitions. [2020-10-26 19:56:25,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-26 19:56:25,666 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 179 [2020-10-26 19:56:25,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:25,669 INFO L225 Difference]: With dead ends: 274 [2020-10-26 19:56:25,669 INFO L226 Difference]: Without dead ends: 171 [2020-10-26 19:56:25,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=433, Invalid=1919, Unknown=0, NotChecked=0, Total=2352 [2020-10-26 19:56:25,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-26 19:56:25,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 160. [2020-10-26 19:56:25,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-26 19:56:25,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 180 transitions. [2020-10-26 19:56:25,710 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 180 transitions. Word has length 179 [2020-10-26 19:56:25,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:25,710 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 180 transitions. [2020-10-26 19:56:25,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-26 19:56:25,710 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 180 transitions. [2020-10-26 19:56:25,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-26 19:56:25,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:25,712 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 12, 11, 11, 11, 11, 11, 10, 8, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:25,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-26 19:56:25,712 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:25,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:25,712 INFO L82 PathProgramCache]: Analyzing trace with hash 531543775, now seen corresponding path program 21 times [2020-10-26 19:56:25,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:25,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046608015] [2020-10-26 19:56:25,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:25,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:25,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:27,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:27,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:28,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:29,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:29,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:29,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:30,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:30,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:30,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:30,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:30,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-26 19:56:30,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-26 19:56:30,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-26 19:56:30,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:30,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-26 19:56:30,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:30,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-26 19:56:30,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:32,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:32,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:32,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:32,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:32,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:32,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:32,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:32,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:32,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:32,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:32,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:32,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:32,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:32,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:32,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:32,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:32,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:32,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:32,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:32,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:32,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:32,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:32,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:56:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:32,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:32,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:32,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:32,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:32,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:32,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:32,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:32,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:32,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:32,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:32,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-26 19:56:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:32,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:32,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:32,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:32,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:32,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:32,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:32,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:32,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:32,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:32,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:32,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-26 19:56:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:32,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:32,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:32,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:32,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:32,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:32,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:32,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:32,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:32,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:32,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:32,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-26 19:56:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:32,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:32,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:32,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:32,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:32,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:32,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:32,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:32,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:32,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:32,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:32,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-26 19:56:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:32,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:32,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:32,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:32,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:32,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:32,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:32,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:32,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:32,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:32,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:32,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-26 19:56:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:32,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:32,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:32,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:32,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:32,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:32,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:32,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:32,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:32,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:32,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:32,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-26 19:56:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:32,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:32,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:32,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:32,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:32,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:32,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:32,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:32,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:32,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:32,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-26 19:56:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:32,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:32,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:32,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:32,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:32,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:32,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:32,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:32,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-26 19:56:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:32,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:32,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:32,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:32,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:32,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:32,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-26 19:56:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:32,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:32,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:32,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:32,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:32,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:32,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:32,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:32,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:32,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:32,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:32,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-26 19:56:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:32,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:32,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:32,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:32,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:32,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:32,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:32,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:32,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:32,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:32,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:32,510 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 24 proven. 689 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2020-10-26 19:56:32,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046608015] [2020-10-26 19:56:32,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:32,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-26 19:56:32,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808360733] [2020-10-26 19:56:32,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-26 19:56:32,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:32,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-26 19:56:32,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=799, Unknown=0, NotChecked=0, Total=870 [2020-10-26 19:56:32,513 INFO L87 Difference]: Start difference. First operand 160 states and 180 transitions. Second operand 30 states. [2020-10-26 19:56:41,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:41,886 INFO L93 Difference]: Finished difference Result 184 states and 207 transitions. [2020-10-26 19:56:41,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-26 19:56:41,888 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 182 [2020-10-26 19:56:41,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:41,890 INFO L225 Difference]: With dead ends: 184 [2020-10-26 19:56:41,890 INFO L226 Difference]: Without dead ends: 181 [2020-10-26 19:56:41,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1235 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=642, Invalid=5210, Unknown=0, NotChecked=0, Total=5852 [2020-10-26 19:56:41,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-26 19:56:41,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 170. [2020-10-26 19:56:41,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-26 19:56:41,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 192 transitions. [2020-10-26 19:56:41,935 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 192 transitions. Word has length 182 [2020-10-26 19:56:41,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:41,936 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 192 transitions. [2020-10-26 19:56:41,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-26 19:56:41,936 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 192 transitions. [2020-10-26 19:56:41,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-26 19:56:41,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:41,937 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 13, 13, 13, 12, 12, 12, 12, 12, 10, 8, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:41,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-26 19:56:41,938 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:41,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:41,938 INFO L82 PathProgramCache]: Analyzing trace with hash -2040450265, now seen corresponding path program 22 times [2020-10-26 19:56:41,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:41,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020754765] [2020-10-26 19:56:41,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:42,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:42,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:42,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:42,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:42,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:42,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:43,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:43,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:43,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:43,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:43,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:43,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:43,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:43,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:44,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:44,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:44,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:44,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:44,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:46,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:46,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:46,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:46,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:46,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:46,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:46,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:47,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:47,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-26 19:56:47,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-26 19:56:47,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-26 19:56:47,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:47,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-26 19:56:47,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:47,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-26 19:56:47,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:48,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:48,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:48,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:48,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:48,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:56:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:48,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-26 19:56:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:48,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-26 19:56:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:48,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-26 19:56:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:48,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-26 19:56:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:48,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-26 19:56:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:48,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-26 19:56:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:48,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-26 19:56:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:48,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-26 19:56:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:48,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-26 19:56:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:48,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-26 19:56:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:48,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-26 19:56:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:48,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 36 proven. 731 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-26 19:56:48,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020754765] [2020-10-26 19:56:48,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:48,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-26 19:56:48,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174815474] [2020-10-26 19:56:48,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-26 19:56:48,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:48,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-26 19:56:48,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2020-10-26 19:56:48,840 INFO L87 Difference]: Start difference. First operand 170 states and 192 transitions. Second operand 28 states.