/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:26:51,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:26:51,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:26:51,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:26:51,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:26:51,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:26:51,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:26:51,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:26:51,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:26:51,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:26:51,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:26:51,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:26:51,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:26:51,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:26:51,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:26:51,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:26:51,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:26:51,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:26:51,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:26:51,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:26:51,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:26:51,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:26:51,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:26:51,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:26:51,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:26:51,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:26:51,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:26:51,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:26:51,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:26:51,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:26:51,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:26:51,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:26:51,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:26:51,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:26:51,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:26:51,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:26:51,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:26:51,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:26:51,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:26:51,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:26:51,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:26:51,924 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 23:26:51,952 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:26:51,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:26:51,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:26:51,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:26:51,955 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:26:51,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:26:51,955 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:26:51,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:26:51,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:26:51,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:26:51,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:26:51,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:26:51,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:26:51,957 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:26:51,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:26:51,957 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:26:51,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:26:51,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:26:51,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:26:51,958 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:26:51,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:26:51,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:26:51,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:26:51,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:26:51,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:26:51,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:26:51,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:26:51,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:26:51,960 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:26:51,960 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:26:52,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:26:52,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:26:52,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:26:52,490 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:26:52,492 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:26:52,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label32.c [2020-10-26 23:26:52,598 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/840a01e2f/4a70c33371594cbd83f084fc24eff782/FLAGd2f596566 [2020-10-26 23:26:53,426 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:26:53,426 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label32.c [2020-10-26 23:26:53,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/840a01e2f/4a70c33371594cbd83f084fc24eff782/FLAGd2f596566 [2020-10-26 23:26:53,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/840a01e2f/4a70c33371594cbd83f084fc24eff782 [2020-10-26 23:26:53,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:26:53,605 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:26:53,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:26:53,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:26:53,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:26:53,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:26:53" (1/1) ... [2020-10-26 23:26:53,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44d2e5fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:53, skipping insertion in model container [2020-10-26 23:26:53,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:26:53" (1/1) ... [2020-10-26 23:26:53,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:26:53,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:26:54,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:26:54,177 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:26:54,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:26:54,439 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:26:54,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:54 WrapperNode [2020-10-26 23:26:54,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:26:54,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:26:54,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:26:54,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:26:54,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:54" (1/1) ... [2020-10-26 23:26:54,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:54" (1/1) ... [2020-10-26 23:26:54,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:54" (1/1) ... [2020-10-26 23:26:54,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:54" (1/1) ... [2020-10-26 23:26:54,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:54" (1/1) ... [2020-10-26 23:26:54,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:54" (1/1) ... [2020-10-26 23:26:54,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:54" (1/1) ... [2020-10-26 23:26:54,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:26:54,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:26:54,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:26:54,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:26:54,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:54" (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 23:26:54,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:26:54,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:26:54,692 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:26:54,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:26:54,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:26:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:26:54,694 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:26:54,694 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:26:54,694 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:26:54,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:26:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:26:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:26:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:26:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:26:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:26:54,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:26:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:26:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:26:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:26:56,443 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:26:56,444 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:26:56,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:26:56 BoogieIcfgContainer [2020-10-26 23:26:56,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:26:56,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:26:56,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:26:56,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:26:56,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:26:53" (1/3) ... [2020-10-26 23:26:56,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182dcc77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:26:56, skipping insertion in model container [2020-10-26 23:26:56,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:54" (2/3) ... [2020-10-26 23:26:56,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182dcc77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:26:56, skipping insertion in model container [2020-10-26 23:26:56,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:26:56" (3/3) ... [2020-10-26 23:26:56,456 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label32.c [2020-10-26 23:26:56,468 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:26:56,474 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:26:56,486 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:26:56,519 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:26:56,519 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:26:56,519 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:26:56,519 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:26:56,520 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:26:56,520 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:26:56,520 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:26:56,520 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:26:56,548 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:26:56,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-26 23:26:56,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:56,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:26:56,562 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:56,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:56,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1984795856, now seen corresponding path program 1 times [2020-10-26 23:26:56,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:56,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877414478] [2020-10-26 23:26:56,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:56,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:57,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:57,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-26 23:26:57,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:57,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 804 [2020-10-26 23:26:57,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:57,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:26:57,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:26:57,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-26 23:26:57,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:26:57,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:57,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:57,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:57,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:57,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:57,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:26:57,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:57,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:57,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:57,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:26:57,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:26:57,918 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 23:26:57,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877414478] [2020-10-26 23:26:57,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:26:57,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:26:57,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953806914] [2020-10-26 23:26:57,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:26:57,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:57,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:26:57,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:26:57,945 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-26 23:27:00,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:00,455 INFO L93 Difference]: Finished difference Result 703 states and 1246 transitions. [2020-10-26 23:27:00,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:27:00,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-26 23:27:00,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:00,477 INFO L225 Difference]: With dead ends: 703 [2020-10-26 23:27:00,477 INFO L226 Difference]: Without dead ends: 381 [2020-10-26 23:27:00,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:27:00,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-26 23:27:00,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 377. [2020-10-26 23:27:00,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-26 23:27:00,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 553 transitions. [2020-10-26 23:27:00,592 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 553 transitions. Word has length 62 [2020-10-26 23:27:00,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:00,593 INFO L481 AbstractCegarLoop]: Abstraction has 377 states and 553 transitions. [2020-10-26 23:27:00,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:27:00,594 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 553 transitions. [2020-10-26 23:27:00,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-26 23:27:00,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:00,602 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 23:27:00,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:27:00,602 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:00,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:00,603 INFO L82 PathProgramCache]: Analyzing trace with hash 622706108, now seen corresponding path program 1 times [2020-10-26 23:27:00,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:00,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410606851] [2020-10-26 23:27:00,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:00,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:00,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:01,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:02,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:02,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-26 23:27:02,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:27:02,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1809 [2020-10-26 23:27:02,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:02,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:27:02,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:27:02,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:27:02,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:27:02,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:02,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:02,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:02,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:02,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:02,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:27:02,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:02,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:02,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:02,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:27:02,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:27:02,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:02,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:02,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:02,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:27:02,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:02,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-26 23:27:02,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:02,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:02,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:02,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:27:02,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:02,940 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:27:02,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410606851] [2020-10-26 23:27:02,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:27:02,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:27:02,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244949867] [2020-10-26 23:27:02,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:27:02,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:02,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:27:02,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:27:02,947 INFO L87 Difference]: Start difference. First operand 377 states and 553 transitions. Second operand 7 states. [2020-10-26 23:27:05,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:05,812 INFO L93 Difference]: Finished difference Result 1144 states and 1712 transitions. [2020-10-26 23:27:05,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:27:05,812 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2020-10-26 23:27:05,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:05,823 INFO L225 Difference]: With dead ends: 1144 [2020-10-26 23:27:05,823 INFO L226 Difference]: Without dead ends: 773 [2020-10-26 23:27:05,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:27:05,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-10-26 23:27:05,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 753. [2020-10-26 23:27:05,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-10-26 23:27:05,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 994 transitions. [2020-10-26 23:27:05,890 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 994 transitions. Word has length 131 [2020-10-26 23:27:05,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:05,891 INFO L481 AbstractCegarLoop]: Abstraction has 753 states and 994 transitions. [2020-10-26 23:27:05,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:27:05,891 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 994 transitions. [2020-10-26 23:27:05,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-26 23:27:05,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:05,899 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:27:05,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:27:05,899 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:05,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:05,900 INFO L82 PathProgramCache]: Analyzing trace with hash -521290340, now seen corresponding path program 1 times [2020-10-26 23:27:05,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:05,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196331524] [2020-10-26 23:27:05,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:06,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:06,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:06,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:06,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:11,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:11,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-26 23:27:11,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:27:11,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-26 23:27:11,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:11,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:27:11,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:27:11,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:27:11,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:11,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:11,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:11,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:11,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:11,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:11,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:27:11,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:11,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:11,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:11,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:27:11,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:11,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:11,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:11,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:11,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:27:11,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:11,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 23:27:11,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:11,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:11,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:11,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:27:11,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:11,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 23:27:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:11,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:11,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:11,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:27:11,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:11,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:27:11,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:11,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:11,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:27:11,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:11,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:11,594 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 108 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:27:11,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196331524] [2020-10-26 23:27:11,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:11,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:27:11,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122123129] [2020-10-26 23:27:11,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:27:11,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:11,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:27:11,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:27:11,599 INFO L87 Difference]: Start difference. First operand 753 states and 994 transitions. Second operand 7 states. [2020-10-26 23:27:13,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:13,908 INFO L93 Difference]: Finished difference Result 1710 states and 2226 transitions. [2020-10-26 23:27:13,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:27:13,909 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 218 [2020-10-26 23:27:13,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:13,916 INFO L225 Difference]: With dead ends: 1710 [2020-10-26 23:27:13,916 INFO L226 Difference]: Without dead ends: 963 [2020-10-26 23:27:13,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:27:13,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-10-26 23:27:13,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 937. [2020-10-26 23:27:13,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 937 states. [2020-10-26 23:27:13,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1194 transitions. [2020-10-26 23:27:13,965 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1194 transitions. Word has length 218 [2020-10-26 23:27:13,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:13,966 INFO L481 AbstractCegarLoop]: Abstraction has 937 states and 1194 transitions. [2020-10-26 23:27:13,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:27:13,966 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1194 transitions. [2020-10-26 23:27:13,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-26 23:27:13,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:13,974 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:27:13,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:27:13,974 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:13,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:13,975 INFO L82 PathProgramCache]: Analyzing trace with hash 599799028, now seen corresponding path program 1 times [2020-10-26 23:27:13,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:13,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770687322] [2020-10-26 23:27:13,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:14,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:14,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:14,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:15,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:16,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:18,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:18,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-26 23:27:18,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:27:18,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4087 [2020-10-26 23:27:18,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:18,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:27:18,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:27:18,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-26 23:27:18,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:18,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:18,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:18,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:18,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:18,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:18,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:27:18,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:18,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:18,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:18,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:27:18,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:18,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:18,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:18,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:18,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:27:18,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:18,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-26 23:27:18,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:18,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:18,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:18,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:27:18,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:18,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:27:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:18,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:18,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:18,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:27:18,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:18,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-26 23:27:18,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:18,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:18,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:18,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:27:18,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:19,602 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 109 proven. 78 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:27:19,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770687322] [2020-10-26 23:27:19,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:19,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:27:19,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505723726] [2020-10-26 23:27:19,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:27:19,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:19,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:27:19,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:27:19,606 INFO L87 Difference]: Start difference. First operand 937 states and 1194 transitions. Second operand 8 states. [2020-10-26 23:27:22,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:22,923 INFO L93 Difference]: Finished difference Result 2138 states and 2869 transitions. [2020-10-26 23:27:22,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:27:22,924 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 229 [2020-10-26 23:27:22,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:22,935 INFO L225 Difference]: With dead ends: 2138 [2020-10-26 23:27:22,935 INFO L226 Difference]: Without dead ends: 1389 [2020-10-26 23:27:22,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:27:22,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2020-10-26 23:27:23,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1311. [2020-10-26 23:27:23,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-10-26 23:27:23,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1628 transitions. [2020-10-26 23:27:23,010 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1628 transitions. Word has length 229 [2020-10-26 23:27:23,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:23,011 INFO L481 AbstractCegarLoop]: Abstraction has 1311 states and 1628 transitions. [2020-10-26 23:27:23,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:27:23,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1628 transitions. [2020-10-26 23:27:23,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-26 23:27:23,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:23,016 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:27:23,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:27:23,017 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:23,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:23,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1818147592, now seen corresponding path program 1 times [2020-10-26 23:27:23,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:23,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80679013] [2020-10-26 23:27:23,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:23,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:23,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:23,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:27,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:28,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:28,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-26 23:27:28,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:27:28,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-26 23:27:28,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:28,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:27:28,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:27:28,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:27:28,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:28,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:28,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:28,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:28,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:28,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:28,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:27:28,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:28,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:28,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:28,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:27:28,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:28,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:28,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:28,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:28,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:28,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:28,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-26 23:27:28,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:28,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:28,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:28,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:27:28,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:27:28,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 23:27:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:28,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:28,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:28,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:27:28,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:28,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:27:28,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:28,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:28,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:27:28,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:28,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:28,748 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 108 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:27:28,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80679013] [2020-10-26 23:27:28,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:28,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:27:28,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991907100] [2020-10-26 23:27:28,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:27:28,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:28,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:27:28,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:27:28,753 INFO L87 Difference]: Start difference. First operand 1311 states and 1628 transitions. Second operand 7 states. [2020-10-26 23:27:31,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:31,375 INFO L93 Difference]: Finished difference Result 3018 states and 3865 transitions. [2020-10-26 23:27:31,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:27:31,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-10-26 23:27:31,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:31,389 INFO L225 Difference]: With dead ends: 3018 [2020-10-26 23:27:31,389 INFO L226 Difference]: Without dead ends: 1895 [2020-10-26 23:27:31,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:27:31,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2020-10-26 23:27:31,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1875. [2020-10-26 23:27:31,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1875 states. [2020-10-26 23:27:31,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 2287 transitions. [2020-10-26 23:27:31,458 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 2287 transitions. Word has length 244 [2020-10-26 23:27:31,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:31,459 INFO L481 AbstractCegarLoop]: Abstraction has 1875 states and 2287 transitions. [2020-10-26 23:27:31,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:27:31,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 2287 transitions. [2020-10-26 23:27:31,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-26 23:27:31,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:31,466 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:27:31,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:27:31,467 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:31,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:31,467 INFO L82 PathProgramCache]: Analyzing trace with hash 482036504, now seen corresponding path program 1 times [2020-10-26 23:27:31,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:31,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105417415] [2020-10-26 23:27:31,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:31,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:31,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:31,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:32,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:32,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:32,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-26 23:27:32,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:27:32,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1234 [2020-10-26 23:27:32,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:32,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:32,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:27:32,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 23:27:32,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:32,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:32,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:32,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:32,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:32,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:32,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:27:32,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:32,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:32,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:32,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:32,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:32,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:32,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:33,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:33,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:27:33,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:33,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 23:27:33,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:33,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:33,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:33,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:27:33,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:33,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:27:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:33,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:33,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:33,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:33,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 23:27:33,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:27:33,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-26 23:27:33,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:33,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:33,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:33,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-26 23:27:33,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:33,593 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:27:33,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105417415] [2020-10-26 23:27:33,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:33,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:27:33,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128958424] [2020-10-26 23:27:33,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:27:33,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:33,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:27:33,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:27:33,598 INFO L87 Difference]: Start difference. First operand 1875 states and 2287 transitions. Second operand 7 states. [2020-10-26 23:27:35,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:35,825 INFO L93 Difference]: Finished difference Result 3145 states and 3945 transitions. [2020-10-26 23:27:35,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:27:35,826 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 286 [2020-10-26 23:27:35,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:35,834 INFO L225 Difference]: With dead ends: 3145 [2020-10-26 23:27:35,834 INFO L226 Difference]: Without dead ends: 1523 [2020-10-26 23:27:35,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:27:35,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2020-10-26 23:27:35,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1495. [2020-10-26 23:27:35,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1495 states. [2020-10-26 23:27:35,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 1637 transitions. [2020-10-26 23:27:35,895 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 1637 transitions. Word has length 286 [2020-10-26 23:27:35,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:35,895 INFO L481 AbstractCegarLoop]: Abstraction has 1495 states and 1637 transitions. [2020-10-26 23:27:35,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:27:35,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 1637 transitions. [2020-10-26 23:27:35,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2020-10-26 23:27:35,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:35,907 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:27:35,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:27:35,908 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:35,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:35,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1556764920, now seen corresponding path program 1 times [2020-10-26 23:27:35,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:35,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909322288] [2020-10-26 23:27:35,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:36,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:36,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:36,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:37,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:41,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:41,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 482 [2020-10-26 23:27:41,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:27:41,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 23:27:41,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:41,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:41,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:27:41,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 23:27:41,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:41,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:41,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:41,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:41,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:41,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:41,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:27:41,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:41,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:41,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:41,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:41,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:41,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:41,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:41,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:41,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:41,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:41,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:27:41,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:41,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:41,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:41,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:41,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:41,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:41,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:41,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:41,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:41,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:41,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-26 23:27:41,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:27:41,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:41,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:41,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:41,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:41,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:41,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:41,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-26 23:27:41,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:41,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:41,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:41,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:27:41,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:41,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:27:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:41,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:41,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:41,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:27:41,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:41,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:27:41,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:41,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:41,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:27:41,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:41,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:41,778 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 442 proven. 72 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2020-10-26 23:27:41,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909322288] [2020-10-26 23:27:41,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:41,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:27:41,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893288829] [2020-10-26 23:27:41,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:27:41,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:41,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:27:41,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:27:41,781 INFO L87 Difference]: Start difference. First operand 1495 states and 1637 transitions. Second operand 7 states. [2020-10-26 23:27:44,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:44,336 INFO L93 Difference]: Finished difference Result 3196 states and 3623 transitions. [2020-10-26 23:27:44,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:27:44,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 464 [2020-10-26 23:27:44,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:44,347 INFO L225 Difference]: With dead ends: 3196 [2020-10-26 23:27:44,347 INFO L226 Difference]: Without dead ends: 2073 [2020-10-26 23:27:44,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:27:44,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2020-10-26 23:27:44,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2055. [2020-10-26 23:27:44,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2055 states. [2020-10-26 23:27:44,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 2314 transitions. [2020-10-26 23:27:44,413 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 2314 transitions. Word has length 464 [2020-10-26 23:27:44,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:44,414 INFO L481 AbstractCegarLoop]: Abstraction has 2055 states and 2314 transitions. [2020-10-26 23:27:44,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:27:44,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 2314 transitions. [2020-10-26 23:27:44,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2020-10-26 23:27:44,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:44,425 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:27:44,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:27:44,425 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:44,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:44,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1060396492, now seen corresponding path program 1 times [2020-10-26 23:27:44,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:44,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863230518] [2020-10-26 23:27:44,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:44,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:44,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:44,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:48,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:49,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:49,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 489 [2020-10-26 23:27:49,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:27:49,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-26 23:27:49,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:27:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:27:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-26 23:27:49,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:49,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:49,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:49,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:49,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:49,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:49,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:27:49,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:49,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:49,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:49,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:49,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:49,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:49,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:49,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:49,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:49,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:49,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:27:49,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:49,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:49,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:49,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:49,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:49,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:49,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:49,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:49,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:49,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:49,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 23:27:49,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:27:49,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:49,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:49,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:50,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:50,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:27:50,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:50,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-26 23:27:50,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:50,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:50,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:50,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:27:50,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:50,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:27:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:50,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:50,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:50,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:27:50,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:50,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 23:27:50,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:50,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:50,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:50,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:27:50,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:50,550 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 576 proven. 72 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 23:27:50,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863230518] [2020-10-26 23:27:50,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:50,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:27:50,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744838628] [2020-10-26 23:27:50,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:27:50,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:50,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:27:50,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:27:50,553 INFO L87 Difference]: Start difference. First operand 2055 states and 2314 transitions. Second operand 9 states. [2020-10-26 23:27:53,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:53,100 INFO L93 Difference]: Finished difference Result 4314 states and 4970 transitions. [2020-10-26 23:27:53,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:27:53,101 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 471 [2020-10-26 23:27:53,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:53,114 INFO L225 Difference]: With dead ends: 4314 [2020-10-26 23:27:53,114 INFO L226 Difference]: Without dead ends: 2631 [2020-10-26 23:27:53,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:27:53,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2631 states. [2020-10-26 23:27:53,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2631 to 2611. [2020-10-26 23:27:53,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2611 states. [2020-10-26 23:27:53,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 2891 transitions. [2020-10-26 23:27:53,193 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 2891 transitions. Word has length 471 [2020-10-26 23:27:53,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:53,194 INFO L481 AbstractCegarLoop]: Abstraction has 2611 states and 2891 transitions. [2020-10-26 23:27:53,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:27:53,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 2891 transitions. [2020-10-26 23:27:53,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2020-10-26 23:27:53,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:53,201 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:27:53,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:27:53,201 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:53,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:53,202 INFO L82 PathProgramCache]: Analyzing trace with hash 2128568004, now seen corresponding path program 1 times [2020-10-26 23:27:53,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:53,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990137001] [2020-10-26 23:27:53,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:53,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:53,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:55,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:56,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:56,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 650 [2020-10-26 23:27:56,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:27:56,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3687 [2020-10-26 23:27:56,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:56,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:56,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:27:56,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:27:56,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:57,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:57,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:57,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:57,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:57,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:57,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:27:57,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:57,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:57,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:57,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:57,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:57,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:57,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:57,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:57,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:57,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:57,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:27:57,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:57,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:57,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:57,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:57,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:57,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:57,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:57,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:57,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:57,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:57,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:27:57,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:57,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:57,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:57,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:57,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:57,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:57,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:57,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:57,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:27:57,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:57,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:27:57,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:57,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:57,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:57,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:57,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:57,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:27:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:57,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:57,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:57,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:27:57,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:57,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 23:27:57,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:57,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:57,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:57,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:27:57,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:57,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:27:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:57,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:57,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:57,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:27:57,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:57,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:27:57,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:57,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:57,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:57,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:27:57,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:57,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 565 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2020-10-26 23:27:57,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990137001] [2020-10-26 23:27:57,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:57,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:27:57,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289408995] [2020-10-26 23:27:57,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:27:57,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:57,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:27:57,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:27:57,859 INFO L87 Difference]: Start difference. First operand 2611 states and 2891 transitions. Second operand 7 states. [2020-10-26 23:28:01,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:01,215 INFO L93 Difference]: Finished difference Result 5425 states and 6121 transitions. [2020-10-26 23:28:01,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:28:01,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 630 [2020-10-26 23:28:01,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:01,240 INFO L225 Difference]: With dead ends: 5425 [2020-10-26 23:28:01,241 INFO L226 Difference]: Without dead ends: 3186 [2020-10-26 23:28:01,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:28:01,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3186 states. [2020-10-26 23:28:01,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3186 to 3167. [2020-10-26 23:28:01,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3167 states. [2020-10-26 23:28:01,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3167 states to 3167 states and 3499 transitions. [2020-10-26 23:28:01,356 INFO L78 Accepts]: Start accepts. Automaton has 3167 states and 3499 transitions. Word has length 630 [2020-10-26 23:28:01,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:01,357 INFO L481 AbstractCegarLoop]: Abstraction has 3167 states and 3499 transitions. [2020-10-26 23:28:01,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:28:01,358 INFO L276 IsEmpty]: Start isEmpty. Operand 3167 states and 3499 transitions. [2020-10-26 23:28:01,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 707 [2020-10-26 23:28:01,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:01,367 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:01,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:28:01,367 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:01,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:01,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1034075144, now seen corresponding path program 1 times [2020-10-26 23:28:01,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:01,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202790151] [2020-10-26 23:28:01,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:01,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:01,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:02,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:03,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:06,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:06,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 728 [2020-10-26 23:28:06,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:28:06,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 23:28:06,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:06,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:06,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:28:06,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:28:06,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:06,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:06,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:06,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:06,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:06,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:06,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:28:06,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:06,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:06,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:06,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:06,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:06,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:06,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:06,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:06,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:06,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:06,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:28:06,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:06,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:06,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:06,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:06,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:06,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:06,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:06,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:06,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:06,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:06,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:28:06,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:06,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:06,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:06,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:06,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:06,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:06,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:06,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:06,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:06,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:06,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:28:06,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:06,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:06,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:06,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:06,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:06,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:06,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:06,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:06,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:28:06,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:06,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 23:28:06,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:06,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:06,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:06,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:28:06,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:06,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:28:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:07,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:07,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:07,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:28:07,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:07,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:28:07,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:07,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:07,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:07,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:28:07,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:07,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-26 23:28:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:07,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:07,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:07,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:28:07,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:07,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:28:07,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:07,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:07,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:28:07,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:07,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:07,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1657 backedges. 647 proven. 72 refuted. 0 times theorem prover too weak. 938 trivial. 0 not checked. [2020-10-26 23:28:07,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202790151] [2020-10-26 23:28:07,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:07,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:28:07,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184013866] [2020-10-26 23:28:07,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:28:07,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:07,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:28:07,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:28:07,387 INFO L87 Difference]: Start difference. First operand 3167 states and 3499 transitions. Second operand 7 states. [2020-10-26 23:28:09,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:09,356 INFO L93 Difference]: Finished difference Result 7278 states and 8258 transitions. [2020-10-26 23:28:09,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:28:09,362 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 706 [2020-10-26 23:28:09,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:09,382 INFO L225 Difference]: With dead ends: 7278 [2020-10-26 23:28:09,382 INFO L226 Difference]: Without dead ends: 4483 [2020-10-26 23:28:09,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:28:09,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4483 states. [2020-10-26 23:28:09,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4483 to 4285. [2020-10-26 23:28:09,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4285 states. [2020-10-26 23:28:09,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4285 states to 4285 states and 4845 transitions. [2020-10-26 23:28:09,520 INFO L78 Accepts]: Start accepts. Automaton has 4285 states and 4845 transitions. Word has length 706 [2020-10-26 23:28:09,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:09,521 INFO L481 AbstractCegarLoop]: Abstraction has 4285 states and 4845 transitions. [2020-10-26 23:28:09,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:28:09,521 INFO L276 IsEmpty]: Start isEmpty. Operand 4285 states and 4845 transitions. [2020-10-26 23:28:09,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 804 [2020-10-26 23:28:09,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:09,534 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:28:09,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:28:09,534 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:09,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:09,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1538786220, now seen corresponding path program 1 times [2020-10-26 23:28:09,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:09,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169720590] [2020-10-26 23:28:09,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:09,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:09,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:10,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:11,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:14,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:14,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 827 [2020-10-26 23:28:14,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:28:14,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 23:28:14,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:14,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:14,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-26 23:28:14,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:28:14,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:14,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:14,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:14,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:14,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:14,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:14,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:28:14,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:14,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:14,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:14,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:14,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:14,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:14,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:14,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:14,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:14,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:14,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:28:14,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:14,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:14,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:14,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:14,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:14,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:14,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:14,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:14,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:14,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:14,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:28:14,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:14,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:14,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:14,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:14,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:14,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:14,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:15,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:15,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:15,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:15,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:28:15,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:15,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:15,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:15,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:28:15,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:15,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:15,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:15,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:15,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:28:15,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:15,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-26 23:28:15,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:15,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:15,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:15,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 23:28:15,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:15,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-26 23:28:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:15,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:15,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:15,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:28:15,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:15,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:28:15,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:15,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:15,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-26 23:28:15,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:15,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:15,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-26 23:28:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:15,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:15,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:15,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:28:15,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:15,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:28:15,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:15,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:15,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:28:15,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:15,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:15,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2020-10-26 23:28:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:15,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:15,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:15,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:28:15,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:15,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:28:15,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:15,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:15,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-26 23:28:15,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:15,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:15,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2176 backedges. 751 proven. 221 refuted. 0 times theorem prover too weak. 1204 trivial. 0 not checked. [2020-10-26 23:28:15,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169720590] [2020-10-26 23:28:15,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:15,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:28:15,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769731398] [2020-10-26 23:28:15,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:28:15,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:15,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:28:15,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:28:15,912 INFO L87 Difference]: Start difference. First operand 4285 states and 4845 transitions. Second operand 8 states. [2020-10-26 23:28:19,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:19,140 INFO L93 Difference]: Finished difference Result 10416 states and 12071 transitions. [2020-10-26 23:28:19,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:28:19,141 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 803 [2020-10-26 23:28:19,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:19,171 INFO L225 Difference]: With dead ends: 10416 [2020-10-26 23:28:19,171 INFO L226 Difference]: Without dead ends: 6503 [2020-10-26 23:28:19,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:28:19,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6503 states. [2020-10-26 23:28:19,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6503 to 6315. [2020-10-26 23:28:19,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6315 states. [2020-10-26 23:28:19,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6315 states to 6315 states and 7168 transitions. [2020-10-26 23:28:19,349 INFO L78 Accepts]: Start accepts. Automaton has 6315 states and 7168 transitions. Word has length 803 [2020-10-26 23:28:19,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:19,350 INFO L481 AbstractCegarLoop]: Abstraction has 6315 states and 7168 transitions. [2020-10-26 23:28:19,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:28:19,350 INFO L276 IsEmpty]: Start isEmpty. Operand 6315 states and 7168 transitions. [2020-10-26 23:28:19,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 872 [2020-10-26 23:28:19,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:19,364 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:19,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:28:19,365 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:19,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:19,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1297570140, now seen corresponding path program 1 times [2020-10-26 23:28:19,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:19,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056763762] [2020-10-26 23:28:19,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:19,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:19,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:20,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:24,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:24,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 895 [2020-10-26 23:28:24,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:28:24,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-26 23:28:24,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:28:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-26 23:28:24,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:24,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:24,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:24,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:24,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:24,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:24,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:28:24,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:24,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:24,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:24,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:24,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:24,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:24,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:24,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:24,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:24,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:24,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:28:24,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:24,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:24,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:24,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:24,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:24,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:24,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:24,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:24,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:24,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:24,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:28:24,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:24,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:24,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:24,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:24,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:24,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:24,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:24,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:24,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:24,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:24,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:28:24,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:24,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:24,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:24,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:24,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:24,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:24,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:25,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:25,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:28:25,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:25,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-26 23:28:25,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:25,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:25,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:25,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:28:25,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:25,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:28:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:25,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:25,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:25,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:28:25,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:25,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-26 23:28:25,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:28:25,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:25,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 665 [2020-10-26 23:28:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:25,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:25,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:25,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:28:25,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:25,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:28:25,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:25,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:25,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:28:25,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:25,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:25,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 738 [2020-10-26 23:28:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:25,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:25,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:25,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:28:25,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:25,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:28:25,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:25,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:25,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-26 23:28:25,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:25,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2370 backedges. 908 proven. 148 refuted. 0 times theorem prover too weak. 1314 trivial. 0 not checked. [2020-10-26 23:28:26,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056763762] [2020-10-26 23:28:26,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:26,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:28:26,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938639239] [2020-10-26 23:28:26,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:28:26,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:26,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:28:26,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:28:26,319 INFO L87 Difference]: Start difference. First operand 6315 states and 7168 transitions. Second operand 8 states. [2020-10-26 23:28:29,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:29,597 INFO L93 Difference]: Finished difference Result 13747 states and 15842 transitions. [2020-10-26 23:28:29,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:28:29,599 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 871 [2020-10-26 23:28:29,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:29,629 INFO L225 Difference]: With dead ends: 13747 [2020-10-26 23:28:29,629 INFO L226 Difference]: Without dead ends: 7804 [2020-10-26 23:28:29,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:28:29,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7804 states. [2020-10-26 23:28:29,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7804 to 7609. [2020-10-26 23:28:29,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7609 states. [2020-10-26 23:28:29,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7609 states to 7609 states and 8628 transitions. [2020-10-26 23:28:29,813 INFO L78 Accepts]: Start accepts. Automaton has 7609 states and 8628 transitions. Word has length 871 [2020-10-26 23:28:29,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:29,814 INFO L481 AbstractCegarLoop]: Abstraction has 7609 states and 8628 transitions. [2020-10-26 23:28:29,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:28:29,814 INFO L276 IsEmpty]: Start isEmpty. Operand 7609 states and 8628 transitions. [2020-10-26 23:28:29,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2020-10-26 23:28:29,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:29,828 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 23:28:29,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:28:29,828 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:29,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:29,829 INFO L82 PathProgramCache]: Analyzing trace with hash -274959760, now seen corresponding path program 1 times [2020-10-26 23:28:29,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:29,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811243144] [2020-10-26 23:28:29,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:30,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:30,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:33,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:33,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:35,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:35,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 906 [2020-10-26 23:28:35,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:28:35,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-26 23:28:35,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:35,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:35,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-26 23:28:35,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:28:35,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:35,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:35,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:35,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:35,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:35,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:35,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:28:35,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:35,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:35,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:35,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:35,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:35,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:35,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:35,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:35,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:35,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:35,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:28:35,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:35,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:35,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:35,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:35,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:35,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:35,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:35,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:35,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:35,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:35,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:28:35,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:35,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:35,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:35,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:35,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:35,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:35,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:35,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:35,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:35,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:35,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-26 23:28:35,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:35,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:35,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:35,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:35,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:35,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:35,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:35,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:35,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:28:35,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:35,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:28:35,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:35,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:35,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:35,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:35,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:35,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:28:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:35,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:35,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:35,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:28:35,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:35,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-26 23:28:35,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:35,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:35,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:35,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-26 23:28:35,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:35,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:28:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:35,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:35,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:35,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:28:35,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:35,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:28:35,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:35,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:35,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:35,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:28:35,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:35,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 749 [2020-10-26 23:28:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:35,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:35,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:35,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:28:35,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:35,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:28:35,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:35,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:35,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-26 23:28:35,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:35,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:36,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2370 backedges. 768 proven. 72 refuted. 0 times theorem prover too weak. 1530 trivial. 0 not checked. [2020-10-26 23:28:36,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811243144] [2020-10-26 23:28:36,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:36,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:28:36,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27933444] [2020-10-26 23:28:36,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:28:36,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:36,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:28:36,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:28:36,356 INFO L87 Difference]: Start difference. First operand 7609 states and 8628 transitions. Second operand 7 states. [2020-10-26 23:28:38,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:38,524 INFO L93 Difference]: Finished difference Result 14854 states and 16889 transitions. [2020-10-26 23:28:38,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:28:38,525 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 882 [2020-10-26 23:28:38,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:38,549 INFO L225 Difference]: With dead ends: 14854 [2020-10-26 23:28:38,549 INFO L226 Difference]: Without dead ends: 7617 [2020-10-26 23:28:38,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:28:38,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7617 states. [2020-10-26 23:28:38,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7617 to 7609. [2020-10-26 23:28:38,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7609 states. [2020-10-26 23:28:38,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7609 states to 7609 states and 8613 transitions. [2020-10-26 23:28:38,725 INFO L78 Accepts]: Start accepts. Automaton has 7609 states and 8613 transitions. Word has length 882 [2020-10-26 23:28:38,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:38,726 INFO L481 AbstractCegarLoop]: Abstraction has 7609 states and 8613 transitions. [2020-10-26 23:28:38,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:28:38,726 INFO L276 IsEmpty]: Start isEmpty. Operand 7609 states and 8613 transitions. [2020-10-26 23:28:38,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2020-10-26 23:28:38,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:38,741 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:28:38,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:28:38,741 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:38,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:38,742 INFO L82 PathProgramCache]: Analyzing trace with hash 145781204, now seen corresponding path program 1 times [2020-10-26 23:28:38,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:38,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644838272] [2020-10-26 23:28:38,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:38,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:39,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:40,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:40,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:44,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:44,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 951 [2020-10-26 23:28:44,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:28:44,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5148 [2020-10-26 23:28:44,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:44,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:28:44,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:28:44,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:28:44,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:44,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:44,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:44,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:44,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:44,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:44,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:28:44,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:44,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:44,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:44,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:44,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:44,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:44,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:44,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:44,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:28:44,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:44,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:44,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:44,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:44,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:44,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:44,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:44,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:44,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:44,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:44,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:28:44,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:44,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:44,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:44,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:44,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:44,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:44,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:44,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:44,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:44,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:44,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:28:44,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:44,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:44,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:44,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:44,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:44,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:44,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:44,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:44,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:28:44,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:44,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:28:44,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:44,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:44,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:44,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:44,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:44,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:28:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:44,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:44,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:44,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:28:44,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:44,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:28:44,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:44,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:44,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:44,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:44,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:44,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:28:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:44,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:44,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:44,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:28:44,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:44,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:28:44,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:28:44,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:44,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:28:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:44,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:44,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:44,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:28:44,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:44,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-26 23:28:44,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:44,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:28:44,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:44,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:28:44,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:44,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-10-26 23:28:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:44,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:44,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:45,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:45,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:28:45,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:28:45,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-26 23:28:45,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:45,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:45,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:45,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:28:45,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:46,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2954 backedges. 1510 proven. 78 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:28:46,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644838272] [2020-10-26 23:28:46,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:46,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:28:46,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831185382] [2020-10-26 23:28:46,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:28:46,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:46,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:28:46,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:28:46,229 INFO L87 Difference]: Start difference. First operand 7609 states and 8613 transitions. Second operand 10 states. [2020-10-26 23:28:48,381 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-26 23:28:49,151 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2020-10-26 23:28:49,681 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-26 23:28:49,950 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-26 23:28:50,603 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-26 23:28:50,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:50,742 INFO L93 Difference]: Finished difference Result 16583 states and 19218 transitions. [2020-10-26 23:28:50,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 23:28:50,744 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 925 [2020-10-26 23:28:50,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:50,773 INFO L225 Difference]: With dead ends: 16583 [2020-10-26 23:28:50,773 INFO L226 Difference]: Without dead ends: 9311 [2020-10-26 23:28:50,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2020-10-26 23:28:50,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9311 states. [2020-10-26 23:28:50,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9311 to 9273. [2020-10-26 23:28:50,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9273 states. [2020-10-26 23:28:51,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9273 states to 9273 states and 10827 transitions. [2020-10-26 23:28:51,002 INFO L78 Accepts]: Start accepts. Automaton has 9273 states and 10827 transitions. Word has length 925 [2020-10-26 23:28:51,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:51,003 INFO L481 AbstractCegarLoop]: Abstraction has 9273 states and 10827 transitions. [2020-10-26 23:28:51,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:28:51,003 INFO L276 IsEmpty]: Start isEmpty. Operand 9273 states and 10827 transitions. [2020-10-26 23:28:51,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2020-10-26 23:28:51,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:51,020 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:28:51,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:28:51,021 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:51,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:51,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1962768484, now seen corresponding path program 1 times [2020-10-26 23:28:51,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:51,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775191018] [2020-10-26 23:28:51,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:51,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:51,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:54,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:54,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:56,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:56,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 984 [2020-10-26 23:28:56,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:28:56,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-26 23:28:56,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:56,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:28:56,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:28:56,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-26 23:28:56,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:56,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:56,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:56,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:56,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:56,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:56,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:28:56,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:56,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:56,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:56,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:56,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:56,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:56,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:56,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:56,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:56,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:56,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:28:56,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:56,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:56,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:56,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:56,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:56,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:56,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:56,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:56,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:56,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:56,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:28:56,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:56,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:56,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:56,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:56,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:56,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:56,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:56,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:56,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:56,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:56,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:28:56,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:56,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:56,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:56,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:56,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:56,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:56,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:56,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:56,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:28:56,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:56,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:28:56,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:56,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:56,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:28:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:56,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:56,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:56,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:28:56,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:56,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:28:56,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:56,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:56,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:56,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:56,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:56,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:28:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:56,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:56,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:56,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:28:56,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:56,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:28:56,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:56,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:28:56,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:56,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:28:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:56,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:57,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:57,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 23:28:57,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:57,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-26 23:28:57,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:28:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-26 23:28:57,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:57,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 825 [2020-10-26 23:28:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:57,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:57,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:57,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:57,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:28:57,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:28:57,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-26 23:28:57,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:57,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:57,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:57,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:28:57,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:57,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2990 backedges. 1618 proven. 6 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:28:57,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775191018] [2020-10-26 23:28:57,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:57,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:28:57,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770452541] [2020-10-26 23:28:57,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:28:57,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:57,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:28:57,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:28:57,974 INFO L87 Difference]: Start difference. First operand 9273 states and 10827 transitions. Second operand 10 states. [2020-10-26 23:29:01,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:01,220 INFO L93 Difference]: Finished difference Result 18217 states and 21377 transitions. [2020-10-26 23:29:01,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 23:29:01,221 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 958 [2020-10-26 23:29:01,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:01,266 INFO L225 Difference]: With dead ends: 18217 [2020-10-26 23:29:01,266 INFO L226 Difference]: Without dead ends: 9283 [2020-10-26 23:29:01,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2020-10-26 23:29:01,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9283 states. [2020-10-26 23:29:01,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9283 to 9275. [2020-10-26 23:29:01,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9275 states. [2020-10-26 23:29:01,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9275 states to 9275 states and 10825 transitions. [2020-10-26 23:29:01,496 INFO L78 Accepts]: Start accepts. Automaton has 9275 states and 10825 transitions. Word has length 958 [2020-10-26 23:29:01,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:01,497 INFO L481 AbstractCegarLoop]: Abstraction has 9275 states and 10825 transitions. [2020-10-26 23:29:01,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:29:01,497 INFO L276 IsEmpty]: Start isEmpty. Operand 9275 states and 10825 transitions. [2020-10-26 23:29:01,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 960 [2020-10-26 23:29:01,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:01,512 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:29:01,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:29:01,512 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:01,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:01,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1710681624, now seen corresponding path program 1 times [2020-10-26 23:29:01,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:01,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522700557] [2020-10-26 23:29:01,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:01,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:01,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:06,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:06,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:06,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:06,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 985 [2020-10-26 23:29:06,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:29:06,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-26 23:29:06,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:06,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:29:06,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:29:06,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-26 23:29:06,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:07,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:07,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:07,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:07,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:07,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:07,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:29:07,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:07,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:07,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:07,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:07,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:07,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:07,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:07,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:07,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:07,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:07,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:29:07,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:07,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:07,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:07,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:07,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:07,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:07,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:07,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:07,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:07,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:07,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:29:07,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:07,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:07,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:07,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:07,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:07,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:07,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:07,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:29:07,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:07,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:07,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:07,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:07,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:07,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:07,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:07,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:07,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:29:07,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:07,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:29:07,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:07,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:07,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:07,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:07,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:07,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:29:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:07,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:07,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:07,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:29:07,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:07,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:29:07,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:07,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:07,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:07,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:07,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:07,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:29:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:07,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:07,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:07,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:29:07,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:07,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:29:07,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:07,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:07,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:07,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:29:07,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:07,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:29:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:07,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:07,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:07,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 23:29:07,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:07,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-26 23:29:07,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:07,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:29:07,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:07,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:29:07,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:07,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 826 [2020-10-26 23:29:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:07,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:07,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:08,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:08,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:29:08,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:08,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-26 23:29:08,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:08,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:08,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:08,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:29:08,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:08,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2991 backedges. 1547 proven. 6 refuted. 0 times theorem prover too weak. 1438 trivial. 0 not checked. [2020-10-26 23:29:08,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522700557] [2020-10-26 23:29:08,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:08,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:29:08,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169077773] [2020-10-26 23:29:08,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:29:08,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:08,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:29:08,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:29:08,710 INFO L87 Difference]: Start difference. First operand 9275 states and 10825 transitions. Second operand 9 states. [2020-10-26 23:29:11,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:11,970 INFO L93 Difference]: Finished difference Result 18252 states and 21418 transitions. [2020-10-26 23:29:11,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 23:29:11,972 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 959 [2020-10-26 23:29:11,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:11,999 INFO L225 Difference]: With dead ends: 18252 [2020-10-26 23:29:11,999 INFO L226 Difference]: Without dead ends: 9281 [2020-10-26 23:29:12,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-26 23:29:12,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9281 states. [2020-10-26 23:29:12,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9281 to 9273. [2020-10-26 23:29:12,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9273 states. [2020-10-26 23:29:12,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9273 states to 9273 states and 10788 transitions. [2020-10-26 23:29:12,208 INFO L78 Accepts]: Start accepts. Automaton has 9273 states and 10788 transitions. Word has length 959 [2020-10-26 23:29:12,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:12,209 INFO L481 AbstractCegarLoop]: Abstraction has 9273 states and 10788 transitions. [2020-10-26 23:29:12,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:29:12,209 INFO L276 IsEmpty]: Start isEmpty. Operand 9273 states and 10788 transitions. [2020-10-26 23:29:12,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2020-10-26 23:29:12,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:12,227 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:12,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:29:12,227 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:12,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:12,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1059147812, now seen corresponding path program 1 times [2020-10-26 23:29:12,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:12,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040653802] [2020-10-26 23:29:12,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:12,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:13,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:13,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:16,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1016 [2020-10-26 23:29:16,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:29:16,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4288 [2020-10-26 23:29:16,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:29:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:29:16,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-26 23:29:16,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:16,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:16,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:16,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:16,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:16,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:29:16,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:16,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:16,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:16,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:16,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:16,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:16,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:16,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:16,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:16,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:29:16,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:16,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:16,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:16,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:16,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:16,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:16,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:16,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:16,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:16,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:29:16,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:16,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:16,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:16,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:16,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:17,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:17,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:17,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:17,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:17,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:17,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-26 23:29:17,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:17,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:17,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:17,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:17,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:17,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:17,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:17,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:17,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:29:17,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:17,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:29:17,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:17,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:17,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:17,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:17,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:17,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:29:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:17,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:17,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:17,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:29:17,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:17,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:29:17,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:17,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:17,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:17,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:17,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:17,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:29:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:17,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:17,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:17,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:29:17,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:17,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:29:17,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:17,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:17,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:17,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:29:17,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:17,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:29:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:17,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:17,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:17,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:29:17,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:17,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-26 23:29:17,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:17,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:29:17,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:17,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:29:17,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:17,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:29:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:17,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:17,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:17,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:29:17,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:17,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:29:17,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:17,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:17,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:17,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:29:17,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:18,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3020 backedges. 1576 proven. 78 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:29:18,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040653802] [2020-10-26 23:29:18,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:18,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:29:18,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899719259] [2020-10-26 23:29:18,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:29:18,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:18,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:29:18,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:29:18,448 INFO L87 Difference]: Start difference. First operand 9273 states and 10788 transitions. Second operand 10 states. [2020-10-26 23:29:22,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:22,592 INFO L93 Difference]: Finished difference Result 18730 states and 21917 transitions. [2020-10-26 23:29:22,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:29:22,594 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 990 [2020-10-26 23:29:22,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:22,624 INFO L225 Difference]: With dead ends: 18730 [2020-10-26 23:29:22,624 INFO L226 Difference]: Without dead ends: 9829 [2020-10-26 23:29:22,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-10-26 23:29:22,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9829 states. [2020-10-26 23:29:22,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9829 to 9823. [2020-10-26 23:29:22,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9823 states. [2020-10-26 23:29:22,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9823 states to 9823 states and 11372 transitions. [2020-10-26 23:29:22,834 INFO L78 Accepts]: Start accepts. Automaton has 9823 states and 11372 transitions. Word has length 990 [2020-10-26 23:29:22,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:22,835 INFO L481 AbstractCegarLoop]: Abstraction has 9823 states and 11372 transitions. [2020-10-26 23:29:22,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:29:22,835 INFO L276 IsEmpty]: Start isEmpty. Operand 9823 states and 11372 transitions. [2020-10-26 23:29:22,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1045 [2020-10-26 23:29:22,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:22,856 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:22,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:29:22,856 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:22,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:22,857 INFO L82 PathProgramCache]: Analyzing trace with hash -127071872, now seen corresponding path program 1 times [2020-10-26 23:29:22,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:22,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811472972] [2020-10-26 23:29:22,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:23,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:23,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:28,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:28,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1070 [2020-10-26 23:29:28,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:28,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-26 23:29:28,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:28,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:29:28,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:29:28,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:29:28,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:28,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:28,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:28,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:28,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:28,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:28,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:29:28,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:28,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:28,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:28,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:28,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:28,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:28,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:28,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:29:28,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:28,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:28,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:28,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:28,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:28,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:28,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:28,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:28,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:28,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:28,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:29:28,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:28,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:28,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:28,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:28,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:28,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:28,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:28,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:28,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:28,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:28,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:29:28,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:28,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:28,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:28,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:28,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:28,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:28,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:28,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:28,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:29:28,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:28,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:29:28,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:28,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:28,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:28,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:28,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:28,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:29:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:28,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:28,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:28,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:29:28,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:28,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:29:28,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:28,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:28,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:28,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:28,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:28,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:29:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:28,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:29,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:29,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:29:29,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:29,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-26 23:29:29,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:29:29,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:29,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:29:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:29,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:29,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:29,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:29:29,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:29,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-26 23:29:29,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:29,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:29:29,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:29,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:29:29,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:29,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 911 [2020-10-26 23:29:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:29,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:29,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:29,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:29,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:29:29,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:29,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 23:29:29,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:29,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:29,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:29,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:29:29,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:30,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3233 backedges. 1369 proven. 50 refuted. 0 times theorem prover too weak. 1814 trivial. 0 not checked. [2020-10-26 23:29:30,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811472972] [2020-10-26 23:29:30,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:30,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:29:30,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635738514] [2020-10-26 23:29:30,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:29:30,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:30,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:29:30,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:29:30,441 INFO L87 Difference]: Start difference. First operand 9823 states and 11372 transitions. Second operand 10 states. [2020-10-26 23:29:32,279 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2020-10-26 23:29:34,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:34,280 INFO L93 Difference]: Finished difference Result 19531 states and 22698 transitions. [2020-10-26 23:29:34,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:29:34,281 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1044 [2020-10-26 23:29:34,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:34,311 INFO L225 Difference]: With dead ends: 19531 [2020-10-26 23:29:34,311 INFO L226 Difference]: Without dead ends: 10045 [2020-10-26 23:29:34,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-10-26 23:29:34,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10045 states. [2020-10-26 23:29:34,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10045 to 10005. [2020-10-26 23:29:34,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10005 states. [2020-10-26 23:29:34,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10005 states to 10005 states and 11560 transitions. [2020-10-26 23:29:34,615 INFO L78 Accepts]: Start accepts. Automaton has 10005 states and 11560 transitions. Word has length 1044 [2020-10-26 23:29:34,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:34,616 INFO L481 AbstractCegarLoop]: Abstraction has 10005 states and 11560 transitions. [2020-10-26 23:29:34,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:29:34,616 INFO L276 IsEmpty]: Start isEmpty. Operand 10005 states and 11560 transitions. [2020-10-26 23:29:34,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1081 [2020-10-26 23:29:34,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:34,636 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:34,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:29:34,636 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:34,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:34,637 INFO L82 PathProgramCache]: Analyzing trace with hash -201071304, now seen corresponding path program 1 times [2020-10-26 23:29:34,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:34,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60215031] [2020-10-26 23:29:34,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:34,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:35,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:35,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:35,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:36,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:39,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:39,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1108 [2020-10-26 23:29:39,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:29:39,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-26 23:29:39,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:39,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:39,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-26 23:29:39,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-26 23:29:39,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:40,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:29:40,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:40,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:40,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:40,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:40,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:29:40,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:40,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:40,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:29:40,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:40,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:40,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:29:40,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:40,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:40,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:40,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:29:40,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:29:40,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:40,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:40,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:40,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:29:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:29:40,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-26 23:29:40,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:40,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:40,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-26 23:29:40,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:29:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:40,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-26 23:29:40,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:40,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:40,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:29:40,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 793 [2020-10-26 23:29:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:29:40,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:29:40,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:40,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-26 23:29:40,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:40,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 874 [2020-10-26 23:29:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:29:40,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:29:40,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:40,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:29:40,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:40,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 947 [2020-10-26 23:29:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:29:40,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:29:40,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:40,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-26 23:29:40,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:40,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:41,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3838 backedges. 1121 proven. 226 refuted. 0 times theorem prover too weak. 2491 trivial. 0 not checked. [2020-10-26 23:29:41,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60215031] [2020-10-26 23:29:41,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:41,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:29:41,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590688055] [2020-10-26 23:29:41,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:29:41,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:41,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:29:41,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:29:41,381 INFO L87 Difference]: Start difference. First operand 10005 states and 11560 transitions. Second operand 7 states. [2020-10-26 23:29:44,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:44,056 INFO L93 Difference]: Finished difference Result 20398 states and 23782 transitions. [2020-10-26 23:29:44,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:29:44,057 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1080 [2020-10-26 23:29:44,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:44,094 INFO L225 Difference]: With dead ends: 20398 [2020-10-26 23:29:44,094 INFO L226 Difference]: Without dead ends: 10765 [2020-10-26 23:29:44,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:29:44,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10765 states. [2020-10-26 23:29:44,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10765 to 10743. [2020-10-26 23:29:44,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10743 states. [2020-10-26 23:29:44,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10743 states to 10743 states and 12462 transitions. [2020-10-26 23:29:44,354 INFO L78 Accepts]: Start accepts. Automaton has 10743 states and 12462 transitions. Word has length 1080 [2020-10-26 23:29:44,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:44,355 INFO L481 AbstractCegarLoop]: Abstraction has 10743 states and 12462 transitions. [2020-10-26 23:29:44,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:29:44,355 INFO L276 IsEmpty]: Start isEmpty. Operand 10743 states and 12462 transitions. [2020-10-26 23:29:44,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1083 [2020-10-26 23:29:44,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:44,374 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 8, 8, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:29:44,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:29:44,374 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:44,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:44,375 INFO L82 PathProgramCache]: Analyzing trace with hash 601555792, now seen corresponding path program 1 times [2020-10-26 23:29:44,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:44,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166232847] [2020-10-26 23:29:44,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:44,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:44,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:44,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:45,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:46,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:49,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:49,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1112 [2020-10-26 23:29:49,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:29:49,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-26 23:29:49,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:49,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:29:49,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:29:49,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-26 23:29:49,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:49,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:49,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:49,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:49,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:49,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:49,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:29:49,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:49,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:49,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:49,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:49,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:49,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:49,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:49,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:49,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:49,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:49,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:29:49,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:49,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:49,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:49,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:49,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:49,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:49,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:49,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:49,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:49,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:49,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:29:49,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:49,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:49,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:49,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:49,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:49,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:49,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:49,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:49,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:49,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:49,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:29:49,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:49,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:49,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:49,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:49,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:49,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:29:49,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:49,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:29:49,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:49,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:49,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:49,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:49,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:49,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:29:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:49,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:50,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:50,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:29:50,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:50,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:29:50,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:50,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:50,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:50,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:50,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:50,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:29:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:50,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:50,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:50,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:29:50,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:50,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:29:50,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:50,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:50,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:50,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:29:50,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:50,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:29:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:50,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:50,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:50,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:50,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:50,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:50,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-26 23:29:50,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:50,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:50,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:50,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:29:50,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:50,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 795 [2020-10-26 23:29:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:50,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:50,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:50,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:29:50,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:50,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:29:50,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:50,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:50,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:50,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:29:50,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:50,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 876 [2020-10-26 23:29:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:50,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:50,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:50,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:29:50,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:50,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:29:50,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:50,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:50,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:29:50,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:50,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:50,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 949 [2020-10-26 23:29:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:50,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:50,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:50,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:29:50,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:50,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:29:50,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:50,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:50,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-26 23:29:50,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:50,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:51,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4366 backedges. 1686 proven. 294 refuted. 0 times theorem prover too weak. 2386 trivial. 0 not checked. [2020-10-26 23:29:51,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166232847] [2020-10-26 23:29:51,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:51,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:29:51,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443808977] [2020-10-26 23:29:51,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:29:51,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:51,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:29:51,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:29:51,226 INFO L87 Difference]: Start difference. First operand 10743 states and 12462 transitions. Second operand 7 states. [2020-10-26 23:29:54,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:54,679 INFO L93 Difference]: Finished difference Result 22228 states and 25982 transitions. [2020-10-26 23:29:54,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:29:54,680 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1082 [2020-10-26 23:29:54,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:54,715 INFO L225 Difference]: With dead ends: 22228 [2020-10-26 23:29:54,715 INFO L226 Difference]: Without dead ends: 11857 [2020-10-26 23:29:54,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:29:54,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11857 states. [2020-10-26 23:29:54,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11857 to 11851. [2020-10-26 23:29:54,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11851 states. [2020-10-26 23:29:54,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11851 states to 11851 states and 13759 transitions. [2020-10-26 23:29:54,987 INFO L78 Accepts]: Start accepts. Automaton has 11851 states and 13759 transitions. Word has length 1082 [2020-10-26 23:29:54,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:54,988 INFO L481 AbstractCegarLoop]: Abstraction has 11851 states and 13759 transitions. [2020-10-26 23:29:54,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:29:54,988 INFO L276 IsEmpty]: Start isEmpty. Operand 11851 states and 13759 transitions. [2020-10-26 23:29:55,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1113 [2020-10-26 23:29:55,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:55,008 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:55,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 23:29:55,008 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:55,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:55,009 INFO L82 PathProgramCache]: Analyzing trace with hash -35617172, now seen corresponding path program 1 times [2020-10-26 23:29:55,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:55,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267369040] [2020-10-26 23:29:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:55,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:55,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:56,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:00,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:00,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1140 [2020-10-26 23:30:00,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:30:00,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-26 23:30:00,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:00,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 23:30:00,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:30:00,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 387 [2020-10-26 23:30:00,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:00,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:00,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:00,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:00,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:00,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:00,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:30:00,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:00,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:00,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:00,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:00,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:00,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:00,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:00,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:00,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:00,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:00,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:30:00,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:00,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:00,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:00,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:00,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:00,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:00,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:00,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-26 23:30:00,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:00,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:00,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:00,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:00,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:00,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:00,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:00,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:00,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:30:00,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:00,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:30:00,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:00,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:00,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:00,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:00,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:00,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:30:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:00,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:00,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:00,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:30:00,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:00,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:30:00,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:00,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:00,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:00,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:00,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:00,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:30:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:00,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:00,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:00,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:30:00,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:00,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:30:00,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:00,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:00,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:30:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:00,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:00,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:00,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:30:00,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:00,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:30:00,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:00,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:00,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:00,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:30:00,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:00,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:30:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:00,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:01,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:01,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:30:01,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:01,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-26 23:30:01,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:01,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:30:01,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:01,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:30:01,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:01,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:30:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:01,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:01,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:01,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:30:01,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:01,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:30:01,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-26 23:30:01,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:01,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-26 23:30:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:01,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:01,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:01,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:30:01,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:01,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:30:01,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:01,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:01,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:01,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:30:01,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:03,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3908 backedges. 2255 proven. 275 refuted. 0 times theorem prover too weak. 1378 trivial. 0 not checked. [2020-10-26 23:30:03,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267369040] [2020-10-26 23:30:03,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:03,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:30:03,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12829395] [2020-10-26 23:30:03,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:30:03,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:03,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:30:03,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:30:03,134 INFO L87 Difference]: Start difference. First operand 11851 states and 13759 transitions. Second operand 11 states. [2020-10-26 23:30:07,350 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-26 23:30:08,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:08,102 INFO L93 Difference]: Finished difference Result 23528 states and 27350 transitions. [2020-10-26 23:30:08,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-26 23:30:08,103 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1112 [2020-10-26 23:30:08,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:08,132 INFO L225 Difference]: With dead ends: 23528 [2020-10-26 23:30:08,133 INFO L226 Difference]: Without dead ends: 12049 [2020-10-26 23:30:08,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2020-10-26 23:30:08,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12049 states. [2020-10-26 23:30:08,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12049 to 12043. [2020-10-26 23:30:08,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12043 states. [2020-10-26 23:30:08,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12043 states to 12043 states and 13950 transitions. [2020-10-26 23:30:08,387 INFO L78 Accepts]: Start accepts. Automaton has 12043 states and 13950 transitions. Word has length 1112 [2020-10-26 23:30:08,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:08,388 INFO L481 AbstractCegarLoop]: Abstraction has 12043 states and 13950 transitions. [2020-10-26 23:30:08,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:30:08,388 INFO L276 IsEmpty]: Start isEmpty. Operand 12043 states and 13950 transitions. [2020-10-26 23:30:08,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1151 [2020-10-26 23:30:08,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:08,409 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:08,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 23:30:08,409 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:08,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:08,410 INFO L82 PathProgramCache]: Analyzing trace with hash -731676460, now seen corresponding path program 1 times [2020-10-26 23:30:08,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:08,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704050762] [2020-10-26 23:30:08,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:08,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:09,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:11,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:13,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:13,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1176 [2020-10-26 23:30:13,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:30:13,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-26 23:30:13,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:13,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:30:13,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:30:13,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-26 23:30:13,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:13,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:13,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:13,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:13,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:13,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:13,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:30:13,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:13,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:13,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:13,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:13,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:13,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:14,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:14,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:14,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:14,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:14,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:30:14,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:14,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:14,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:14,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:14,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:14,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:14,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:14,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:14,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:14,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:14,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:30:14,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:14,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:14,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:14,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:14,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:14,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:30:14,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:14,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:30:14,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:14,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:14,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:14,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:14,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:14,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:30:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:14,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:14,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:14,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:30:14,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:14,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:30:14,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:14,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:14,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:14,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:14,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:14,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:30:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:14,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:14,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:14,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:30:14,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:14,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 23:30:14,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:14,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:14,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:14,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:14,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:14,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:30:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:14,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:14,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:14,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:30:14,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:14,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 23:30:14,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:14,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:14,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:14,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:30:14,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:14,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:30:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:14,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:14,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:14,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:14,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:30:14,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:14,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-26 23:30:14,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:14,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:30:14,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:14,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:30:14,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:15,702 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 48 [2020-10-26 23:30:15,929 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2020-10-26 23:30:16,170 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2020-10-26 23:30:16,443 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2020-10-26 23:30:16,724 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-10-26 23:30:17,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1017 [2020-10-26 23:30:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:17,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:17,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:17,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:30:17,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:17,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:30:17,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:17,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:17,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-26 23:30:17,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:17,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0